DO NOT READ THIS FILE ON GITHUB, GUIDES ARE PUBLISHED ON https://guides.rubyonrails.org.
Ruby on Rails
5.0 Release Notes
Highlights in Rails
5.0:
- Action Cable
Rails
API- Active Record Attributes API
- Test Runner
- Exclusive use of
rails
CLI over Rake - Sprockets 3
- Turbolinks 5
- Ruby 2.2.2+ required
These release notes cover only the major changes. To learn about various bug
fixes and changes, please refer to the changelogs or check out the list of
commits in the main Rails
repository on GitHub.
Upgrading to Rails
5.0
If you're upgrading an existing application, it's a great idea to have good test
coverage before going in. You should also first upgrade to Rails
4.2 in case you
haven't and make sure your application still runs as expected before attempting
an update to Rails
5.0. A list of things to watch out for when upgrading is
available in the
Upgrading Ruby on Rails
guide.
Major Features
Action Cable
Action Cable is a new framework in Rails
5. It seamlessly integrates
WebSockets with the rest of your
Rails
application.
Action Cable allows for real-time features to be written in Ruby in the
same style and form as the rest of your Rails
application, while still being
performant and scalable. It's a full-stack offering that provides both a
client-side JavaScript framework and a server-side Ruby framework. You have
access to your full domain model written with Active Record or your ORM of
choice.
See the Action Cable Overview guide for more information.
API Applications
Rails
can now be used to create slimmed down API only applications.
This is useful for creating and serving APIs similar to Twitter or GitHub API,
that can be used to serve public-facing, as well as, for custom applications.
You can generate a new api Rails
app using:
$ rails new my_api --api
This will do three main things:
- Configure your application to start with a more limited set of middleware than normal. Specifically, it will not include any middleware primarily useful for browser applications (like cookies support) by default.
- Make
ApplicationController
inherit from::ActionController::API
instead of::ActionController::Base
. As with middleware, this will leave out any Action Controller modules that provide functionalities primarily used by browser applications. - Configure the generators to skip generating views, helpers, and assets when you generate a new resource.
The application provides a base for APIs, that can then be configured to pull in functionality as suitable for the application's needs.
See the Using Rails for API-only Applications guide for more information.
Active Record attributes API
Defines an attribute with a type on a model. It will override the type of existing attributes if needed.
This allows control over how values are converted to and from SQL when assigned to a model.
It also changes the behavior of values passed to ActiveRecord::Base.where
, which let's use our domain objects across much of Active Record,
without having to rely on implementation details or monkey patching.
Some things that you can achieve with this:
- The type detected by Active Record can be overridden.
- A default can also be provided.
- Attributes do not need to be backed by a database column.
# db/schema.rb
create_table :store_listings, force: true do |t|
t.decimal :price_in_cents
t.string :my_string, default: "original default"
end
# app/models/store_listing.rb
class StoreListing < ActiveRecord::Base
end
store_listing = StoreListing.new(price_in_cents: '10.1')
# before
store_listing.price_in_cents # => BigDecimal.new(10.1)
StoreListing.new.my_string # => "original default"
class StoreListing < ActiveRecord::Base
attribute :price_in_cents, :integer # custom type
attribute :my_string, :string, default: "new default" # default value
attribute :my_default_proc, :datetime, default: -> { Time.now } # default value
attribute :field_without_db_column, :integer, array: true
end
# after
store_listing.price_in_cents # => 10
StoreListing.new.my_string # => "new default"
StoreListing.new.my_default_proc # => 2015-05-30 11:04:48 -0600
model = StoreListing.new(field_without_db_column: ["1", "2", "3"])
model.attributes # => {field_without_db_column: [1, 2, 3]}
Creating Custom Types:
You can define your own custom types, as long as they respond
to the methods defined on the value type. The method deserialize
or
cast
will be called on your type object, with raw input from the
database or from your controllers. This is useful, for example, when doing custom conversion,
like Money data.
Querying:
When ActiveRecord::Base.where
is called, it will
use the type defined by the model class to convert the value to SQL,
calling serialize
on your type object.
This gives the objects ability to specify, how to convert values when performing SQL queries.
Dirty Tracking:
The type of an attribute is allowed to change how dirty tracking is performed.
See its documentation for a detailed write up.
Test Runner
A new test runner has been introduced to enhance the capabilities of running tests from Rails.
To use this test runner simply type bin/rails test
.
Test Runner is inspired by RSpec
, minitest-reporters
, maxitest
and others.
It includes some of these notable advancements:
- Run a single test using line number of test.
- Run multiple tests pinpointing to line number of tests.
- Improved failure messages, which also add ease of re-running failed tests.
- Fail fast using
-f
option, to stop tests immediately on occurrence of failure, instead of waiting for the suite to complete. - Defer test output until the end of a full test run using the
-d
option. - Complete exception backtrace output using
-b
option. - Integration with minitest to allow options like
-s
for test seed data,-n
for running specific test by name,-v
for better verbose output and so forth. - Colored test output.
Railties
Please refer to the Changelog for detailed changes.
Removals
Removed debugger support, use byebug instead.
debugger
is not supported by Ruby 2.2. (commit)Removed deprecated
test:all
andtest:all:db
tasks. (commit)Removed deprecated
Rails::Rack::LogTailer
. (commit)Removed deprecated
RAILS_CACHE
constant. (commit)Removed deprecated
serve_static_assets
configuration. (commit)Removed the documentation tasks
doc:app
,doc:rails
, anddoc:guides
. (commit)Removed
Rack::ContentLength
middleware from the default stack. (Commit)
Deprecations
Deprecated
config.static_cache_control
in favor ofconfig.public_file_server.headers
. (Pull Request)Deprecated
config.serve_static_files
in favor ofconfig.public_file_server.enabled
. (Pull Request)Deprecated the tasks in the
rails
task namespace in favor of theapp
namespace. (e.g.rails:update
andrails:template
tasks are renamed toapp:update
andapp:template
.) (Pull Request)
Notable changes
Added Rails test runner
bin/rails test
. (Pull Request)Newly generated applications and plugins get a
README.md
in Markdown. (commit, Pull Request)Added
bin/rails restart
task to restart your Rails app by touchingtmp/restart.txt
. (Pull Request)Added
bin/rails initializers
task to print out all defined initializers in the order they are invoked by Rails. (Pull Request)Added
bin/rails dev:cache
to enable or disable caching in development mode. (Pull Request)Added
bin/update
script to update the development environment automatically. (Pull Request)Proxy Rake tasks through
bin/rails
. (Pull Request, Pull Request)New applications are generated with the evented file system monitor enabled on Linux and macOS. The feature can be opted out by passing
--skip-listen
to the generator. (commit, commit)Generate applications with an option to log to STDOUT in production using the environment variable
RAILS_LOG_TO_STDOUT
. (Pull Request)Enable HSTS with IncludeSubdomains header for new applications. (Pull Request)
The application generator writes a new file
config/spring.rb
, which tells Spring to watch additional common files. (commit)Added
--skip-action-mailer
to skip Action Mailer while generating new app. (Pull Request)Removed
tmp/sessions
directory and the clear rake task associated with it. (Pull Request)Changed
_form.html.erb
generated by scaffold generator to use local variables. (Pull Request)Disabled autoloading of classes in production environment. (commit)
Action Pack
Please refer to the Changelog for detailed changes.
Removals
Removed
ActionDispatch::Request::Utils.deep_munge
. (commit)Removed
ActionController::HideActions
. (Pull Request)Removed
respond_to
andrespond_with
placeholder methods, this functionality has been extracted to the responders gem. (commit)Removed deprecated assertion files. (commit)
Removed deprecated usage of string keys in URL helpers. (commit)
Removed deprecated
only_path
option on*_path
helpers. (commit)Removed deprecated
NamedRouteCollection#helpers
. (commit)Removed deprecated support to define routes with
:to
option that doesn't contain#
. (commit)Removed deprecated
ActionDispatch::Response#to_ary
. (commit)Removed deprecated
ActionDispatch::Request#deep_munge
. (commit)Removed deprecated
ActionDispatch::Http::Parameters#symbolized_path_parameters
. (commit)Removed deprecated option
use_route
in controller tests. (commit)Removed
assigns
andassert_template
. Both methods have been extracted into the rails-controller-testing gem. (Pull Request)
Deprecations
Deprecated all
*_filter
callbacks in favor of*_action
callbacks. (Pull Request)Deprecated
*_via_redirect
integration test methods. Usefollow_redirect!
manually after the request call for the same behavior. (Pull Request)Deprecated
AbstractController#skip_action_callback
in favor of individual skip_callback methods. (Pull Request)Deprecated
:nothing
option forrender
method. (Pull Request)Deprecated passing first parameter as
Hash
and default status code forhead
method. (Pull Request)Deprecated using strings or symbols for middleware class names. Use class names instead. (commit)
Deprecated accessing MIME types via constants (e.g.
Mime::HTML
). Use the subscript operator with a symbol instead (e.g.Mime[:html]
). (Pull Request)Deprecated
redirect_to :back
in favor ofredirect_back
, which accepts a requiredfallback_location
argument, thus eliminating the possibility of aRedirectBackError
. (Pull Request)::ActionDispatch::IntegrationTest
and::ActionController::TestCase
deprecate positional arguments in favor of keyword arguments. (Pull Request)Deprecated
:controller
and:action
path parameters. (Pull Request)Deprecated env method on controller instances. (commit)
ActionDispatch::ParamsParser
is deprecated and was removed from the middleware stack. To configure the parameter parsers useActionDispatch::Request.parameter_parsers=
. (commit, commit)
Notable changes
Added
::ActionController::Renderer
to render arbitrary templates outside controller actions. (Pull Request)Migrating to keyword arguments syntax in
::ActionController::TestCase
and::ActionDispatch::Integration
HTTP request methods. (Pull Request)Added
http_cache_forever
to Action Controller, so we can cache a response that never gets expired. (Pull Request)Provide friendlier access to request variants. (Pull Request)
For actions with no corresponding templates, render
head :no_content
instead of raising an error. (Pull Request)Added the ability to override default form builder for a controller. (Pull Request)
Added support for API-only apps.
::ActionController::API
is added as a replacement of::ActionController::Base
for this kind of applications. (Pull Request)Make
::ActionController::Parameters
no longer inherits from HashWithIndifferentAccess. (Pull Request)Make it easier to opt in to
config.force_ssl
andconfig.ssl_options
by making them less dangerous to try and easier to disable. (Pull Request)Added the ability of returning arbitrary headers to
::ActionDispatch::Static
. (Pull Request)Changed the
protect_from_forgery
prepend default tofalse
. (commit)::ActionController::TestCase
will be moved to its own gem in Rails 5.1. Use::ActionDispatch::IntegrationTest
instead. (commit)Rails generates weak ETags by default. (Pull Request)
Controller actions without an explicit
render
call and with no corresponding templates will renderhead :no_content
implicitly instead of raising an error. (Pull Request 1, 2)Added an option for per-form CSRF tokens. (Pull Request)
Added request encoding and response parsing to integration tests. (Pull Request)
Add
ActionController#helpers
to get access to the view context at the controller level. (Pull Request)Discarded flash messages get removed before storing into session. (Pull Request)
Added support for passing collection of records to
fresh_when
andstale?
. (Pull Request)::ActionController::Live
became an::ActiveSupport::Concern
. That means it can't be just included in other modules without extending them with::ActiveSupport::Concern
or::ActionController::Live
won't take effect in production. Some people may be using another module to include some specialWarden
/Devise
authentication failure handling code as well since the middleware can't catch a:warden
thrown by a spawned thread which is the case when using::ActionController::Live
. (More details in this issue)Introduce
Response#strong_etag=
and#weak_etag=
and analogous options forfresh_when
andstale?
. (Pull Request)
Action View
Please refer to the Changelog for detailed changes.
Removals
Removed deprecated
AbstractController::Base::parent_prefixes
. (commit)Removed
ActionView::Helpers::RecordTagHelper
, this functionality has been extracted to the record_tag_helper gem. (Pull Request)Removed
:rescue_format
option fortranslate
helper since it's no longer supported by I18n. (Pull Request)
Notable Changes
Changed the default template handler from
ERB
toRaw
. (commit)Collection rendering can cache and fetches multiple partials at once. (Pull Request, commit)
Added wildcard matching to explicit dependencies. (Pull Request)
Make
disable_with
the default behavior for submit tags. Disables the button on submit to prevent double submits. (Pull Request)Partial template name no longer has to be a valid Ruby identifier. (commit)
The
datetime_tag
helper now generates an input tag with the type ofdatetime-local
. (Pull Request)Allow blocks while rendering with the
render partial:
helper. (Pull Request)
Action Mailer
Please refer to the Changelog for detailed changes.
Removals
Removed deprecated
*_path
helpers in email views. (commit)Removed deprecated
deliver
anddeliver!
methods. (commit)
Notable changes
Template lookup now respects default locale and I18n fallbacks. (commit)
Added
_mailer
suffix to mailers created via generator, following the same naming convention used in controllers and jobs. (Pull Request)Added
assert_enqueued_emails
andassert_no_enqueued_emails
. (Pull Request)Added
config.action_mailer.deliver_later_queue_name
configuration to set the mailer queue name. (Pull Request)Added support for fragment caching in Action Mailer views. Added new config option
config.action_mailer.perform_caching
to determine whether your templates should perform caching or not. (Pull Request)
Active Record
Please refer to the Changelog for detailed changes.
Removals
Removed deprecated behavior allowing nested arrays to be passed as query values. (Pull Request)
