# Immutable update patterns in React and Redux
---
## Nitish Kumar
### twitter: @nitishk88
-----
# How to compare objects?
*Reference Equality* and *Value Equality*
var x = 12,
y = 12;
var object = { x: 1, y: 2 };
var object2 = { x: 1, y: 2 };
object === object2 // false
* `object` and `object2` are the same in terms of values
* but they are not the same in terms of reference
If you think about equality of things, you can in fact think about two things:
*does a thing mean the same as the other thing?*
*is a thing exactly the same thing as the other thing?*
-----
# Continued...
When you compare objects in JavaScript, they are compared by a reference. That means
the equality check like this:
object === object2
Answers the question: Is `object` the same object as `object2`? In fact, when you assign
an object to variable x, you assign a reference of an object to variable x.
object = object2;
object === object2; // true
-----
# Continued...
This has some interesting consequences.
object.x = 12;
object.x; // 12
object2.x; // 12
In this case, you did assign x key of an object `object`. But since `object` and `object2` points to the same reference, the change is visible through both variables.
Every complex data structure in JavaScript follows the principles of reference equality. This includes arrays and objects. In fact, arrays are objects too:
typeof([1,2,3]) // "object"
-----
# Value Equality
Value equality answers the question: Does a thing means the same as the other thing?
var object = { x: 1, y: 2 };
var object2 = { x: 1, y: 2 };
valueEqual(object, object2) === true
Implementing such equality would be harder with nested data structures. Objects can have arbitrary keys and values.
It can contain other objects within them. To make such equality for objects, you’d need to follow the following algorithm:
-----
# Continued...
// Input: an object1 and object2
// Output:
true if an object1 is equal in terms of values to object2
valueEqual(object1, object2):
object1keys = <list of keys of object1>
object2keys = <list of keys of object2>
return false if length(object1keys) != length(object2keys)
for each key in object1keys:
return false if key not in object2keys
return false if typeof(object1[key]) != typeof(object2[key])
if object1[key] is an object:
keyEqual = valueEqual(object1[key], object2[key])
return false if keyEqual != false
if object1[key] is a primitive:
return false if object1[key] != object2[key]
return true
For deeply nested structures, it can make hundreds of equality checks to compare two objects.
Such equality checks are commonly called [deep equality checks](https://github.com/lodash/lodash/blob/master/.internal/baseIsEqualDeep.js).
-----
# Get rid of mutations
*Whenever your object would be mutated, don’t do it. Instead, create a changed copy of it*
You can use:
* Object.assign({}, ...)
* [].concat
* ... operator
* External libraries (Immutable.js, Icepick, etc)
-----
# Not using an external library?
* Pros
* Seemless interoperability with JavaScript
* Suitable for small and simple JavaScript objects
* Easy to debug
* Cons
* Performance issues for big datasets
* Tedious and harder to read code when doing nested updates
* Accidental direct mutations
-----
# Using Immutable.js?
* Cons
* Difficult to interoperate with. For example, instead of `myObj.prop1.prop2.prop3`, you would use `ImmutableMap.getIn([‘prop1’, ‘prop2’, ‘prop3’])`
* Can spread throughout the codebase, as the codebase must know what is, and what is not, an Immutable.JS object
* Difficult to debug
* No Destructuring or Spread Operators
* Not suitable for small values that change often
-----
# Continued...
* Pros
* [Persistent data structures and structural sharing](https://medium.com/@dtinth/immutable-js-persistent-data-structures-and-structural-sharing-6d163fbd73d2)
* Optimized for large datasets and objects
* Mitigates accidental mutations
* Works great if some [opinionated best practices are followed](https://redux.js.org/docs/recipes/UsingImmutableJS.html#what-are-some-opinionated-best-practices-for-using-immutablejs-with-redux)
-----
# Immutability and React.js
* When state changes, component re-renders. React can’t assume anything about your state. That’s why setting state
always re-renders the component - even if it’s not necessary at all, as React [doesn't deeply compare props/state by default](https://reactjs.org/blog/2016/01/08/A-implies-B-does-not-imply-B-implies-A.html)
* For a complicated state (nested objects), you'd be forced to make a deep equality check,
because when objects are compared using reference equality you can’t be sure whether the next state is changed. *So
if you want to optimize React to perform updates only when necessary, you would need to make hundreds of value equality checks if your state is huge*
-----
# shouldComponentUpdate?
It is a lifecycle optimization method which allows your Component to exit the Update life cycle if there is no reason to apply a new render
* Out of the box, the shouldComponentUpdate() is a no-op that returns true
* Implementation for Pure React components
function shallowEqual(objA: mixed, objB: mixed): boolean {....}
function shallowCompare(instance, nextProps, nextState) {
return (!shallowEqual(instance.props, nextProps) || !shallowEqual(instance.state, nextState));
}
shouldComponentUpdate: function(nextProps, nextState) {
return shallowCompare(this, nextProps, nextState);
}
-----
# Continued...
`shallowCompare` uses `===` to compare objects. If current state is mutated for a Pure Component, it will return `true` resulting in no re-render.
This is why [Redux](https://redux.js.org/docs/introduction/ThreePrinciples.html#changes-are-made-with-pure-functions) requires pure methods for reducers. If you need to change nested data you have to clone the objects and make sure a new instance is always returned.
This allows for shallowCompare() to see the change and update the component.
Usage of **Immutable.js** enforces immutability. We can leverage `shouldComponentUpdate()` and have it verify that props and state have changed.
-----
# As per Redux docs
The process of correctly applying immutable updates to deeply nested state can easily become verbose and hard to read.
Here's what an example of updating `state.first.second[someId].fourth` might look like:
function updateVeryNestedField(state, action) {
return {
...state,
first : {
...state.first,
second : {
...state.first.second,
[action.someId] : {
...state.first.second[action.someId],
fourth : action.someValue
}
}}}}
-----
# A nice API please
**Note**: Interoperable with JavaScript
import { setIn } from "somewhere"
function updateVeryNestedField(state, action) {
const newState = setIn(state, `first.second[${action.someId}].fourth`, action.someValue)
console.log(state === newState) // false
return newState
}
import { deleteIn } from "somewhere"
function deleteVeryNestedField(state, action) {
const newState = deleteIn(state, `first.second[${action.someId}].fourth`)
console.log(state === newState) // false
return newState
}
*[More test cases](https://github.com/nitishkr88/redux-immutable-ops/blob/master/src/plain/__tests__/setIn.spec.js).....*
-----
# redux-immutable-ops
* [npm](https://www.npmjs.com/package/redux-immutable-ops)
* [github](https://github.com/nitishkr88/redux-immutable-ops)
# Thank you
References:
* https://redux.js.org/docs/recipes/reducers/ImmutableUpdatePatterns.html
* https://medium.com/@dtinth/immutable-js-persistent-data-structures-and-structural-sharing-6d163fbd73d2
* http://reactkungfu.com/2015/08/pros-and-cons-of-using-immutability-with-react-js/
* [redux-immutable-ops](https://github.com/nitishkr88/redux-immutable-ops)


Proof of Burn Minting Guide
Burning is the distinctive feature of Slimcoin. Here you find a guide how to earn Slimcoins by burning.
 When the system detects that you burnt coins, your address gets a score called Effective Burnt Coins that determines your chance to find blocks. This score is higher if you burnt more coins.
Don’t be afraid to burn too few coins - you can always rise your score burning more coins from the same address.
While burning, you not only can get rewards but also help regulating the money supply. Learn more about Proof of Burn in our simple explanation.
Note: The Effective Burnt Coins score decreases (“decays”) a little bit every block to avoid attacks by early adopters and to mimic the aging of mining equipment, but the score is positive for over one year for every coin you burnt. So you have plenty of time to benefit from your burnt coins.
Requirements
You need a Slimcoin client (graphical client or daemon) and some Slimcoins. That’s all! No mining equipment or other hardware is required.
To have chances to find blocks regularly, you should burn at least 100, or better 1000 Slimcoins.
Important: If you wallet is encrypted, you must unlock it to be able to mint. In the graphical client, you should use the following command in the console (Help -> Debug window -> Console tab):
walletpassphrase PASSPHRASE TIME
In the daemon, you unlock it with the following RPC command:
slimcoind walletpassphrase PASSPHRASE TIME
PASSPHRASE being your passphrase and TIME the time it should be unlocked (in seconds). If you want to unlock it indeterminately simply choose a large number, e.g. 999999999.
Burning with the graphical client
In the graphical client, a graphical item called Burn Coins is provided which makes it very easy to burn coins. It is accessible from the main window or via the Tools menu.
Simply enter the amount you want to burn in the window that appears and click OK. Wait until the burnt coint have matured and then you will receive rewards every time you find a block.
Note. Burning normally costs a transaction fee of 0.01 Slimcoins per kilobyte, like all transactions. Sometimes, if the transaction is very large because you use many inputs, the client will tell you that he will add a higher fee for this transaction.
Burning with the daemon
With the daemon it’s also very easy to burn.
Simply type the following command in the terminal:
slimcoind burncoins AMOUNT
being AMOUNT the amount in entire Slimcoins. (You also can use this command in the Debug console in the graphical client).
Get information about burning
With the following command you get some basic information about the state of the Proof of Burn system:
slimcoind getburndata
You get the following indicators:
- Net Burnt Coins is the total amount of coins you have burnt.
- Effective Burnt Coins is your score: it is the number of coins you burnt minus the decayed burnt coins.
- Inmature Burnt Coins are coins you burnt but still haven’t matured. The maturing period is XX blocks.
-
Decayed Burnt Coins is the amount of coins being deducted from your score (see above) to avoid early adopter attacks and make burning fairer.
- Formatted nEffectiveBurnCoins is the sum of the “Effective Burnt Coins” score of all acounts together. It is a rough measure to calculate the amount of coins you have to burn if you want to find blocks regularly: the higher this value, the higher the amount of coins you should burn.
- nEffectiveBurnCoins is another way to display the Effective Burnt coins score.
- nBurnBits is a technical term referring to the burn hash target stored in the current block (for details, see the Whitepaper).
- General info is probably not being used actually.
How many coins have been burnt until today?
You could think the Formatted nEffectiveBurnCoins number is what you need, but it is not - because this number does not contain the Decayed Burnt Coins and is probably much smaller.
To see the real number you must check the burn address. In the built-in block explorer of the client or any other block explorer (e.g. Slimcoin.club, enter the following address:
SfSLMCoinMainNetworkBurnAddr1DeTK5
In May 2016, the address had roughly a balance of 1,8 million Slimcoins; at that time that were about 12% of the total supply of 14 million.


A collections of thoughts on behavoir management in schools, teacher experiences, and BipHub developement.
Biphub, huh?