Removed deprecated ActiveRecord::Tasks::DatabaseTasks#load_schema. This method was replaced by
ActiveRecord::Tasks::DatabaseTasks#load_schema_for
. (commit)Removed deprecated
serialized_attributes
. (commit)Removed deprecated automatic counter caches on
has_many :through
. (commit)Removed deprecated
sanitize_sql_hash_for_conditions
. (commit)Removed deprecated
Reflection#source_macro
. (commit)Removed deprecated
symbolized_base_class
andsymbolized_sti_name
. (commit)Removed deprecated
ActiveRecord::Base.disable_implicit_join_references=
. (commit)Removed deprecated access to connection specification using a string accessor. (commit)
Removed deprecated support to preload instance-dependent associations. (commit)
Removed deprecated support for PostgreSQL ranges with exclusive lower bounds. (commit)
Removed deprecation when modifying a relation with cached Arel. This raises an
ImmutableRelation
error instead. (commit)Removed
ActiveRecord::Serialization::XmlSerializer
from core. This feature has been extracted into the activemodel-serializers-xml gem. (Pull Request)Removed support for the legacy
mysql
database adapter from core. Most users should be able to usemysql2
. It will be converted to a separate gem when we find someone to maintain it. (Pull Request 1, Pull Request 2)Removed support for the
protected_attributes
gem. (commit)Removed support for PostgreSQL versions below 9.1. (Pull Request)
Removed support for
activerecord-deprecated_finders
gem. (commit)Removed
ActiveRecord::ConnectionAdapters::Column::TRUE_VALUES
constant. (commit)
Deprecations
Deprecated passing a class as a value in a query. Users should pass strings instead. (Pull Request)
Deprecated returning
false
as a way to halt Active Record callback chains. The recommended way is tothrow(:abort)
. (Pull Request)Deprecated
ActiveRecord::Base.errors_in_transactional_callbacks=
. (commit)Deprecated
Relation#uniq
useRelation#distinct
instead. (commit)Deprecated the PostgreSQL
:point
type in favor of a new one which will returnPoint
objects instead of anArray
(Pull Request)Deprecated force association reload by passing a truthy argument to association method. (Pull Request)
Deprecated the keys for association
restrict_dependent_destroy
errors in favor of new key names. (Pull Request)Synchronize behavior of
#tables
. (Pull Request)Deprecated
SchemaCache#tables
,SchemaCache#table_exists?
andSchemaCache#clear_table_cache!
in favor of their new data source counterparts. (Pull Request)Deprecated
connection.tables
on the SQLite3 and MySQL adapters. (Pull Request)Deprecated passing arguments to
#tables
- the#tables
method of some adapters (mysql2, sqlite3) would return both tables and views while others (postgresql) just return tables. To make their behavior consistent,#tables
will return only tables in the future. (Pull Request)Deprecated
table_exists?
- The#table_exists?
method would check both tables and views. To make their behavior consistent with#tables
,#table_exists?
will check only tables in the future. (Pull Request)Deprecate sending the
offset
argument tofind_nth
. Please use theoffset
method on relation instead. (Pull Request)Deprecated
{insert|update|delete}_sql
inDatabaseStatements
. Use the{insert|update|delete}
public methods instead. (Pull Request)Deprecated
use_transactional_fixtures
in favor ofuse_transactional_tests
for more clarity. (Pull Request)Deprecated passing a column to
ActiveRecord::Connection#quote
. (commit)Added an option
end
tofind_in_batches
that complements thestart
parameter to specify where to stop batch processing. (Pull Request)
Notable changes
Added a
foreign_key
option toreferences
while creating the table. (commit)New attributes API. (commit)
Added
:_prefix
/:_suffix
option toenum
definition. (Pull Request, Pull Request)Added
#cache_key
to::ActiveRecord::Relation
. (Pull Request)Changed the default
null
value fortimestamps
tofalse
. (commit)Added
::ActiveRecord::SecureToken
in order to encapsulate generation of unique tokens for attributes in a model usingSecureRandom
. (Pull Request)Added
:if_exists
option fordrop_table
. (Pull Request)Added
ActiveRecord::Base#accessed_fields
, which can be used to quickly discover which fields were read from a model when you are looking to only select the data you need from the database. (commit)Added the
#or
method on::ActiveRecord::Relation
, allowing use of the OR operator to combine WHERE or HAVING clauses. (commit)Added
ActiveRecord::Base.suppress
to prevent the receiver from being saved during the given block. (Pull Request)belongs_to
will now trigger a validation error by default if the association is not present. You can turn this off on a per-association basis withoptional: true
. Also deprecaterequired
option in favor ofoptional
forbelongs_to
. (Pull Request)Added
config.active_record.dump_schemas
to configure the behavior ofdb:structure:dump
. (Pull Request)Added
config.active_record.warn_on_records_fetched_greater_than
option. (Pull Request)Added a native JSON data type support in MySQL. (Pull Request)
Added support for dropping indexes concurrently in PostgreSQL. (Pull Request)
Added
#views
and#view_exists?
methods on connection adapters. (Pull Request)Added
ActiveRecord::Base.ignored_columns
to make some columns invisible from Active Record. (Pull Request)Added
connection.data_sources
andconnection.data_source_exists?
. These methods determine what relations can be used to back Active Record models (usually tables and views). (Pull Request)Allow fixtures files to set the model class in the YAML file itself. (Pull Request)
Added ability to default to
uuid
as primary key when generating database migrations. (Pull Request)Added
ActiveRecord::Relation#left_joins
andActiveRecord::Relation#left_outer_joins
. (Pull Request)Added
after_{create,update,delete}_commit
callbacks. (Pull Request)Version the API presented to migration classes, so we can change parameter defaults without breaking existing migrations, or forcing them to be rewritten through a deprecation cycle. (Pull Request)
ApplicationRecord
is a new superclass for all app models, analogous to app controllers subclassingApplicationController
instead of::ActionController::Base
. This gives apps a single spot to configure app-wide model behavior. (Pull Request)Added ActiveRecord
#second_to_last
and#third_to_last
methods. (Pull Request)Added ability to annotate database objects (tables, columns, indexes) with comments stored in database metadata for PostgreSQL & MySQL. (Pull Request)
Added prepared statements support to
mysql2
adapter, for mysql2 0.4.4+, Previously this was only supported on the deprecatedmysql
legacy adapter. To enable, setprepared_statements: true
inconfig/database.yml
. (Pull Request)Added ability to call
ActionRecord::Relation#update
on relation objects which will run validations on callbacks on all objects in the relation. (Pull Request)Added
:touch
option to thesave
method so that records can be saved without updating timestamps. (Pull Request)Added expression indexes and operator classes support for PostgreSQL. (commit)
Added
:index_errors
option to add indexes to errors of nested attributes. (Pull Request)Added support for bidirectional destroy dependencies. (Pull Request)
Added support for
after_commit
callbacks in transactional tests. (Pull Request)Added
foreign_key_exists?
method to see if a foreign key exists on a table or not. (Pull Request)Added
:time
option totouch
method to touch records with different time than the current time. (Pull Request)Change transaction callbacks to not swallow errors. Before this change any errors raised inside a transaction callback were getting rescued and printed in the logs, unless you used the (newly deprecated)
raise_in_transactional_callbacks = true
option.Now these errors are not rescued anymore and just bubble up, matching the behavior of other callbacks. (commit)
Active Model
Please refer to the Changelog for detailed changes.
Removals
Removed deprecated
ActiveModel::Dirty#reset_#{attribute
} andActiveModel::Dirty#reset_changes
. (Pull Request)Removed XML serialization. This feature has been extracted into the activemodel-serializers-xml gem. (Pull Request)
Removed
ActionController::ModelNaming
module. (Pull Request)
Deprecations
Deprecated returning
false
as a way to halt Active Model and::ActiveModel::Validations
callback chains. The recommended way is tothrow(:abort)
. (Pull Request)Deprecated
ActiveModel::Errors#get
,ActiveModel::Errors#set
andActiveModel::Errors#[]=
methods that have inconsistent behavior. (Pull Request)Deprecated the
:tokenizer
option forvalidates_length_of
, in favor of plain Ruby. (Pull Request)Deprecated
ActiveModel::Errors#add_on_empty
andActiveModel::Errors#add_on_blank
with no replacement. (Pull Request)
Notable changes
Added ActiveModel::Errors#details to determine what validator has failed. (Pull Request)
Extracted
::ActiveRecord::AttributeAssignment
to::ActiveModel::AttributeAssignment
allowing to use it for any object as an includable module. (Pull Request)Added
ActiveModel::Dirty#[attr_name]_previously_changed?
andActiveModel::Dirty#[attr_name]_previous_change
to improve access to recorded changes after the model has been saved. (Pull Request)Validate multiple contexts on
valid?
andinvalid?
at once. (Pull Request)Change
validates_acceptance_of
to accepttrue
as default value apart from1
. (Pull Request)
Active Job
Please refer to the Changelog for detailed changes.
Notable changes
ActiveJob::Base.deserialize
delegates to the job class. This allows jobs to attach arbitrary metadata when they get serialized and read it back when they get performed. (Pull Request)Add ability to configure the queue adapter on a per job basis without affecting each other. (Pull Request)
A generated job now inherits from
app/jobs/application_job.rb
by default. (Pull Request)Allow
DelayedJob
,Sidekiq
,qu
,que
, andqueue_classic
to report the job id back to::ActiveJob::Base
asprovider_job_id
. (Pull Request, Pull Request, commit)Implement a simple
AsyncJob
processor and associatedAsyncAdapter
that queue jobs to aconcurrent-ruby
thread pool. (Pull Request)Change the default adapter from inline to async. It's a better default as tests will then not mistakenly come to rely on behavior happening synchronously. (commit)
Active Support
Please refer to the Changelog for detailed changes.
Removals
Removed deprecated
ActiveSupport::JSON::Encoding::CircularReferenceError
. (commit)Removed deprecated methods
ActiveSupport::JSON::Encoding.encode_big_decimal_as_string=
andActiveSupport::JSON::Encoding.encode_big_decimal_as_string
. (commit)Removed deprecated ActiveSupport::SafeBuffer#prepend. (commit)
Removed deprecated methods from
Kernel
.silence_stderr
,silence_stream
,capture
andquietly
. (commit)Removed deprecated
active_support/core_ext/big_decimal/yaml_conversions
file. (commit)Removed deprecated methods ActiveSupport::Cache::Store#instrument and
ActiveSupport::Cache::Store.instrument=
. (commit)Removed deprecated
Class#superclass_delegating_accessor
. Use Class#class_attribute instead. (Pull Request)Removed deprecated
ThreadSafe::Cache
. UseConcurrent::Map
instead. (Pull Request)Removed
Object#itself
as it is implemented in Ruby 2.2. (Pull Request)
Deprecations
Deprecated
MissingSourceFile
in favor ofLoadError
. (commit)Deprecated
alias_method_chain
in favour ofModule#prepend
introduced in Ruby 2.0. (Pull Request)Deprecated
ActiveSupport::Concurrency::Latch
in favor ofConcurrent::CountDownLatch
from concurrent-ruby. (Pull Request)Deprecated
:prefix
option ofnumber_to_human_size
with no replacement. (Pull Request)Deprecated
Module#qualified_const_
in favour of the builtinModule#const_
methods. (Pull Request)Deprecated passing string to define callback. (Pull Request)
Deprecated
ActiveSupport::Cache::Store#namespaced_key
,ActiveSupport::Cache::MemCachedStore#escape_key
, andActiveSupport::Cache::FileStore#key_file_path
. Usenormalize_key
instead. (Pull Request, commit)Deprecated
ActiveSupport::Cache::LocaleCache#set_cache_value
in favor ofwrite_cache_value
. (Pull Request)Deprecated passing arguments to
assert_nothing_raised
. (Pull Request)Deprecated
Module.local_constants
in favor ofModule.constants(false)
. (Pull Request)
Notable changes
Added
#verified
and#valid_message?
methods to::ActiveSupport::MessageVerifier
. (Pull Request)Changed the way in which callback chains can be halted. The preferred method to halt a callback chain from now on is to explicitly
throw(:abort)
. (Pull Request)New config option
config.active_support.halt_callback_chains_on_return_false
to specify whether ActiveRecord, ActiveModel, and ActiveModel::Validations callback chains can be halted by returningfalse
in a 'before' callback. (Pull Request)Changed the default test order from
:sorted
to:random
. (commit)Added
#on_weekend?
,#on_weekday?
,#next_weekday
,#prev_weekday
methods toDate
,Time
, andDateTime
. (Pull Request, Pull Request)Added
same_time
option to#next_week
and#prev_week
forDate
,Time
, andDateTime
. (Pull Request)Added
#prev_day
and#next_day
counterparts to#yesterday
and#tomorrow
forDate
,Time
, andDateTime
. (Pull Request)Added SecureRandom.base58 for generation of random base58 strings. (commit)
Added
file_fixture
to::ActiveSupport::TestCase
. It provides a simple mechanism to access sample files in your test cases. (Pull Request)Added
#without
onEnumerable
andArray
to return a copy of an enumerable without the specified elements. (Pull Request)Added
::ActiveSupport::ArrayInquirer
and Array#inquiry. (Pull Request)Added ActiveSupport::TimeZone#strptime to allow parsing times as if from a given timezone. (commit)
Added
Integer#positive?
andInteger#negative?
query methods in the vein ofInteger#zero?
. (commit)Added a bang version to
::ActiveSupport::OrderedOptions
get methods which will raise anKeyError
if the value is.blank?
. (Pull Request)Added Time.days_in_year to return the number of days in the given year, or the current year if no argument is provided. (commit)
Added an evented file watcher to asynchronously detect changes in the application source code, routes, locales, etc. (Pull Request)
Added thread_m/cattr_accessor/reader/writer suite of methods for declaring class and module variables that live per-thread. (Pull Request)
Added Array#second_to_last and Array#third_to_last methods. (Pull Request)
Publish
::ActiveSupport::Executor
and::ActiveSupport::Reloader
APIs to allow components and libraries to manage, and participate in, the execution of application code, and the application reloading process. (Pull Request)::ActiveSupport::Duration
now supports ISO8601 formatting and parsing. (Pull Request)ActiveSupport::JSON.decode now supports parsing ISO8601 local times when
parse_json_times
is enabled. (Pull Request)ActiveSupport::JSON.decode now return
Date
objects for date strings. (Pull Request)Added ability to
TaggedLogging
to allow loggers to be instantiated multiple times so that they don't share tags with each other. (Pull Request)
Credits
See the full list of contributors to Rails for the many people who spent many hours making Rails, the stable and robust framework it is. Kudos to all of them.


Go to Tools -> Web Developer -> Web Console (or press CTRL-Shift-K) and enter calcpi(number of slices) at the prompt at the bottom of the screen.
Go to Tools -> JavaScript Console (or press CTRL-Shift-J) and enter calcpi(number of slices) at the prompt to the right of the screen.


When a branch is deactivated, tests and deploys can only be triggered manually.
When "deploy on green" is disabled, automatically triggered builds will not deploy.
These keys will be available to any plugins that need ssh keys. Plugins may however choose to use different keys.


|
Young
Grow Old
(Tremonti/Stapp) |
|
He
said he's falling to pieces
Fighting the boy and the man Over his shoulder there was freedom But consciousness has tied his hands Embodied youth was his distinction Now inhibition's in demand So driven by his fear of weakness That's his key to understand So far in a distant land There's a fight between boy and man See the light through the open door Sit and watch as the young grow old Trading places in the circle Turn the glass, spill the sand They say that time can make the difference But age doesn't make you a man So far in a distant land There's a fight between boy and man See the light through the open door Sit and watch as the young grow old So young but overblown So young but overblown So young but overblown Take a look now, see the boy is weakened Watch him fade, watch him fade away Take a bow and the boy is defeated Is this the way, this the way? So far in a distant land There's a fight between boy and man See the light through the open door Sit and watch as the young grow old |
|
|


[gecode-users] Problem with constraint
Ujhelyi Zoltan
uz602 at hszk.bme.hu
Sun Aug 10 23:21:22 CEST 2008
Hello again,
I have been experimenting with the questions raised in my previous mail.
I created a small Gecode space to be able to test the problem in a
smaller scale, where I did use two variables (variable1, variable2,
both IntVars with the domain {0,5}) and three constraints: variable1
equals variable2, and variable2 cannot have the values 2 and 4.
In all of my tests the latter two constraints are described like that:
post(space, new BExpr(space.variable1, IRT_NQ, 2));
post(space, new BExpr(space.variable1, IRT_NQ, 4));
For the third constraint I had several tries. When I was using the
rel() clause to write the constraint, I got the expected result:
Variable #1: {0..1,3,5}
Variable #2: {0..1,3,5}
But when using a similar construct I would like to use in the static
verifier, I got no result for the second variable, it can has all
values from it's domain.
post(space, new BExpr(space.variable1, IRT_EQ, space.variable2));
Reading about different propagators, I have been able to get the
expected result with the use of the ICL_DOM propagator, but only if I
was posting the constraint directly, like that:
post(space, new Expr(space.variable1), IRT_EQ, new
Expr(space.variable2),org.gecode.GecodeEnumConstants.ICL_DOM);
But if I tried to translate the a BExprs to that form, I did not
succeed:
Expr expression = new Expr(new
Expr(space.variable2).minus(space.variable1));
post(space, new Expr(expression), IRT_EQ, 0,
org.gecode.GecodeEnumConstants.ICL_DOM);
Can you tell me a way how to enable this strong ICL_DOM propagators
meanwhile using the BExpr form, if it is possible? It would help our
project a lot, it would simplify it's code.
Thank you for your help,
Zoltán Ujhelyi
On 2008.08.09., at 18:30, Ujhelyi Zoltan wrote:
> Hello all,
>
> we are currently trying to build a static checker system on top of
> Gecode/J 2.1.1. (in an Eclipse environment), and we have found an
> interesting case.
>
> In order to allow us greater flexibility we try to use the Expression
> API (it allows us to build constraints in a hierarchical manner).
>
> I was testing the implementation, and found an interesting final
> result: there were to IntVars, which were supposed to be the same, did
> not have the same final ranges: one of them had {2,4}, but the other
> had {2,3,4}. I tried to trace back the code to look whether the
> constraints were wrong or not, and found the following expression
> building term:
>
> BExpr expression = new BExpr(new Expr(variable1),relation, new
> Expr(variable2));
>
> Tracing the variables variable1 was a new variable, it hadn't been
> constrained yet, while variable2's domain had been limited to the
> values 2 and 4 (and they were the variables mentioned before in this
> letter), while the relation had the value IRT_EQ.
>
> I tried a post of the expression right after it's construction to see
> whether it helps or not:
> org.gecode.Gecode.post(space, expression);
>
> It did not solve the problem, but when I replaced the post method to
> the following rel call, the constraint handling was working as I
> expected it before.
>
> rel(space, variable1, IntRelType.IRT_EQ, variable2);
>
> I would like to know, whether this phenomenon is the intentional
> (maybe I do not understand something under the hood), or not. And if
> you could tell me a way to avoid it, I would be very glad.
>
> Thank you very much in advance for your help,
> Zoltán Ujhelyi
> _______________________________________________
> Gecode users mailing list
> users at gecode.org
> https://www.gecode.org/mailman/listinfo/gecode-users
More information about the gecode-users
mailing list