Base extension point for paket plugins.
| Type Params | Return Type | Name and description |
|---|---|---|
|
PaketPluginExtension |
bootstrapperExecutable(java.lang.Object fileName) Sets the boostrapper executable path |
|
PaketPluginExtension |
executable(java.lang.Object executable) Sets the paket executable path |
|
java.io.File |
getBootstrapperExecutable() Returns the path to the bootstrapper executable |
|
PaketDependencyHandler |
getDependencyHandler() |
|
java.io.File |
getExecutable() Returns the path to the paket tool executable |
|
java.lang.String |
getMonoExecutable() Returns the file path to mono executable as String. |
|
java.lang.String |
getPaketBootstrapperUrl() Returns an URL string to the bootstrapper download location |
|
PaketDependencies |
getPaketDependencies() Returns the content of paket.dependencies parsed as PaketDependencies object. |
|
java.io.File |
getPaketDependenciesFile() Returns the java.io.File path to the paket.dependencies file within the project. |
|
java.io.File |
getPaketDirectory() Returns the {@File} path to the paket directory. |
|
java.io.File |
getPaketLockFile() Returns the java.io.File path to the paket.lock file in the project. |
|
java.lang.String |
getVersion() Returns the paket version to use. |
|
PaketPluginExtension |
monoExecutable(java.lang.Object path) Sets the path to mono executable |
|
PaketPluginExtension |
paketBootstrapperUrl(java.lang.Object url) Sets the bootstrapper download URL |
|
PaketPluginExtension |
paketDirectory(java.lang.Object directory) Sets the path to the paket directory. |
|
void |
setBootstrapperExecutable(java.lang.Object fileName) Sets the boostrapper executable path |
|
void |
setExecutable(java.lang.Object executable) Sets the paket executable path |
|
void |
setMonoExecutable(java.lang.Object path) Sets the path to mono executable |
|
void |
setPaketBootstrapperUrl(java.lang.Object url) Sets the bootstrapper download URL |
|
void |
setPaketDirectory(java.lang.Object directory) Sets the path to the paket directory. |
|
void |
setVersion(java.lang.Object version) Sets version for the paket binary. |
|
PaketPluginExtension |
version(java.lang.Object version) Sets version for the paket binary. |
Sets the boostrapper executable path
Sets the paket executable path
Returns the path to the bootstrapper executable
Returns the path to the paket tool executable
Returns the file path to mono executable as String.
This value won't be used on windows.
Returns an URL string to the bootstrapper download location
Returns the content of paket.dependencies
parsed as PaketDependencies object.
paket.dependencies
file Returns the java.io.File path to the paket.dependencies
file within the project.
paket.dependencies
file.Returns the {@File} path to the paket directory.
The .paket
is the place the plugin or the project stores the paket.exe
and paket.bootstrapper.exe
executables.
paket
directory.projectDir/.paket
Returns the java.io.File path to the paket.lock
file in the project.
paket.lock
file in the project.Returns the paket version to use.
This version will be used to load a specific version of the paket binary. When empty, the bootstrapper will load the latest version available.
Sets the path to mono executable
path
- to monoSets the bootstrapper download URL
Sets the path to the paket directory.
The value can be anything that can be converted into a File/file path string.
directory
- the path to the paket directorySets the boostrapper executable path
Sets the paket executable path
Sets the path to mono executable
path
- to monoSets the bootstrapper download URL
Sets the path to the paket directory.
The value can be anything that can be converted into a File/file path string.
directory
- the path to the paket directorySets version for the paket binary.
There is no version validation implemented. The behavior is undefined for invalid input.
version
- the version stringSets version for the paket binary.
There is no version validation implemented. The behavior is undefined for invalid input.
version
- the version string


MdSliderModule
Allows users to select from a range of values by moving the slider thumb. It is similar in behavior to the native `<input type="range">` element.
| Name | Description |
|---|---|
@Input() disabled
|
Whether or not the slider is disabled. |
@Input('thumbLabel')
thumbLabel
|
Whether or not to show the thumb label. |
onTouched
|
onTouch function registered via registerOnTouch (ControlValueAccessor). |
@Input() step
|
The values at which the thumb will snap. |
@Input() tickInterval
|
How often to show ticks. Relative to the step so that a tick always appears on a step. Ex: Tick interval of 4 with a step of 3 will draw a tick every 4 steps (every 12 values). |
tickIntervalPercent
|
The size of a tick interval as a percentage of the size of the track. |
percent
|
The percentage of the slider that coincides with the value. |
@Input() value
|
Value of the slider. |
@Input() min
|
The miniumum value that the slider can have. |
@Input() max
|
The maximum value that the slider can have. |
@Input() invert
|
Whether the slider is inverted. |
@Input() vertical
|
Whether the slider is vertical. |
invertAxis
|
Whether the axis of the slider is inverted. (i.e. whether moving the thumb in the positive x or y direction decreases the slider's value). |
invertMouseCoords
|
Whether mouse events should be converted to a slider position by calculating their distance from the right or bottom edge of the slider as opposed to the top or left. |
trackFillStyles
|
CSS styles for the track fill element. |
ticksContainerStyles
|
CSS styles for the ticks container element. |
ticksStyles
|
CSS styles for the ticks element. |
thumbContainerStyles
|
|
direction
|
The language direction for this slider element. |
@Output() change
|
Event emitted when the slider value has changed. |
A simple change event emitted by the MdSlider component.
| Name | Description |
|---|---|
source
|
|
value
|


Red Player:
Human
negamax
alphabeta
Calc Time in ms:
100
500
5000
20000
Yellow Player:
Human
negamax
alphabeta
Calc Time in ms:
100
500
5000
20000
Number of Games to Play:
Auto Play
One Game at Time
Step Click Between AI Moves
Total Red Wins:
0
Total Yellow Wins:
0
Red Adverage Depth:
0
Yellow Adverage Depth:
0