Bio
Hi! I am a PostDoc at Stanford CS and the Wu Tsai Human Performance Alliance. I work closely with Prof. Serena Yeung, Prof. Karen Liu, Prof. Scott Delp and members in their groups.
Previously, I obtained my Ph.D. from the University of Toronto (UofT) and Vector Institute and was advised by Prof. Rich Zemel. I obtained my undergraduate degree from Engineering Science at UofT. I was born and raised in Taipei, Taiwan.
Here is my CV/Resume.
Research Interest
My research centers around deep learning, probabilistic generative models, computer vision, and digital human models.
Clear gaps exist between current AI models and human capabilities, including a 3D understanding of the world and the ability to quickly adapt to new tasks. Driven by these gaps, my recent focus is on 3D computer vision and open-world learning.
If you are interested in similar topics, reach out!
Publications
2023
"Generalizable Neural Fields as Partially Observed Neural Processes"
Jeffrey Gu,
Kuan-Chieh Wang,
and Serena Yeung
In ICCV
2023
"NeMo: 3D Neural Motion Fields from Multiple Video Instances of the Same Action"
Kuan-Chieh Wang,
Zhenzhen Weng,
Maria Xenochristou,
Joao Pedro Araujo,
Jeffrey Gu,
C Karen Liu,
and Serena Yeung
In CVPR
2023
-- Highlight (2.5% of submissions)
[📄 Paper]
[🌐 Project Page]
[🛠 Code]
"PROB: Probabilistic Objectness for Open World Object Detection"
Orr Zohar,
Kuan-Chieh Wang,
and Serena Yeung
In CVPR
2023
[📄 Paper]
[🛠 Code]
"DrML: Diagnosing and Rectifying Vision Models using Language"
Yuhui Zhang,
Jeff Z HaoChen,
Shih-Cheng Huang,
Kuan-Chieh Wang,
James Zou,
and Serena Yeung
In ICLR
2023
[📄 Paper]
[🛠 Code]
2022
"Domain Adaptive 3D Pose Augmentation for In-the-wild Human Mesh Recovery"
Zhenzhen Weng,
Kuan-Chieh Wang,
Angjoo Kanazawa,
and Serena Yeung
In 3DV
2022
[📄 Paper]
[🛠 Code]
"Disentanglement and generalization under correlation shifts"
Christina M Funke,
Paul Vicol,
Kuan-Chieh Wang,
Matthias Kümmerer,
Richard Zemel,
and Matthias Bethge
In Conference on Lifelong Learning Agents
2022
[📄 Paper]
2021
"Variational Model Inversion Attacks"
Kuan-Chieh Wang,
Yan Fu,
Ke Li,
Ashish Khisti,
Richard Zemel,
and Alireza Makhzani
In NeurIPS
2021
[📄 Paper]
[🛠 Code]
"Grad2Task: Improved Few-shot Text Classification Using Gradients for Task Representation"
Jixuan Wang,
Kuan-Chieh Wang,
Frank Rudzicz,
and Michael Brudno
In NeurIPS
2021
[📄 Paper]
[🛠 Code]
"Understanding and mitigating exploding inverses in invertible neural networks"
Jens Behrmann*,
Paul Vicol*,
Kuan-Chieh Wang*,
Roger B. Grosse,
and Jörn-Henrik Jacobsen
In AISTATS
2021
[📄 Paper]
[🛠 Code]
2020
"Few-shot Out-of-Distribution Detection"
Kuan-Chieh Wang,
Paul Vicol,
Eleni Triantafillou,
and Richard Zemel
In ICML Workshop on Uncertainty and Robustness in Deep Learning
2020
-- Spotlight
[🌐 HTML]
[🛠 Code]
"Cutting out the Middle-Man: Training and Evaluating Energy-Based Models without Sampling"
Will Grathwohl,
Kuan-Chieh Wang,
Jorn-Henrik Jacobsen,
David Duvenaud,
and Richard Zemel
In ICML
2020
[📄 Paper]
[🛠 Code]
"Your classifier is secretly an energy based model and you should treat it like one"
Will Grathwohl,
Kuan-Chieh Wang*,
Jörn-Henrik Jacobsen*,
David Duvenaud,
Mohammad Norouzi,
and Kevin Swersky
In ICLR
2020
-- Oral
[📄 Paper]
[🛠 Code]
2019
"Customizable Facial Gesture Recognition For Improved Assistive Technology"
Kuan-Chieh Wang,
Jixuan Wang,
Khai Truong,
and Richard Zemel
In ICLR AI for Social Good Workshop
2019
[🌐 HTML]
"Towards Few-Shot Out-of-Distribution Detection"
Kuan-Chieh Wang*,
Chia-Cheng Liu*,
Paul Vicol,
and Richard Zemel
In ICLR Safe Machine Learning Workshop
2019
[🌐 HTML]
"Lingvo: a modular and scalable framework for sequence-to-sequence modeling"
Jonathan Shen,
Patrick Nguyen,
Yonghui Wu,
Zhifeng Chen,
Mia X Chen,
Ye Jia,
Anjuli Kannan,
Tara Sainath,
Yuan Cao,
Chung-Cheng Chiu,
and others
Technical Report
2019
[📄 Paper]
[🛠 Code]
"Centroid-based deep metric learning for speaker recognition"
Jixuan Wang*,
Kuan-Chieh Wang*,
Marc T Law,
Frank Rudzicz,
and Michael Brudno
In ICASSP
2019
[📄 Paper]
2018
"Adversarial distillation of Bayesian neural network posteriors"
Kuan-Chieh Wang,
Paul Vicol,
James Lucas,
Li Gu,
Roger Grosse,
and Richard Zemel
In ICML
2018
[📄 Paper]
[🛠 Code]
"Neural Relational Inference for Interacting Systems"
Thomas Kipf*,
Ethan Fetaya*,
Kuan-Chieh Wang,
Max Welling,
and Richard Zemel
In ICML
2018
[📄 Paper]
[🛠 Code]
2017
"Dualing GANs"
Yujia Li,
Alexander Schwing,
Kuan-Chieh Wang,
and Richard Zemel
In NeurIPS
2017
-- Spotlight
[📄 Paper]
2016
"Classifying NBA offensive plays using neural networks"
Kuan-Chieh Wang,
and Richard Zemel
In MIT Sloan Sports Analytics Conference
2016
[📄 Paper]
Professional Experience
I was
- an intern at Google Brain (MTV, TOR) in 2018 hosted by Chung-Cheng Chiu. We worked on speech recognition together.
- a research student working with the Toronto Raptors’ analysts Keith Boyarsky and Eric Khoury. My mom likes to believe that the Toronto Raptors getting better, and eventually winning the Championship in 2019 had something to do with my research. 🤔
- a ML consultant at SmartFinance LLC, a start-up Rich co-founded. We had some fun trying to make finance easier with ML.


Context Nodes
Background
A context node provides background information for a goal or solution node.
The background information captures constraints on the applicability of the node to which it is attached.
Context provides information necessary for an Argument (or other GSN element) to be understood or amplified.
Context may include a statement which limits the scope of an Argument in some way.
Application
To add a context node to the case argument model, right-click on a Goal or Solution node,
choose Add Child... from the pop-up menu, and choose Context. Select the new context node
and then complete its properties in the property sheet form.
References
- Wilson et al., Safety Case Development: Current Practice, Future Prospects, University of York, 1997.
- Safety Case Development Manual, European Organization for the Safety of Air Navigation, DAP/SSH/091, Edition 2.1, 2006.
- System Assurance Task Force: Argumentation Metamodel (ARM), Object Management Group, March 2010.


---
title: Experience
layout: page
permalink: /experience/
---
{% include scripts.html %}
Download my CV
{% assign experiences = site.experience | sort: 'date' | reverse %}
Work experiences
{% assign current_type = "employment" %}
{% for exp in experiences %}
{% include card-experience.html experience = exp %}
{% endfor %}
Collaborations
{% assign current_type = "collaboration" %}
{% for exp in experiences %}
{% include card-experience.html experience = exp %}
{% endfor %}


Kilmarnock photographer to help support refugee camps on Greek island
Nathan McNaughton is heading to Lesbos after being held at knifepoint in Columbia.
by Tara FitzpatrickA Kilmarnock photography student is heading to a Greek island to support refugee camps housing those fleeing conflict.
Nathan McNaughton will work with the charity Refugees 4 Refugees who provide lifesaving help to those living in the camps on Lesvos — also known as Lesbos — at the forefront of the humanitarian crisis.
Nathan, 21, has travelled across the world for photography projects from Colombia to Nepal in the past and has decided to use his time building a portfolio of work as a way to support the organisation.
“I asked them if I could come and document their work and they said yes but I also want to volunteer,” Nathan told the Kilmarnock Standard.
“I don’t want to just take images. I want to make sure I am actually helping.”
Nathan, who currently studies at the Robert Gordon University in Aberdeen, will depart for the island on Saturday, November 23 where he will spend two weeks volunteering — and will celebrate his 22nd birthday in the camps.
Sea arrivals to the Greek Island reception centres in September rose to more than 10,000 — the highest monthly level since 2016.
Many refugees are on journeys to Europe, predominantly from Syrian and Afghan territories while many are unaccompanied children.
Residents of Lesvos were nominated in 2016 for the Nobel Peace Prize for their dedication to saving thousands of refugees who arrived, often penniless, on the shores of the island in 2015.
Speaking about his expectations for his arrival at the camps, Nathan said: “It’s something I have previously been interested in.
“This will put me right on the frontline of the crisis. I’m a wee bit nervous but I’m ready to get to work.
“I will be volunteering up to 12 hours a day and be on call for whatever happens.”
Refugees 4 Refugees is a non-political organisation supporting refugees and also creating environments for other asylum seekers to get directly involved in relief efforts.
It was founded by Omar Alshakal — who arrived in Europe in 2014 after swimming for 14 hours from Turkey to Greece — after he experienced the weaknesses and flaws in the asylum process firsthand.
While this will be Nathan’s first experience at a refugee camp, the student says he is prepared for what lies ahead.
“I have had a few experiences which have helped me prepare for challenging situations,” he said.
“When I was in Colombia, I was robbed which was quite scary.”
In 2017, Nathan was forced to launch a crowdfunding campaign after he was held up at knifepoint in the South American country.
At the time of the incident, he had been volunteering at a school in one of the most impoverished parts of the country Santa Marta.
On his way home from his travels, his precious kit — worth more than £5000 — was stolen when he was mugged by four men in the capital city Bogotá.
Despite these terrifying experiences, Nathan says he is still motivated to work as a photographer across the world.
“My desire to travel is stronger as a result. It has been a reality check for me,” he said.
“Things like this can happen and it’s all about how to tackle these situations.”


BBC Sherlock is one of my favorite TV shows because Benedict Cumberbatch's portrayal of Sherlock and Andrew Scott's portrayal of Moriarty is fantastic, and the writing is brilliant!
Peaky Blinders is one of my favorite TV shows because of the talented cast, strong female characters, unique plot, historical setting, and superb writing!
Dead Poet Society is one of my favorite films because it inspired me to live life to the fullest and embrace my individuality!
Gattaca is one of my favorite films because it explores these important themes: utopia and dsytopia, genetic discrimination, the human spirit, human flaws, science and religion, identity, and courage.
It is very moving. Michael Nyman's music adds an emotional rawness to the film!
Visit my computer science course webpage!
Visit my professor's personal webpage!
Visit my friend Sophie's personal webpage!
Visit my friend Brandon's personal webpage!
Visit my friend Sam's personal webpage!
Visit my friend Refe22's personal webpage!
Visit my friend Hoang Chu's personal webpage!
Visit my friend Tkapoor22's personal webpage!
Visit my friend Zac's personal webpage!
Visit my friend Ohorban's personal webpage!
Visit my friend Dorcassaka's personal webpage!


I work as a developer on multiple cross-displinary projects. Most of these involve working with researchers in various physical science labs and their research applications.
I've also worked with Data Scientists to help create developer tools to easily access our separate applications, creating tooling that "wraps" around our APIs to accelerate development.


Analysing of house price of Nanjing
The inspiration of this app is from Stefan, his app about R blog exploring is really amazing and impresive. Base on the networks structure, we would like to create something of our own, and it happens that we were researching price data of real estate.
In general, house price is a very common topic among Chinese people, you can hear things about houses almost every day, but most of the time, opinions from others are actually not truth, only data can tell you something new. Here we use python crawler to collect data from online website of house agencies, and visualization of the summarizing data is based on echarts4r. The initial and simple goal of this app is to offer some insight view for the people who is insterested or is planning to buy a real estate but with little knowledge about the business, and we hope the data we prepared will help you to have a basic concept about the house price.
Where is the data source?
The data is scraped from web pages of house agencies like Lianjia and Anjuke. Basicly, the house type is splited into new house and second house, for example, there are about 900 new house and 90000+ second house on trading market, we scraped their data in different way, cause their online available information is slightly different.
About the graph and data in this app, there is something that need to know,
- Currently, the data is from Lianjia, which offers more feasible information than Anjuke, but later we may offer an option for user to pick data source.
- Actually only 100 pages of web can scraped from the web, which means only 3000 of the house info records in each district, statisticly it is enough to represent the whole sample.
- The data will be updated weekly since it is first online.
If you are interested in original data, please send a request to our email(w4356y@163.com).
What we can see from the data?
Based on the data and graph in this page, we can conclude some points, for new house,
- 新楼盘中秦淮区价格最高，均价达38300元/平米;
- 新楼盘可分为3级，第一级包括秦淮，玄武，建邺和鼓楼四区，均价36000+，新房源较少;第二级包括雨花台，栖霞，浦口和江宁四区，均价24000~30000之间，房源充足;第三级为其他区域，均价15000以下，房源供应偏少；
- 新楼盘住宅和在售占比均超过50%;
- 新楼盘中环线房，现房，公交直达和地铁沿线是最常见标签;
For second-hand house,
- 鼓楼和建邺区的二手房价最高，40000左右;
- 江宁和浦口的二手房房源最多;
- 鼓楼、建邺、玄武和秦淮二手房价处于第一梯队，均价超过30000;栖霞、雨花台、江宁和浦口处于第二梯队，房价再20000~30000之间;六合、溧水和高淳处于第三等级，二手房均价17000以下；
- 二手房中，3室2厅和2室1厅的房源最多;
- 85~90平的房源最多，而90平以下房源中,60~70平的房源最多;
- 二手房源中，05年到17年建的房子较多;
- 二手房源中，建造时间越早，价格越高，可能和地理位置和学区有关;
- 大部分人关注20000~35000之间二手房;
- 二手房上线时间越久，价格越低，刚上线5~30天的房源关注人数最多;
Overall, We are very happy with these results. In fact, we think they are quite astonishing. If you need more data or other analysis, please contact us via email.


@* * Copyright 2023 HM Revenue & Customs * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. *@ @import uk.gov.hmrc.apidocumentation.views.apispecification.helpers._ @(fields: Seq[RequestResponseField2], caption: String, fieldOptionalityKnown: Boolean) @if(fields.nonEmpty) {
| Name | Description |
|---|---|
|
@{field.name}
@if(field.isArray) {array} else<EMAIL_ADDRESS>@if(fieldOptionalityKnown) {
@if(field.required) {
required
} else {
optional
}
}
|
@if(field.description.isDefined) {
@{field.description} } @field.typeId match { case "full-date" => {Date in the format Tax year in the format
Must conform to the regular expression Limited to the following possible values:
@for(enumValue <- field.enumValues) {
} else {
@if(field.example.isDefined) {
@{enumValue.name}
@if(enumValue.description.isDefined) { - @{enumValue.description} }
For example: |


Members
errors
Predefined List of Errors to manipulate them all at one place.
reservedFieldNames
The following are reserved fields and filters that serve as 'keywords' and must not be used inside a row of a table in the database.
The reservedFilters are filters that the user can use for querying, refer to the querying docs for a guide on that.
unserialize
File ops coming soon.
Methods
createDatabase(dbName) → {undefined}
Creates a new database with dbName.
Doesn't allow overwriting the previously existing one.
Parameters:
| Name | Type | Description |
|---|---|---|
dbName |
string | The name of the database. |
Returns:
- Type
- undefined
generateUniqueId() → {Number}
Generates a unique id to be used in fields such as 'entryId'.
Returns:
A sufficiently random number that can be used as a unique Id.
- Type
- Number
getDatabase(dbName) → {string}
Gets the database with dbName.
Parameters:
| Name | Type | Description |
|---|---|---|
dbName |
string | The name of the database. |
Returns:
The serialized/stringified database data in localStorage.
- Type
- string
getNestedField(row, fieldToGet) → {any}
Function to get nested fields from objects, using strings like: 'parentField.childField'.
Parameters:
| Name | Type | Description |
|---|---|---|
row |
Object | The object representing a row in a database table. |
fieldToGet |
String | The string representation of the field to get from the database. |
Returns:
- Type
- any
rowMatchesFilters(row, filters) → {Boolean}
Checks whether a table row matches filters or not.
Parameters:
| Name | Type | Description |
|---|---|---|
row |
Object | The row to validate. |
filters |
Object | The filters to validate against. |
Returns:
- Type
- Boolean
validateValueAgainstFilter(filterValue, value) → {Boolean}
Function to validate value against a regex or just plain value.
Parameters:
| Name | Type | Description |
|---|---|---|
filterValue |
any | The value of the filter to validate against. |
value |
any | The value to check for equality. |
Returns:
- Type
- Boolean
verifyByCustomOperation(row, field, valueToValidateOn) → {Boolean}
Function to check if a row in a table matches a specified operation or not. (Operations such as in, not, not-in, includes, not includes etc).
Parameters:
| Name | Type | Description |
|---|---|---|
row |
Object | The object representing a row in a database table. |
field |
field | Name of field to verify operation on. |
valueToValidateOn |
* | The value to compare with, type depends on the operation. |
Returns:
- Type
- Boolean
verifyOrOperation(row, subFilters) → {Boolean}
Function to check if a row in a table matches any one of the specified operations or not. I.E: "Or" Operations.
Parameters:
| Name | Type | Description |
|---|---|---|
row |
Object | The object representing a row in a database table. |
subFilters |
Array | The filters to check the row against. |
Returns:
- Type
- Boolean
writeDatabase(dbName, databaseObject) → {undefined}
Serializes an object and writes it to a database in localStorage.
Parameters:
| Name | Type | Description |
|---|---|---|
dbName |
string | The name of the database to write to. |
databaseObject |
object | The object to serialize and write. |
Returns:
- Type
- undefined


EpiCSeg report
1. Model parameters
2. Segmentation
state colors
segmentation as a .bed file (DS1)
segmentation as a .bed file (DS2)
3. Genomic annotations


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Merging collapsible if statements increases the code's readability.
if
if condition1 { if condition2 { # ... } }
if condition1 and condition2 { # ... }


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The page you were looking for doesn't exist
Still no luck? Probably its better to report an issue.


Microwave Time Calculator
Stuff I Use
Shorten Google Search Links
Generate Amazon Short Links
Generate Google App Links for Specific Accounts
Random User Name Generator
PostgreSQL Migrations
Email me
Linkedin
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View project on
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A galery of the different charts available
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AreaChart
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AreaChart w/ Cross hair
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AreaChart w/ Vertical mouse pointer
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AreaChart w/ CH & Tooltip
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AreaChart w/ Moving Average overlay
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AreaChart w/ Edge coordinates
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Synchronized mouse move
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Zoom
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Zoom & Pan
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Synchronized Zoom & Pan
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Synchronized Zoom & Pan
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Synchronized Z & P w/ varying interval
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Synchronized Z & P w/ varying interval
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w/ Volume chart
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w/ Volume Profile
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CandlestickChart
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LineChart
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EMA
Bolinger Bands
MAC-D
RSI
Stochastics
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Grommet's modular design enables you to use the parts of Grommet applicable to your application. There are several ways you can benefit from using Grommet based on the needs of your users and your application. The options range from referencing the style guide and its basic elements to complete adoption of the platform.
Your team references the Grommet style guide with an emphasis on brand alignment, primarily around the logo, font, and color palette. If your application is not in a position to begin adopting a new platform, this option may be the most appropriate option. You may find the Grommet CSS elements a useful reference.
Your application uses the Grommet CSS elements to ensure styling of components is aligned. Your application's DOM structure will likely need to change to align with the DOM structure expected by the Grommet CSS.
Your application leverages the Grommet components with the accompanying markup, styling, and images. This model is appropriate in several situations:
Your application is new or is being rewritten to use the Grommet components and a set of common services for features as search, associations, and dashboards.