Previous | Contents | Index | Next
You have a square grid; each square may contain a digit from 1 to the size of the grid, and some squares have clue signs between them. Your aim is to fully populate the grid with numbers such that:
There are two modes for this game, ‘Unequal’ and ‘Adjacent’.
In ‘Unequal’ mode, the clue signs are greater-than symbols indicating one square's value is greater than its neighbour's. In this mode not all clues may be visible, particularly at higher difficulty levels.
In ‘Adjacent’ mode, the clue signs are bars indicating one square's value is numerically adjacent (i.e. one higher or one lower) than its neighbour. In this mode all clues are always visible: absence of a bar thus means that a square's value is definitely not numerically adjacent to that neighbour's.
In ‘Trivial’ difficulty level (available via the ‘Custom’ game type selector), there are no greater-than signs in ‘Unequal’ mode; the puzzle is to solve the Latin square only.
At the time of writing, the ‘Unequal’ mode of this puzzle is appearing in the Guardian weekly under the name ‘Futoshiki’.
Unequal was contributed to this collection by James Harvey.
On Android, please touch for left click and long press for right click. Also note that where this manual refers to pressing a letter on the keyboard, the Android version has icons at the bottom of the screen instead (Control and Shift are not available). There is also an optional "Night mode" which uses darker colours in low light.
Unequal shares much of its control system with Solo.
To play Unequal, simply click the mouse in any empty square and then type a digit or letter on the keyboard to fill that square. If you make a mistake, click the mouse in the incorrect square and press Space to clear it again (or use the Undo feature).
If you right-click in a square and then type a number, that number will be entered in the square as a ‘pencil mark’. You can have pencil marks for multiple numbers in the same square. Squares containing filled-in numbers cannot also contain pencil marks.
The game pays no attention to pencil marks, so exactly what you use them for is up to you: you can use them as reminders that a particular square needs to be re-examined once you know more about a particular number, or you can use them as lists of the possible numbers in a given square, or anything else you feel like.
To erase a single pencil mark, right-click in the square and type the same number again.
All pencil marks in a square are erased when you left-click and type a number, or when you left-click and press space. Right-clicking and pressing space will also erase pencil marks.
As for Solo, the cursor keys can be used in conjunction with the digit keys to set numbers or pencil marks. You can also use the ‘M’ key to auto-fill every numeric hint, ready for removal as required, or the ‘H’ key to do the same but also to remove all obvious hints.
Alternatively, use the cursor keys to move the mark around the grid. Pressing the return key toggles the mark (from a normal mark to a pencil mark), and typing a number in is entered in the square in the appropriate way; typing in a 0 or using the space bar will clear a filled square.
Left-clicking a clue will mark it as done (grey it out), or unmark it if it is already marked. Holding Control or Shift and pressing an arrow key likewise marks any clue adjacent to the cursor in the given direction.
(All the actions described in section 2.1 are also available.)
These parameters are available from the ‘Custom...’ option on the ‘Type’ menu.


Uses of Interface
jakarta.nosql.column.ColumnEntity
-
Packages that use ColumnEntity Package Description jakarta.nosql.column This package contains all objects to use a Column Family API.jakarta.nosql.mapping.column This package contains all objects to use a Column Family API. -
-
Uses of ColumnEntity in jakarta.nosql.column
Methods in jakarta.nosql.column that return ColumnEntity Modifier and Type Method Description ColumnEntity
ColumnEntity. copy()
make copy of itselfColumnEntity
ColumnFamilyManager. insert(ColumnEntity entity)
Saves a Column family entityColumnEntity
ColumnFamilyManager. insert(ColumnEntity entity, Duration ttl)
Saves a Column family entity with time to livestatic ColumnEntity
ColumnEntity. of(String name)
Creates a column family instancestatic ColumnEntity
ColumnEntity. of(String name, List<Column> columns)
Creates a column family instanceColumnEntity
ColumnFamilyManager. update(ColumnEntity entity)
Updates a Column family entityMethods in jakarta.nosql.column that return types with arguments of type ColumnEntity Modifier and Type Method Description Stream<ColumnEntity>
ColumnPreparedStatement. getResult()
Executes a query and return the result asStream
Stream<ColumnEntity>
ColumnQuery.ColumnQueryBuild. getResult(ColumnFamilyManager manager)
Optional<ColumnEntity>
ColumnPreparedStatement. getSingleResult()
Returns the result as a single element otherwise it will return anOptional.empty()
Optional<ColumnEntity>
ColumnQuery.ColumnQueryBuild. getSingleResult(ColumnFamilyManager manager)
Iterable<ColumnEntity>
ColumnFamilyManager. insert(Iterable<ColumnEntity> entities)
Saves a Column family entities, by default it's just run for each saving usingColumnFamilyManager.insert(ColumnEntity)
, each NoSQL vendor might replace to a more appropriate one.Iterable<ColumnEntity>
ColumnFamilyManager. insert(Iterable<ColumnEntity> entities, Duration ttl)
Saves a Column family entity with time to live, by default it's just run for each saving usingColumnFamilyManager.insert(ColumnEntity, Duration)
, each NoSQL vendor might replace to a more appropriate one.default Stream<ColumnEntity>
ColumnFamilyManager. query(String query)
Executes a query and returns the result, when the operations are insert, update and select command it will return the result of the operation when the command is delete it will return an empty collection.Stream<ColumnEntity>
ColumnQueryParser. query(String query, ColumnFamilyManager manager, ColumnObserverParser observer)
Executes a query and returns the result, when the operations are insert, update and select command it will return the result of the operation when the command is delete it will return an empty collection.Stream<ColumnEntity>
ColumnFamilyManager. select(ColumnQuery query)
FindsColumnEntity
from selectdefault Optional<ColumnEntity>
ColumnFamilyManager. singleResult(ColumnQuery query)
Returns a single entity from selectIterable<ColumnEntity>
ColumnFamilyManager. update(Iterable<ColumnEntity> entities)
Updates a Column family entities, by default it's just run for each saving usingColumnFamilyManager.update(ColumnEntity)
, each NoSQL vendor might replace to a more appropriate one.Methods in jakarta.nosql.column with parameters of type ColumnEntity Modifier and Type Method Description ColumnEntity
ColumnFamilyManager. insert(ColumnEntity entity)
Saves a Column family entityColumnEntity
ColumnFamilyManager. insert(ColumnEntity entity, Duration ttl)
Saves a Column family entity with time to liveColumnEntity
ColumnFamilyManager. update(ColumnEntity entity)
Updates a Column family entityMethod parameters in jakarta.nosql.column with type arguments of type ColumnEntity Modifier and Type Method Description Iterable<ColumnEntity>
ColumnFamilyManager. insert(Iterable<ColumnEntity> entities)
Saves a Column family entities, by default it's just run for each saving usingColumnFamilyManager.insert(ColumnEntity)
, each NoSQL vendor might replace to a more appropriate one.Iterable<ColumnEntity>
ColumnFamilyManager. insert(Iterable<ColumnEntity> entities, Duration ttl)
Saves a Column family entity with time to live, by default it's just run for each saving usingColumnFamilyManager.insert(ColumnEntity, Duration)
, each NoSQL vendor might replace to a more appropriate one.Iterable<ColumnEntity>
ColumnFamilyManager. update(Iterable<ColumnEntity> entities)
Updates a Column family entities, by default it's just run for each saving usingColumnFamilyManager.update(ColumnEntity)
, each NoSQL vendor might replace to a more appropriate one. -
Uses of ColumnEntity in jakarta.nosql.mapping.column
Methods in jakarta.nosql.mapping.column that return ColumnEntity Modifier and Type Method Description ColumnEntity
ColumnEntityPostPersist. getEntity()
TheColumnEntity
after be savedColumnEntity
ColumnEntityPrePersist. getEntity()
TheColumnEntity
before be savedColumnEntity
ColumnEntityConverter. toColumn(Object entityInstance)
Converts the instance entity toColumnEntity
Methods in jakarta.nosql.mapping.column with parameters of type ColumnEntity Modifier and Type Method Description void
ColumnEventPersistManager. firePostColumn(ColumnEntity entity)
Fire an event after the response from communication layervoid
ColumnEventPersistManager. firePreColumn(ColumnEntity entity)
Fire an event after the conversion of the entity to communication API model.<T> T
ColumnEntityConverter. toEntity(ColumnEntity entity)
Similar toColumnEntityConverter.toEntity(Class, ColumnEntity)
, but search the instance type fromgetName()
<T> T
ColumnEntityConverter. toEntity(Class<T> entityClass, ColumnEntity entity)
Converts aColumnEntity
to entity<T> T
ColumnEntityConverter. toEntity(T entityInstance, ColumnEntity entity)
Converts aColumnEntity
to entity Instead of creating a new object is uses the instance used in this parametersMethod parameters in jakarta.nosql.mapping.column with type arguments of type ColumnEntity Modifier and Type Method Description <T> T
ColumnWorkflow. flow(T entity, UnaryOperator<ColumnEntity> action)
Executes the workflow to do an interaction on a database column family.
-