GrapheneOS servers
This is a detailed list of the public GrapheneOS servers.
GrapheneOS website
Specs:
- 3x OVH VPS vps2020-value-1-2-40
- 1 core
- 2 GB memory
- 40 GB NVMe SSD storage
- 250 Mbit/s bandwidth
Domains:
- grapheneos.org
- www.grapheneos.org
- grapheneos.app
- www.grapheneos.app
- grapheneos.ca
- www.grapheneos.ca
- grapheneos.com
- www.grapheneos.com
- grapheneos.dev
- www.grapheneos.dev
- grapheneos.info
- www.grapheneos.info
- grapheneos.net
- www.grapheneos.net
- grapheneos.ovh
- www.grapheneos.ovh
- grapheneos.page
- www.grapheneos.page
- vanadium.app
- www.vanadium.app
- mta-sts.grapheneos.org
- mta-sts.mail.grapheneos.org
- mta-sts.grapheneos.app
- mta-sts.grapheneos.ca
- mta-sts.grapheneos.com
- mta-sts.grapheneos.dev
- mta-sts.grapheneos.info
- mta-sts.grapheneos.net
- mta-sts.grapheneos.ovh
- mta-sts.grapheneos.page
- mta-sts.vanadium.app
IPs:
- <IP_ADDRESS> (0.grapheneos.org) — os-bhs2
- 2607:5300:201:3100::1aae (0.grapheneos.org) — os-bhs2
- <IP_ADDRESS> (1.grapheneos.org) — os-gra8
- 2001:41d0:304:200::a087 (1.grapheneos.org) — os-gra8
- <IP_ADDRESS> (2.grapheneos.org) — os-sgp2
- 2402:1f00:8000:800::25ba (2.grapheneos.org) — os-sgp2
Ports:
- 22 ssh - no passwords, SSHFP
- 80 http - HTTPS redirect only
- 443 https - static, DANE TLSA
Staging GrapheneOS website
Specs:
- OVH VPS vps2020-starter-1-2-20
- 1 core
- 2 GB memory
- 20 GB SATA SSD storage
- 100 Mbit/s bandwidth
Domains:
- staging.grapheneos.org
IPs:
- <IP_ADDRESS> — os-bhs6
- 2607:5300:205:200::a23 — os-bhs6
Ports:
- 22 ssh - no passwords, SSHFP
- 80 http - HTTPS redirect only
- 443 https - static, DANE TLSA
GrapheneOS release servers
Specs:
- 8x OVH VPS vps2020-elite-8-8-160
- 8 core
- 8 GB memory
- 160 GB NVMe SSD storage
- 2000 Mbit/s bandwidth
Domains:
- releases.grapheneos.org
- seamlessupdate.app
- www.seamlessupdate.app
- mta-sts.seamlessupdate.app
- apps.grapheneos.org
IPs:
- <IP_ADDRESS> (0.releases.grapheneos.org) — os-bhs2
- 2607:5300:201:3100::6210 (0.releases.grapheneos.org) — os-bhs2
- <IP_ADDRESS> (1.releases.grapheneos.org) — os-bhs6
- 2607:5300:205:200::2441 (1.releases.grapheneos.org) — os-bhs6
- <IP_ADDRESS> (2.releases.grapheneos.org) — os-bhs6
- 2607:5300:205:200::3f46 (2.releases.grapheneos.org) — os-bhs6
- <IP_ADDRESS> (3.releases.grapheneos.org) — os-bhs6
- 2607:5300:205:200::39fe (3.releases.grapheneos.org) — os-bhs6
- <IP_ADDRESS> (4.releases.grapheneos.org) — os-gra8
- 2001:41d0:304:200::14ff (4.releases.grapheneos.org) — os-gra8
- <IP_ADDRESS> (5.releases.grapheneos.org) — os-gra8
- 2001:41d0:304:200::a687 (5.releases.grapheneos.org) — os-gra8
- <IP_ADDRESS> (6.releases.grapheneos.org) — os-de2
- 2001:41d0:701:1100::2ec9 (6.releases.grapheneos.org) — os-de2
- <IP_ADDRESS> (7.releases.grapheneos.org) — os-de2
- 2001:41d0:701:1100::3e56 (7.releases.grapheneos.org) — os-de2
Ports:
- 22 ssh - no passwords, SSHFP
- 80 http - HTTPS redirect only
- 443 https - static, DANE TLSA
GrapheneOS connectivity check / time servers
Specs:
- 3x OVH VPS vps2020-value-1-2-40
- 1 core
- 2 GB memory
- 40 GB NVMe SSD storage
- 250 Mbit/s bandwidth
Domains:
- grapheneos.network
- connectivitycheck.grapheneos.network
- www.grapheneos.network
- grapheneos.online
- connectivitycheck.grapheneos.online
- www.grapheneos.online
- connectivitycheck.grapheneos.org (legacy)
- connectivity.grapheneos.org (legacy)
- mta-sts.grapheneos.network
- mta-sts.grapheneos.online
- time.grapheneos.org
IPs:
- <IP_ADDRESS> (0.grapheneos.network) — os-bhs6
- 2607:5300:205:200::b44 (0.grapheneos.network) — os-bhs6
- <IP_ADDRESS> (1.grapheneos.network) — os-gra8
- 2001:41d0:304:200::df95 (1.grapheneos.network) — os-gra8
- <IP_ADDRESS> (2.grapheneos.network) — os-sgp2
- 2402:1f00:8000:800::e14 (2.grapheneos.network) — os-sgp2
Ports:
- 22 ssh - no passwords, SSHFP
- 80 http - no content, returns 204 response code for /generate_204 and /gen_204, HTTPS redirect for other URLs
- 443 https - no content, returns 204 response code for /generate_204 and /gen_204, DANE TLSA
GrapheneOS mail server
Specs:
- OVH VPS vps2020-value-1-2-40
- 1 core
- 2 GB memory
- 40 GB NVMe SSD storage
- 250 Mbit/s bandwidth
Domains:
- mail.grapheneos.org
IPs:
- <IP_ADDRESS> — os-bhs6
- 2607:5300:205:200::94f — os-bhs6
Ports:
- 22 ssh - no passwords, SSHFP
- 25 smtp - DANE TLSA
- 465 submissions - AUTH only, DANE TLSA
- 993 imaps - DANE TLSA
GrapheneOS Matrix server
Specs:
- OVH VPS vps2020-comfort-4-8-160
- 4 core
- 8 GB memory
- 160 GB NVMe SSD storage
- 1000 Mbit/s bandwidth
Domains:
- matrix.grapheneos.org
- element.grapheneos.org
IPs:
- <IP_ADDRESS> — os-bhs6
- 2607:5300:205:200::26e1 — os-bhs6
Ports:
- 22 ssh - no passwords, SSHFP
- 80 http - HTTPS redirect only
- 443 https - reverse proxy to Synapse for matrix.grapheneos.org and static site providing Element for element.grapheneos.org, DANE TLSA
GrapheneOS DNS servers
Specs:
- 2x OVH VPS vps2020-value-1-2-40
- 1 core
- 2 GB memory
- 40 GB NVMe SSD storage
- 250 Mbit/s bandwidth
Domains:
- ns1.grapheneos.org
- ns2.grapheneos.org
IPs:
- <IP_ADDRESS> (ns1.grapheneos.org) — os-bhs6
- 2607:5300:205:200::29e8 (ns1.grapheneos.org) — os-bhs6
- <IP_ADDRESS> (ns2.grapheneos.org) — os-gra8
- 2001:41d0:304:200::528 (ns2.grapheneos.org) — os-gra8
Ports:
- TCP 22 ssh - no passwords, SSHFP
- TCP 53 domain - DNS
- UDP 53 domain - DNS
Staging GrapheneOS DNS server
Specs:
- OVH VPS vps2020-starter-1-2-20
- 1 core
- 2 GB memory
- 20 GB SATA SSD storage
- 100 Mbit/s bandwidth
Domains:
- staging.ns1.grapheneos.org
IPs:
- <IP_ADDRESS> — os-bhs6
- 2607:5300:205:200::3afd — os-bhs6
Ports:
- TCP 22 ssh - no passwords, SSHFP
- TCP 53 domain - DNS
- UDP 53 domain - DNS
Attestation website and service
Specs:
- OVH VPS vps2020-essential-2-4-80
- 2 core
- 4 GB memory
- 80 GB NVMe SSD storage
- 500 Mbit/s bandwidth
Domains:
- attestation.app
- www.attestation.app
- attestation.grapheneos.org
- mta-sts.attestation.app
IPs:
- <IP_ADDRESS> — os-bhs6
- 2607:5300:205:200::86a — os-bhs6
Ports:
- 22 ssh - no passwords, SSHFP
- 80 http - HTTPS redirect only
- 443 https - static + reverse proxy to attestation service, DANE TLSA
Staging attestation website and service
Specs:
- OVH VPS vps2020-starter-1-2-20
- 1 core
- 2 GB memory
- 20 GB SATA SSD storage
- 100 Mbit/s bandwidth
Domains:
- staging.attestation.app
IPs:
- <IP_ADDRESS> — os-bhs6
- 2607:5300:205:200::1585 — os-bhs6
Ports:
- 22 ssh - no passwords, SSHFP
- 80 http - HTTPS redirect only
- 443 https - static + reverse proxy to attestation service, DANE TLSA


|
Johann Wolfgang von GoetheJohann Wolfgang von Goethe (Aug. 28, 1749 - Mar. 22, 1832) "The world is for thousands a freak show; the images flicker past and
vanish; the impressions remain flat and unconnected in the soul. Thus
they are easily led by the opinions of others, are content to let their
impressions be shuffled, rearranged, and evaluated differently." He was also the leader of the German Romantic movement which profoundly influenced the growth of sonnets, romanticism, lyrical poetry, and love notes. He allowed women to fully shape his career, and his work thrived on their input. He wrote Moral-sensuous erotic librettos with remarkable elegance, enabling sixteen year olds to fall in love with him at the drop of a bonnet, even while he was in his late seventies. Goethe met, in his lifetime, an enviable collection of naive, middle-class girls who found themselves in that precious phase of "waiting" for that one special male who could trigger their dormant passions. The Quotable Goethe: The true, prescriptive artist strives after artistic truth; the lawless artist, following blind instinct, after an appearance of naturalness. The one leads to the highest peaks of art, the other to its lowest depths. One of the most striking signs of the decay of art is when we see its separate forms jumbled together. One ought, every day at least, to hear a little song, read a good poem, see a fine picture, and, if it were possible, to speak a few reasonable words. Man knows only when he is satisfied and when he suffers, and only
his sufferings and his satisfactions instruct him concerning himself,
teach him what to seek and what to avoid.  No two men see the world exactly alike, and different temperaments will apply in different ways a principle that they both acknowledge. The same man will, indeed, often see and judge the same things differently on different occasions: early convictions must give way to more mature ones. Nevertheless, may not the opinions that a man holds and expresses withstand all trials, if he only remains true to himself and others? He who has a task to perform must know how to take sides, or he is quite unworthy of it. |


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Previous article: Concepts - Linear Algebra
Next article: Concepts - Machine Learning
Statistics: inferences from data
As a brief introduction we will try to define what statistics is, and to clarify the relations between statistics and adjacent fields like mathematics and machine learning.
Statistics has a main goal and that is to extract meaning from data. Moore uses a definition that refers to the distinct steps of statistics project: 'Statistics is the science of collecting, organizing, and interpreting numerical facts, which we call data'.
Let us start with what data is. It is not just numbers or labels; one does not have data without the context. A list of numbers is a list of numbers without the knowledge of their meaning. Without the context we do not know if the numbers make sense or not and we cannot be sure whether we are allowed to use statistical techniques.
Since we deal a lot with numbers, mathematics do have an important role; it provides the theory at a level of abstraction characteristic of mathematics. For example, a binomial distribution behaves the same for all random processes that have a binary result; and that is great to know. From the moment we move away from the abstraction towards the real world, we need to make all sort of decisions and use our intuition. That is, we move beyond mathematics, into statistics.
As statistics is an applied field it grew out the practical problems of science and industry. The form statistics has assumed in the 20th century can be in great part explained by these needs. Think of quality control for a moment. It is imperative to work with a sample, since we cannot simply try every single barrel of whiskey to verify its quality, and find a way to draw inferences from the sample so that their validity extends to the whole population/production.
Out the practice grew the three main areas in statistics when working with data:
- The collection of it
- The organisation of it
- The drawing of inferences from it
Let us see each part in more detail
Sampling: the standard way to collect data
In sampling we do not simply gather data. We try to make sure, as much as possible, that the data we gather are representative of the whole population. Without this precondition no amount of technical sophistication will produce correct results. If, for example, measure people's height outside of a basketball court, we will not get a representative sample of the population. and subsequently fail to estimating the height of the population.
describe
Once we have our sample, the next thing to do is to use descriptive statistics in order to summarise the data and describe its main features. This is also called exploratory data analysis. It is our effort to a first systematic look at the data. We start first by looking at each variable we have and try to verify that it conforms to the its standard. We go on looking at the possible relationships among the variables. In doing so, we use a lot of plots, but also numerical summaries of the data. That's where some of the mathematical concepts of the probability distributions, and their characteristics, the mean and standard deviation, concepts like correlation, enter the picture.
infer
The third stage, after having a sample and an initial picture of the data, is drawing inferences. The usual process is to formulate a hypothesis - say that the true mean of the population is zero, compute the relevant statistic from the sample - in that case the sample mean, and then using the theory, try to infer whether the population mean is indeed zero or not. That's the fundamental concept in statistics: compute a fact about the sample, and try to guess the truth about the population.
using the computer
In the past inferential statistics rested heavily on theoretical notions. With the computer we have developed computational techniques to draw inferences while relaxing the assumptions necessary for the theory to work. We will make a comparison between classical inference and the bootstrap method in order to demonstrate the difference.
A central concept in statistics is the sampling distribution. Imagine a population that has a characteristic, say average height. If we draw a random sample from the population, this sample will have an average height, that might or might not be close to the population average height. If, thought, we take many samples from the population and write down the average height for each sample, then these average heights follow a distribution of their own, with a mean, close to the true mean of the whole population. This is the sampling distribution and usually it follows the normal distribution. The sampling distribution is fundamental for taking the next step, to relate the sample to the population.
In traditional statistics, we do not know what the true population mean is, and we cannot draw many samples. We only have one. Then we rely on the theory, the central limit theorem, to assume the form of a hypothetical sampling distribution, that we will then use for the practice of inference.
There are certain cases though, that the theory will not work. In these cases we are left with only a sample. The computer then comes to the rescue. In order to approximate the sampling distribution we repeatedly draw samples with replacement, from our initial sample. It turns out that the distribution of the bootstrapped samples can be used for inference.
This is an example of how computation can substitute for theory.
statistics in data science
In data science we make use of statistics; directly using ideas in exploratory analysis and the whole machinery of probability distributions and other concepts, and indirectly as a basis for statistical learning - a big part of Machine Learning.
Machine Learning is different compared to statistics: 1- Data are not carefully produced, therefore, many of the techniques developed in traditional statistics do not work 2 - With the computer we can manipulate the data in other ways apart from those that fit into a mathematical context.
That does not mean statistics is irrelevant to Data Science; on the contrary the lessons learnt in the former can be really helpful with the latter. Think for a moment a situation that does happen with data analysis. In the presence of a big data set we might want to work on a smaller part. If we are not careful enough to draw a random sample, then we will not find interesting patterns that are indeed in the whole data set, and we might 'find' pattern in our sample that are simply non existent in the data set. Using a statistically savvy mindset, can protect from a lot of traps waiting for the unwary data analyst
sources:
- Practical Statistics for Data Scientists: 50 essential concepts
- Naked Statistics
- Think stats
- Introduction to the practice of statistics