Ballerina is a modern programming language designed for writing networking applications.
It targets the integration application developers and make their life easier.
At WSO2, we’re a global community of
working together to build great enterprise software
Ballerina website


For this next section, please refer to your channel analytics.
A couple more things and you're good to go!


Rapid Prototyping In The Browser
Patrick Arlt
Designer/Developer Portland R&D Center – @patrickarlt
## Why Protoype
* Sell ideas to shareholders
* Document what a project will look and function like
* Test concepts and ideas
## Where Prototypes Fall Short
* Not interactive
* Dont represent the styling (ex. Balsamiq)
* Missing important parts (ex. button color)
## Better then wireframes
* Real interactions
* CSS styling
* Head start on frontend work
* Easier to change your mind
## Whiteboard and Sketch
Get all your ideas out as fast as possible
![Wireframe](images/wireframe.png)
## Build Directly in a Browser
Start building in a browser using HTML/CSS/JS
## CSS Frameworks
Using a framework **hugely** accelerates the speed at which you can build a prototype
* [Bootstrap](http://twitter.github.io/bootstrap/)
* [Foundation](http://foundation.zurb.com/)
* [Gumby](gumbyframework.com)
### [Foundation](http://foundation.zurb.com/)
![Foundation](images/foundation.png)
## More Ideas
* [Yeoman](http://yeoman.io/)
* [Angular JS](http://angularjs.org/)
* [Markdown](http://daringfireball.net/projects/markdown/)
* Static Site Generators, [Middleman](middlemanapp.com), [Jeykll](http://jekyllrb.com/), [DocPad](https://github.com/bevry/docpad)
#### [Yeoman](http://yeoman.io/)
![Yeoman](images/yeoman.png)

{{remaining()}} of {{todos.length}} remaining
[ archive ]

<input type="checkbox" ng-model="todo.done">
{{todo.text}}

<form ng-submit="addTodo()">
<input type="text" ng-model="todoText" size="30"
placeholder="add new todo here">
<input class="btn-primary" type="submit" value="add">
</form>

# This is markdown
Its pretty dang simple, it even does things like [Links](http://esri.com).
* It
* Also
* Does
* Lists
![and images](http://myimage.png)
### [Middleman](middlemanapp.com)
![Middleman](images/middleman.png)
## So...
1. Whiteboard and Sketch
2. Leverage Frameworks
3. Prototype in a Browser


{% extends 'base.html' %} {% load static %} {% block title %} Home {% endblock %} {% block content %} Find a job you will love. Position Location Our work locations include: Virginia Florida Colorado Missouri Illinois Trending this month {% for trending in trendings %} {{ trending.title }} {{ trending.company_name }} {{ trending.location }} Posted {{ trending.created_at|timesince }} {% endfor %} Past Performance Click for capabilities {% endblock %}
Our work locations include: Virginia Florida Colorado Missouri Illinois
{{ trending.company_name }}
Posted {{ trending.created_at|timesince }}
Past Performance
Click for capabilities


If you got this error "Unknown error occured, please try again after a while" while login into this website. It's mean your account was temporary block on instagram. Please visit your instagram account you well see a warning message. That your account was login form another location it mean our server was trying to genrate token from your porfile. So you need to click on that's was me. Then login again and you will successfully logged into dashboard.


---
layout: post
title: links for 2007-12-31
date: 2007-12-31 00:00:00
---
-
3 providing very cheap PAYG data rates
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43% click-through is ludicrously good, enough to suggest that it's either pure novelty value or selective use of stats IMHO.
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Aha, saw this presented at PICNIC I think...
-
Ooooh podcasts!