Manny Pacquiao sets comeback date as Amir Khan states he still wants fight
Manny Pacquiao is plotting his return to the ring - and the dates could fit in with a chance to finally fight British superstar Amir Khan
by Rich Jones, https://www.mirror.co.uk/authors/rich-jones/Manny Pacquiao has his eyes set on a return to the ring in March or April 2020 - with Amir Khan still keen on being his opponent.
Pacquiao outpointed the previously unbeaten Keith Thurman with a vintage display in July before turning his attentions back to his political duties in the Philippines.
With the Senate in recess between March 14 and May 3, Pacquiao is targeting his next fight, with MP Promotions chief Sean Gibbons confirmed he is expected to fight "in the first quarter" of 2020.
Pacquiao has now spoken out on his plans, telling the Manila Bulletin: “I can fight in March, April because the Senate will be on break during that time."
Before his fight with Thurman, Pacquiao was tipped to take on British star Amir Khan, who claimed a super fight between the pair had already been agreed.
Khan later backtracked on those claims, stating he had been wrongly informed contracts were signed by his team.
But he revealed in a recent interview with IFL TV that he is targeting a huge name such as Pacquiao or Mayweather, with a long-touted showdown with British rival Kell Brook his plan B.
After The Bell: Watch Mirror Fighting's new boxing show
Mirror Fighting has launched a new weekly boxing show in association with Betfair in which we analyse the latest big fights, play matchmaker, and preview forthcoming bouts.
Former super-middleweight world champion George Groves provides expert analysis.
To watch the latest show in full, click here.
“Manny Pacquiao or [Floyd] Mayweather or someone big like that,” said Khan to IFL TV when asked who he wants to fight in 2020. “I want to be back out in March next year. A few fights we’re looking at. The Kell Brook fight.”
Khan, who last fought against Billy Dib in Saudi Arabia earlier this year, stated he does not see Mayweather coming out of retirement to fight again.
And timings with his planned return in March fit in with Pacquiao's schedule, which could mean it is in contention to happen.
Other potential opponents for Pacquiao include Mikey Garcia, Danny Garcia, Shawn Porter and several others.
Errol Spence, the IBF and WBC king, was tipped for a unification bout with WBA champion Pacquiao but his recovery form a serious car accident could rule the fight out.


The Summerhouse pub pays homage to Hollywood with new Christmas lights display
A pub well known for its Christmas lights has launched a new theme for 2019 which should be a hit with movie fans.
by Jamie BrassingtonThe Summerhouse Pub, in Gospel End Road, near Sedgley, has been intricately decorated with props hinting to iconic films.
The roof features figures of ET and Elliot, from the 1982-movie E.T. the Extra-Terrestrial.
Elsewhere in the pub grounds, there is a 10ft figure of Olaf, from the 2013-hit film Frozen, characters from the film series Toy Story, Indiana Jones and Mary Poppins.
Past themes have included Disney movie.
The pub is well known for its extravagant display of Christmas decorations each year, with the owners going the extra mile to put on a show.
Karen Kennedy, 44, who runs the pub alongside her husband Philip, said: "Putting on these decorations just promotes a good sense of community spirit.
"This place is a bit of a Christmas pub. I think everyone around here expects us to put on the decorations.
"We also raise money for a good cause - for the Heartlink Children's Charity that saved our daughters life, Zoe (13), when she was born."
A lot of effort goes into decorating The Summerhouse each year, and preparations began back in September.
More than 20,00 bulbs are used to light up the decorations, however the cost is relatively cheap, as the owners used LED lights.
Karen has asked customers to donate money when they visit the pub, with a wishing well located outside and charity buckets inside.
Writing on the pub's Facebook page, she said: "We would be immensely grateful if you would throw a coin or two in the wishing well outside or in any of the charity buckets around the building. Thank you and Merry Christmas!"


A small unobtrusive responsive css grid.
Vuri leverages HTML's data attributes to make a clear distinction between your styles and the grid. Most grid frameworks need you to mix in class names etc. With Vuri you tag the attribute with a data attribute instead. Like so and vuri makes that element part of the grid
A simple grid that only has two breakpoints.To use this font family on a website, create a new kit or add the family to an existing one. Once you’ve added all the fonts you need to your kit, you can publish and then add it to your website with a simple embed code. Learn more about web use.


The page you were looking for doesn't exist
(Error 404)
You may have mistyped the address or the page may have moved.
Go back to the
Teams App →


This command launches the
Import Dialog Box
. From here you can select various types of data to import into the Ameol database or into other functions of Ameol, such as the address book.


<learningSummary>
A Learning Summary topic recaps and provides context for the achievement or accomplishment of learning objectives, provides guidance to reinforce learning and long-term memory, and may pose questions to enhance encoding and verification of the learning content.
Category: Learning and training: topic elements


;
Module Project: React-UI-Components - Lambda Calculator
In this module project you will build your very own calculator app. You have been provided with a file structure and suggested pattern for constructing your components. Be sure to connect all necessary files and pass the data using the techniques from the module.
Instructions
Read these instructions carefully. Understand exactly what is expected before starting this project.
Commits
Commit your code regularly and meaningfully. This helps both you and your team lead in case you ever need to return to old code for any number of reasons.
Description
In this project you will build out a calculator using React. You have been given a design file to follow, and a data file to include for your button components to display.
Project Set Up
This project was put together using create-react-app (CRA). You will not need to install CRA in order to make this project work. Follow the steps below to setup the project with the proper dependencies.
-
[X] Create a forked copy of this project.
-
[X] Add your team lead as collaborator on Github.
-
[X] Clone your OWN version of the repository in your terminal
-
[X] CD into the project base directory
cd lambda-calculator
-
[X] Download project dependencies by running one of these two commands
yarn
or npm install
-
[X] Using the same command tool (yarn or npm) start up the app using
yarn start
or npm start
-
[X] Create a new branch: git checkout -b
<firstName-lastName>
. Implement the project on your newly created <firstName-lastName>
branch, committing changes regularly.
-
[X] Push commits: git push origin
<firstName-lastName>
.
Follow these steps for completing your project.
-
[ ] Submit a Pull-Request to merge Branch into master (student’s Repository). Please don’t merge your own pull request
-
[ ] Add your team lead as a reviewer on the pull-request
-
[ ] Your team lead will count the project as complete by merging the branch back into master.
-
[X] Do your magic!
Project - Lambda Calculator
A job just came down from the Big Boss!
-
[X] A prospective client has tasked you with building a calculator app. They need you to build the app using the file structure and component wire frame provided.
-
[X] Get all necessary files connected and either taking in or sending out data.
-
[X] The design file should be followed as close as possible but doesn’t have to be pixel perfect - budget your time wisely.
-
[X] The client will provide their own proprietary calculator software so your app only needs basic functionality, enough for a demo.
Directions
Using the design file, build out your User Interface. Before you start, look through the app structure to see what components you have to work with, then you’ll start by following the steps below.
STEP 1
-
[ ] You have been given a Data.js file that contains some arrays.
-
[ ] Find a way to bring (import) the data into the necessary files, but do not change the data.
-
[ ] Data should be imported into the wrapper components (
Numbers
, Operators
, and Specials
)
Step 2 Add the data to state like this:
Step 3
-
[X] Map over the data and dynamically render components for each piece of data in the arrays.
-
[X] You will need to import the component that you’ll render in the map function.
STEP 4
-
[X] Import the wrapper button components into
App.js
-
[X] Import the display components into
App.js
as well
-
[X] Compose all the components inside the
App
component to get your calculator rendering on the DOM
STEP 5 - (STRETCH) - [X] In each component, start designing things to match the design file - [X] Style your project using any of the techniques from the module - [ ] Don’t forget about className vs class on your JSX elements!!
It’s time to start thinking about functionality. Before getting into this, let’s try and plan out all the moving pieces you’ll need.
You will have some state in App
that will keep track of the totals. This is data that you’ll pass to the display component to render in the display.
You’ll also have some functions in App
that run your calculations and update the totals state you’re storing. You’ll pass these functions down to the different button components as props. The button components will use onClick
to invoke these functions and pass in the correct data, whether that’s a number or an operator.
Okay. Hands on keyboard. Let’s do this!
This is where you’re JavaScript skills are really going to be stretched. Remember to use the 20 minute rule. Google will be your best friend!
MVP Requirements:
-
[X] Get at least one set of buttons(numbers, operators, or special buttons) to reflect the design spec.
-
[X] Use the state hook function to get the app to display some data.
Here is your design spec:
Pro Tips:
-
Plan your app before writing any code. How many components will you be using? And how will they fit together?
-
Where will your data be stored in state? Which components need to receive that data via props?
-
What functions do you need? Where will the function live (if it updates state in a component, it needs to live in that component)? Will it be invoked in a different component? If so, pass it as props!
-
If you’re unsure how to proceed, review the TK, google, use the help channel
-
There are plenty of examples of calculator logic available, but try writing on your own. And don’t worry if it isn’t fully functional, you’ll have time come back to it and get it working. It’s actually a really fun exercise to work on in small increments over time.
-
Most important have fun!!!
Stretch Problems
Do not attempt stretch problems until MVP has been reached and a final commit has been made.
-
[X] STEP 5 from above
-
[ ] Finish the logic so the calculator is fully functional. Feel free to change the array data, or lose it entirely, as you see fit.
-
[X] Finish styling all of the buttons and get your calculator to closely resemble the given design spec.
-
[ ] Add some icons to improve the operator characters aesthetics. Research any icon/font library and implement it into your project.
-
[ ] Convert your CSS styling to use Sass/Scss


- Meditation Instructions:
- Unmute the the song below.
- Set a timer to hold space for the duration of practice.
- Find a comfortable position.
- Bring your attention to your breath (option to close eyes).
- Inhale, feel your belly rise and ribs expand.
- Exhale, fully and completely, allow your lungs to empty.
- Continue this deep belly breathing as your awareness shifts to the song.