Your data should be -
Comma separated values in a CSV file.
Have the following columns -
participant_id - that refers to the individual users.
timestamp - point in time when the event occurred, in datetime format eg (2017-08-17 19:41:09)
item - button participant has clicked on e.g. play button
action - the result of clicking button e.g. play, pause etc.
Already uploaded file(s): {{ value }}


Lightweight
With a size of less that 25KB
Responsive
With multiple devices in mind
Touch Support
Designed to work on phone as well
Browser Support
Works well on Internet Explorer
Independet
Made with vanilla JavaScript
MIT License
Feel free to customize it to your needs


This is a simple breakout style game at its heart but I wanted to do something slightly different so, for a challenge, I wrote it using a small 3D engine, which I will be using for other projects in the near future.
I've had it tested it across a range of gadgets, so hopefully it will work on whatever hardware you have to hand.
Web browsers have a lot of security features built in, which made it impossible to load images/textures without turning off security features. To get around the cross origin resource sharing restrictions (CORS) when testing locally, I found base64 encoding images to be a workable solution
I've uploaded it here in case anyone else finds it useful. Base64 Encoder Click here
This little project generates unique wordsearches that can be printed out (I've not got round to doing an online version yet).
If you are stuck for ideas or just don't like typing I've provided quite a few word lists to get you started as well.
Wordsearch GeneratorWhile researching questions for the family video-chat quiz night, I've found a fair few bizarre facts that you might like to use in your own quiz games.


Define a custom style module with a theme-for
attribute to target
a specific Vaadin Element type.
To stay on a safe side, only apply custom styles to either the element
itself (:host
) or the exposed shadow parts ([part~="name"]
).
NOTE: The custom style module must be defined/imported before the element it targets.


This post is a continuation of a series of posts about WebGL. The first started with fundamentals and the previous was about translating geometry.
I'm going to admit right up front I have no idea if how I explain this will make sense but what the heck, might as well try. First I want to introduce you to what's called a "unit circle". If you remember your junior high school math (don't go to sleep on me!) a circle has a radius. The radius of a circle is the distance from the center of the circle to the edge. A unit circle is a circle with a radius of 1.0.
Here's a unit circle.
Notice as you drag the blue handle around the circle the X and Y positions change. Those represent the position of that point on the circle. At the top Y is 1 and X is 0. On the right X is 1 and Y is 0.
If you remember from basic 3rd grade math if you multiply something by 1 it stays the same. So 123 * 1 = 123. Pretty basic right? Well, a unit circle, a circle with a radius of 1.0 is also a form of 1. It's a rotating 1. So you can multiply something by this unit circle and in a way it's kind of like multiplying by 1 except magic happens and things rotate.
We're going to take that X and Y value from any point on the unit circle and we'll multiply our geometry by them from our previous sample.
Here's are the updates to our shader.
<script id="2d-vertex-shader" type="x-shader/x-vertex"> attribute vec2 a_position; uniform vec2 u_resolution; uniform vec2 u_translation; uniform vec2 u_rotation; void main() { // Rotate the position vec2 rotatedPosition = vec2( a_position.x * u_rotation.y + a_position.y * u_rotation.x, a_position.y * u_rotation.y - a_position.x * u_rotation.x); // Add in the translation. vec2 position = rotatedPosition + u_translation;
And we update the JavaScript so that we can pass those 2 values in.
... var rotationLocation = gl.getUniformLocation(program, "u_rotation"); ... var rotation = [0, 1]; .. // Draw the scene. function drawScene() { // Clear the canvas. gl.clear(gl.COLOR_BUFFER_BIT); // Set the translation. gl.uniform2fv(translationLocation, translation); // Set the rotation. gl.uniform2fv(rotationLocation, rotation); // Draw the rectangle. gl.drawArrays(gl.TRIANGLES, 0, 18); }
And here's the result. Drag the handle on the circle to rotate or the sliders to translate.
Why does it work? Well, look at the math.
rotatedX = a_position.x * u_rotation.y + a_position.y * u_rotation.x; rotatedY = a_position.y * u_rotation.y - a_position.x * u_rotation.x;
Let's stay you have a rectangle and you want to rotate it. Before you start rotating it the top right corner is at 3.0, 9.0. Let's pick a point on the unit circle 30 degrees clockwise from 12 o'clock.
The position on the circle there is 0.50 and 0.87
3.0 * 0.87 + 9.0 * 0.50 = 7.1 9.0 * 0.87 - 3.0 * 0.50 = 6.3
That's exactly where we need it to be
The same for 60 degrees clockwise
The position on the circle there is 0.87 and 0.50
3.0 * 0.50 + 9.0 * 0.87 = 9.3 9.0 * 0.50 - 3.0 * 0.87 = 1.9
You can see that as we rotate that point clockwise to the right the X value gets bigger and the Y gets smaller. If kept going past 90 degrees X would start getting smaller again and Y would start getting bigger. That pattern gives us rotation.
There's another name for the points on a unit circle. They're call the sine and cosine. So for any given angle we can just look up the sine and cosine like this.
function printSineAndCosineForAnAngle(angleInDegrees) { var angleInRadians = angleInDegrees * Math.PI / 180; var s = Math.sin(angleInRadians); var c = Math.cos(angleInRadians); console.log("s = " + s + " c = " + c); }
If you copy and paste the code into your JavaScript console and type printSineAndCosignForAngle(30)
you see it prints s = 0.49 c= 0.87
(note: I rounded off the numbers.)
If you put it all together you can rotate your geometry to any angle you desire. Just set the rotation to the sine and cosine of the angle you want to rotate to.
... var angleInRadians = angleInDegrees * Math.PI / 180; rotation[0] = Math.sin(angleInRadians); rotation[1] = Math.cos(angleInRadians);
Here's a version that just has an angle setting. Drag the sliders to translate or rotate.
I hope that made some sense. Next up a simpler one. Scale.


The following instructions will guide you through making a basic Bloom shell which contains source text in a single language. At this time, Bloom doesn't have anything special for helping you make or distribute shells... that will come in the future.
For now, to make a basic shell, you just use Bloom as though you were making a new vernacular book. But instead of making the book in a vernacular library project, you make a library for the source language (e.g. "English"). Then create a new book, using a paper/layout template like "A5 Portrait".
Create a new project, and check this option:
Next, choose one of the national languages you'll be working with:
Note: although Bloom supports multi-lingual shells, the Bloom user interface does not yet let you switch other languages (e.g., English and Tok Pisin). The way to do that for now is to quit bloom, open up the "bloomLibary" document in notepad, and change the iso639 code and languageName to that of another language. Save that, run Bloom again, and now you'll be adding a different national language to the same shells.
In the future, we hope to have a nifty system of submitting and distributing shells, so that you can publish your collections and Bloom users can subscribe to them. For now, we have nothing so fancy as that.
OK, so you have a one or more shells in a collection folder, perhaps in your "My Documents/Bloom/my super collection" folder. Now you want to test them out or give them to someone else to use. What you need to do is to move that collection folder to where Bloom looks for shell collections. On Vista and Windows 7, this is found at "C:\Program Data\SIL\Bloom\Collections". On Windows XP, it is in "C:\Documents and Settings\All Users\Application Data\SIL\Bloom\Collections". You can either copy your shell collection into this folder, or create a shortcut there which points to your collection.
On your own computer, just use the shortcut method. That way, you can open a vernacular library and test out your new shell, without having to move it around the computer.


THE PREACHER'S WIFE A film review by Andrew Hicks Copyright 1996 Andrew Hicks / Fatboy Productions
(1996) *** (out of four)
THE PREACHER'S WIFE is a two-hour Hallmark card -- sappy and unoriginal yet uplifting and touching. Yes, I'm a sarcastic cynic, but even I can put that aside when a decent feel-good movie comes along, especially these morally-sound musical comedies with a black female lead (SISTER ACT, anybody?). THE PREACHER'S WIFE is a positive movie about the comraderie of a black community like only a white woman could tell it... I didn't say I was going to set the sarcasm _completely_ aside.
Denzel Washington plays an angel sent to lend assistance to a preacher (Courtney B. Vance) and his family. Whitney Houston, of course, plays the preacher's wife, a gospel-singing woman who finds her husband has less and less time for her as troubles mount in the church and community. Their son's best friend is being sent away to a foster family, a local kid is charged with armed robbery, the church boiler is shot and a greedy local businessman (Gregory Hines) is buying up all the property in sight. Predictably, these problems only exist to be solved by Denzel the Anzel... excuse me, the Angel...
Courtney is hard to convince at first, even after Denzel pops up three consecutive times when Courtney prays for divine help. And all Denzel's talk of an angel handbook and the three rules he has to abide by (don't expose him to sunlight, don't get him wet, don't feed him after midnight) seems more than a little odd, but the preacher's family easily accepts him as Courtney's new assistant.
Two of THE PREACHER'S WIFE's best comic performances are from Whitney's WAITING TO EXHALE compatriot Loretta Devine, as Courtney's secretary, and Jenifer Lewis in the role of Whitney's mother. In a movie that asks us to believe angels are among us, the fact that Whitney's mom looks young enough to be her sister is infinitely less believable.
Denzel almost assumes Courtney's roles for awhile, serving as father-figure for their son, doing church paperwork and even taking Whitney dancing at Jazzie's, a club frequented by Lionel Richie. (Actually, I think Lionel works there as part-time bartender to supplement his paltry "All Night Long" and "We Are the World" royalties.) This causes a little heavenly strife and even prompts Courtney to say the h-word, but rest assured all will end happily.
As always, the soundtrack comes courtesy of Whitney Houston herself and, just like the last two times, is billed as "the soundtrack event of the year." She doesn't even make albums anymore, just soundtracks. Unlike THE BODYGUARD or WAITING TO EXHALE, though, her musical contributions to THE PREACHER'S WIFE give the movie its identity. Songs like "I Love the Lord" and "The Lord Is My Shepherd," most of which feature the Georgia Mass Choir, could singlehandedly make gospel music radio-friendly.  Trust me.
Penny Marshall, who directed this remake of Cary Grant's THE BISHOP'S WIFE, did an admirable job making this movie attractive holiday fluff that elevates itself above the mediocre mush you'd expect. She followed the recipe for a feel-good Christmas movie and came up with something tasty, not just the usual PRANCER fruitcake. Remaking it with a black cast was her best idea -- it's the appeal of Denzel, Whitney and the supporting cast that make the movie fun to watch. THE PREACHER'S WIFE is a safe movie for all ages, and I imagine more than a few church youth groups will be taking trips to the movie theater this Christmas season.
--
Visit the Movie Critic at LARGE homepage at http://www.missouri.edu/~c667778/movies.html Serving America For Over 1/33rd of a Century!
The review above was posted to the
rec.arts.movies.reviews newsgroup (de.rec.film.kritiken for German reviews).
The Internet Movie Database accepts no responsibility for the contents of the
review and has no editorial control. Unless stated otherwise, the copyright
belongs to the author.
Please direct comments/criticisms of the review to relevant newsgroups.
Broken URLs inthe reviews are the responsibility of the author.
The formatting of the review is likely to differ from the original due
to ASCII to HTML conversion.
Related links: index of all rec.arts.movies.reviews reviews


Here is the only place where you can find reliable and true information all organized into one place. You won't find this anywhere else.
We have every source checked into and made sure that everything is facts!
With easy tags, search bars, etc. It will be easy to find everything you need.
The whole reason we came up with this is because there is tons of misinformation on the internet. Here will be the one and only place that makes sure that everything is pure facts!