- With consistent practice, your focus will grow stronger.
- When your timer brings you to the end of your practice, take a moment of gratitude for showing up for yourself today.


The Signature, expires parameters in request are getting expired after certain time ("the epoch"). Also, I'm unable to use the JS to dynamically generate the Signature for changing the title of content. However, it can be also be done by using scratch-pad with this set-up or any with client size application (Python or Java).
I'll try to create a python script file that should fetch the content title (at index zero) and update it.
with regards to disabling the email icon from the player UI. I don't see the 'share mail' button in any of the player components (screen-shot). I do see that this element is mentioned in the API documentation as a player component (screen-shot). If I'm missing on something while creating player, then this case an be changed using patch.


Local Stories
Happenstance and serendipity applied to information
Connected Productions
ABOUT YOU
ABOUT YOUR INTERESTS
OUR ACTIVITIES
Consulting
Easy deal
bundle offer
Co-working
Agile teams
Scalable abacus
Strategic knowledge to
Happenstance and serendipity
Teams organisazation
Network of the value chain
Network of the channels
Easy entreprise management
Transportation 3.0
Gamification
Connected productions
Systems integration
Cloud solutions
Virtualization work environment
Recycling of IT activities
IT achievements
Digital developments
Entreprise workflows
Search and indexing
Entreprise mashup
Connected objects
Research areas
Happenstance and serendipity
Social and environmental responsibility
Teams organisazation
3D print
IT Security and freedom
Game startups
Design your game - Sharing experience first
Add Customer segments
Add Value Proposition
Add Market Places
Modeled your key activities - Information from key partners
Add Key activities
Add Key resources
Transportation is a media
Affine your storytelling - Be natural
About you
About your RSE
About your customers
Easy management - Find connected Resources
Key activities and value informations
Key connected production resources
Your dashbord
3D Print your business model - Connected Workflows objects
Innovation's games
3D Print offer
Productions connected
Model your production
Connect your production
CATEGORIES


Memory
{% for line in memory %} {{ line.decode('utf-8') }} {% endfor %}
CPU
{% for line in sar %} {{ line.decode('utf-8') }} {% endfor %}
Load
{% for line in uptime %} {{ line.decode('utf-8') }} {% endfor %}


Creates a new Color4 object from red, green, blue values, all between 0 and 1
defines the red component (between 0 and 1, default is 0)
defines the green component (between 0 and 1, default is 0)
defines the blue component (between 0 and 1, default is 0)
defines the alpha component (between 0 and 1, default is 1)
Defines the alpha component (between 0 and 1, default is 1)
Defines the blue component (between 0 and 1, default is 0)
Defines the green component (between 0 and 1, default is 0)
Defines the red component (between 0 and 1, default is 0)
Creates a new array populated with 4 numeric elements : red, green, blue, alpha values
the new array
Creates a new Color4 copied from the current one
a new Color4 object
Updates the Color4 from the sparsely populated value.
The sparsely populated value to read from.
Copies the given float values into the current one
defines the red component to read from
defines the green component to read from
defines the blue component to read from
defines the alpha component to read from
the current updated Color4 object
Returns the string "Color4"
"Color4"
Compute the Color4 hash code
an unique number that can be used to hash Color4 objects
Creates a new Color4 with the current Color4 values multiplied by scale
defines the scaling factor to apply
a new Color4 object
Copies the given float values into the current one
defines the red component to read from
defines the green component to read from
defines the blue component to read from
defines the alpha component to read from
the current updated Color4 object
Stores from the starting index in the given array the Color4 successive values
defines the array where to store the r,g,b components
defines an optional index in the target array to define where to start storing values
the current Color4 object
Computes a new Color4 converted from the current one to gamma space
a new Color4 object
Compute the Color4 hexadecimal code as a string
a string containing the hexadecimal representation of the Color4 object
Returns a JSON representation of this color. This is necessary due to the way Actors detect changes on components like the actor's transform. They do this by adding properties for observation, and we don't want these properties serialized.
Computes a new Color4 converted from the current one to linear space
a new Color4 object
Creates a string with the Color4 current values
the string representation of the Color4 object
Check the content of a given array and convert it to an array containing RGBA data If the original array was already containing count * 4 values then it is returned directly
defines the array to check
defines the number of RGBA data to expect
an array containing count * 4 values (RGBA)
Creates a new Color4 from the starting index element of the given array
defines the source array to read from
defines the offset in the source array
a new Color4 object
Creates a new Color4 from the string containing valid hexadecimal values
defines a string containing valid hexadecimal values
a new Color4 object
Creates a new Color3 from integer values (< 256)
defines the red component to read from (value between 0 and 255)
defines the green component to read from (value between 0 and 255)
defines the blue component to read from (value between 0 and 255)
defines the alpha component to read from (value between 0 and 255)
a new Color3 object
Creates a new Color4 object set with the linearly interpolated values of "amount" between the left Color4 object and the right Color4 object
defines the start value
defines the end value
defines the gradient factor
a new Color4 object
Set the given "result" with the linearly interpolated values of "amount" between the left Color4 object and the right Color4 object
defines the start value
defines the end value
defines the gradient factor
defines the Color4 object where to store data
Class used to hold a RBGA color


A.mphibio.us
Pagination
<menu role="navigation">

First

1

2

3

4

5

...

Last

 <input type="text"> <button type="button" class="button">Jump</button>

 </menu>
Filter Nav
<menu role="navigation">

Filter by:

Option 1

Option 2

Option 3

 </menu>
Button Group
<menu role="navigation">

Prev

Next

 </menu>
Modals
There are two flavours and three sizes of modal boxes included with the mergini framework application modals and inline modals, application modals activate an empty container and the foot of the mergini application and take over the whole screen with a blur effect, inline modals are ones you build inside your application and call as neccessary and do not include the blur and focus functions.
Inline Modals
Inline modals are pretty easy to implement simply add the a.mphibio.us listener class modal_opener and assign the element an amp-target attribute the id of the modal you want to launch.
Closing a modal is just as simple;assign the button, link, or icon the listener modal_kill and the proper amp-target attribute and it's gone.
<button class="modal_opener" amp-target="launcher_modal">Sample Modal Opener</button>

Modal Header

 ...
  <fieldset class="form-actions"> <button id="eventDetailActionBtn" type="button" class="">Action</button> <button type="reset" class="modal_kill cancel" amp-target="launcher_modal">Cancel</button> </fieldset>

Sample Modal Opener
Modal Sizing
Modals are designed to be fluid the default width of the modal is 90% of the screen width up to a maximum width of 940px, a minimum width of 660px and the height grows according to the content within them.
Adding the class(es) small or medium to the modal either in your source code or dynamically will change the width of the modal to a width of 200px or 30% of the screen for small and 400px or 60% of the screen width.
Dialogues
A.mphibio.us has some default messaging dialogue boxes available for user feedback assign anyone of the following classes to a container and have consitant feedback elements. Or add and remove these classes to a feedback container as part of your user error handling techniques. They can contain any kind of html.

Sample Error message

Sample Attention message with icon

Title
Sample Attention message with icon

Title

Sample Attention message with icon


Learn more about my passions for technology, my obsessive dedication for learning the process, and how I like to accomplish every project.
In search of dedicated team player with preciscion programming. Take a look at my journey from the start to now.
High value content, write ups, and imaginiative projects. Take a look through my collections.


Issue #02 focuses on what it means to be a collective within a united Europe. Launched in January 2021.
Copier Coller Club
Action Hero
Marius Jopen
Girls To The Front
Implied Gallery
Join The Cool
It's Time To Go People
Subbacultcha
Chika Collective
Protest Press
Radiations
Sonder
Amrit Sandhu
Action Hero
Marius Jopen
Girls To The Front
Implied Gallery
Join The Cool
It's Time To Go People
Subbacultcha
Chika Collective
Protest Press
Radiations
Sonder
Amrit Sandhu
Issue #01 showcases projects made possible through the Erasmus scheme and a united Europe.
Launched 27–28th September 2019 at Art Hub Gallery in Deptford, London.
Charlotte Allen
Olive Ashford
Kitty Bazalgette
Nathaniel Brown
Paulius Daunys
Harriet Davey
EUnited
Holly Greaves
Rachel Hagan
Francesca Harvey
Eloise Knights
Cecily Loveys Jervoise
Souvenir Official
Alice Pandolfo
Frankie Parham
Tabatha Pearce Chedier
Freya Pigott
Beau Scarlett-Pitt
Eddie Smith
Madi Swain
Inès Verdue
Dougal Verinder Gedge
Olive Ashford
Kitty Bazalgette
Nathaniel Brown
Paulius Daunys
Harriet Davey
EUnited
Holly Greaves
Rachel Hagan
Francesca Harvey
Eloise Knights
Cecily Loveys Jervoise
Souvenir Official
Alice Pandolfo
Frankie Parham
Tabatha Pearce Chedier
Freya Pigott
Beau Scarlett-Pitt
Eddie Smith
Madi Swain
Inès Verdue
Dougal Verinder Gedge


Hello
,
Mike
.
0 to do
Todo
Completed Tasks
Last 7d
Last 30d
Last 90d
All time
0 completed
Completed


Hi! Welcome to the Cutting Coop.
The weather outside is: {{outsidecondition}}
The temperature in the coop is: {{ internaltemperature }} degrees F
The temperature outside the coop is: {{externaltemperature}} degrees F
Sunrise is at:{{sunrise}}
Sunset is at:{{sunset}}
Heater is {{heaterPctOut}}%
Lights are {{lightPctOut}}%
Door is {{doorStatus}}


Nairobi
Nairobi originally was known as the place of "sweetwater"
People in the olden days used to migrate from one place to another looking for sources of fresh water
Since then Nairobi has become very industrialized and very densely populated
Reasons for Nairobis Industrialization and Dense population density
- Tourism- Kenya has been known for its wildlife and Nairobi is the only city that has a national park inside of it
- Here, you can see for yourself
- High Employment Rates- Many migrate from rural life to search for employment in Nairobi
- Nice Weather-Nairobi has been voted to have one of the best weathers in the world


--- title: Date Picker description: Insert description layout: layout-sidenav category: general react-link: ?path=/docs/components-datepicker--default-story github-link: true toc: true published: false ---


Mireka documentation
Contents
- Quick Start - Trying Mireka without installing
- Installation
- Basic Configuration
- Directory layout
- Configuration files
- SMTP service
- Message Submission Service
- Logging
- Realtime graphing and monitoring with Graphite
- Monitoring and management via JMX
- Filters
- Postmaster mail copies
- Developing custom components
Appendix


MVP for international group, beginning with Australian users. Small changes will need to be made to landing screen, entry to service, invitation code, lived/worked, time lived/worked, contact details, bank account details, declaration, completion screens and document request.
This first prototype for international claimants, closely based on the UK journey, tested fairly well with overseas users. The research highlighted a few small issuers and one large one. The biggest issue was the living/working abroad pages. These have never worked well for UK users and with international users, who were unable to enter multiple occasions in the same country, they completely failed. Smaller issues around specificity of content and messages about post boxes and changes of circumstances were also picked up. The biggest change from the UK prototype, the bank details page, tested well, with users happy to see they were not limited to a specific account number length or bank code format.
Start now


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I Will Never Let You Down
Rita Ora
Directed by Francesco Carrozzini
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