{% if get_flashed_messages(category_filter=["error"]) %} {% for msg in get_flashed_messages(category_filter=["error"]) %}
{{ msg }}
×
{% endfor %} {% endif %} {% if get_flashed_messages(category_filter=["success"]) %} {% for msg in get_flashed_messages(category_filter=["success"]) %}
{{ msg }}
×
{% endfor %} {% endif %}
Job
Contact
Log Out
{% block content %}{% endblock %}
Add a job
×
Company:
Select existing company
{% for company in companies %}
{{ company.name }}
{% endfor %}
Job title:
Job status:
Interested
Applied
Phone interview
On-site interview
Received offer
Accepted offer
Declined offer
No job offer
Link:
Notes:
Close
Submit
Add a contact
×
First name:
Last name:
Email:
Phone:
Company:
Select existing company
{% for company in companies %}
{{ company.name }}
{% endfor %}
Contact event:
Met at networking event
Requested informational interview
Met for informational interview
Introduced to others
Referred for job application
Notes:
Close
Submit
{% block script %}{% endblock %}


Not Connected
Enter the name of your mbed compatible BLE board and tap Connect.
This app is paired with the custom GATT mbed code. Connect to the wearable IoT-enabled SmartBin of your choice, and see how you compare to the rest of the world. Find out if you are an eco-warrior… or an eco-catastrophe!
Daily waste weight (kg)
Personal average (kg)
World average (kg)
Bin is not full <3
Bin is full </3
Statistics
| Ranking: | Eco-God |
|---|---|
| Average density of your rubbish: | 200 kg/m^3 |
| Average time to fill a SmartBin: | 1 day |
| Age of the SmartBin: | 10 day |


Use the :hover selector to change the style of the button when you move the mouse over it.
Tip: Use the transition-duration property to determine the speed of the "hover" effect:


Finding a school that treats women well in its STEM majors can be one of the hardest parts of choosing a college. Save valuable time in your college search by using our data to help you make your decision.
Find the schools that graduate the most women in your major.
Plenty of women graduate from a certain school, but how many started a degree and never completed it?
View career prospects for women graduates from each school.
Make sure your prospective school has health programs and student organizations that serve lesbian and transgender women.
Research the comfort and safety of the campus neighborhood.
See which colleges have the best women's health programs nearby, both on and off campus.


HTTP Model
Akka HTTP model contains a deeply structured, fully immutable, case-class based model of all the major HTTP data structures, like HTTP requests, responses and common headers. It lives in the akka-http-core module and forms the basis for most of Akka HTTP's APIs.
Overview
Since akka-http-core provides the central HTTP data structures you will find the following import in quite a few places around the code base (and probably your own code as well):
import akka.http.scaladsl.model._
This brings all of the most relevant types in scope, mainly:
- HttpRequest and HttpResponse, the central message model
- headers, the package containing all the predefined HTTP header models and supporting types
- Supporting types like Uri, HttpMethods, MediaTypes, StatusCodes, etc.
A common pattern is that the model of a certain entity is represented by an immutable type (class or trait), while the actual instances of the entity defined by the HTTP spec live in an accompanying object carrying the name of the type plus a trailing plural 's'.
For example:
- Defined HttpMethod instances live in the HttpMethods object.
- Defined HttpCharset instances live in the HttpCharsets object.
- Defined HttpEncoding instances live in the HttpEncodings object.
- Defined HttpProtocol instances live in the HttpProtocols object.
- Defined MediaType instances live in the MediaTypes object.
- Defined StatusCode instances live in the StatusCodes object.
HttpRequest
HttpRequest and HttpResponse are the basic case classes representing HTTP messages.
An HttpRequest consists of
- a method (GET, POST, etc.)
- a URI
- a seq of headers
- an entity (body data)
- a protocol
Here are some examples how to construct an HttpRequest:
import HttpMethods._
// construct a simple GET request to `homeUri`
val homeUri = Uri("/abc")
HttpRequest(GET, uri = homeUri)
// construct simple GET request to "/index" (implicit string to Uri conversion)
HttpRequest(GET, uri = "/index")
// construct simple POST request containing entity
val data = ByteString("abc")
HttpRequest(POST, uri = "/receive", entity = data)
// customize every detail of HTTP request
import HttpProtocols._
import MediaTypes._
import HttpCharsets._
val userData = ByteString("abc")
val authorization = headers.Authorization(BasicHttpCredentials("user", "pass"))
HttpRequest(
PUT,
uri = "/user",
entity = HttpEntity(`text/plain` withCharset `UTF-8`, userData),
headers = List(authorization),
protocol = `HTTP/1.0`)
All parameters of HttpRequest.apply have default values set, so headers for example don't need to be specified if there are none. Many of the parameters types (like HttpEntity and Uri) define implicit conversions for common use cases to simplify the creation of request and response instances.
HttpResponse
An HttpResponse consists of
- a status code
- a seq of headers
- an entity (body data)
- a protocol
Here are some examples how to construct an HttpResponse:
import StatusCodes._
// simple OK response without data created using the integer status code
HttpResponse(200)
// 404 response created using the named StatusCode constant
HttpResponse(NotFound)
// 404 response with a body explaining the error
HttpResponse(404, entity = "Unfortunately, the resource couldn't be found.")
// A redirecting response containing an extra header
val locationHeader = headers.Location("http://example.com/other")
HttpResponse(Found, headers = List(locationHeader))
In addition to the simple HttpEntity constructors which create an entity from a fixed String or ByteString as shown here the Akka HTTP model defines a number of subclasses of HttpEntity which allow body data to be specified as a stream of bytes.
HttpEntity
An HttpEntity carries the data bytes of a message together with its Content-Type and, if known, its Content-Length. In Akka HTTP there are five different kinds of entities which model the various ways that message content can be received or sent:
- HttpEntity.Strict
- The simplest entity, which is used when all the entity are already available in memory. It wraps a plain ByteString and represents a standard, unchunked entity with a known Content-Length.
- HttpEntity.Default
- The general, unchunked HTTP/1.1 message entity. It has a known length and presents its data as a Source[ByteString] which can be only materialized once. It is an error if the provided source doesn't produce exactly as many bytes as specified. The distinction of Strict and Default is an API-only one. One the wire, both kinds of entities look the same.
- HttpEntity.Chunked
- The model for HTTP/1.1 chunked content (i.e. sent with Transfer-Encoding: chunked). The content length is unknown and the individual chunks are presented as a Source[HttpEntity.ChunkStreamPart]. A ChunkStreamPart is either a non-empty Chunk or a LastChunk containing optional trailer headers. The stream consists of zero or more Chunked parts and can be terminated by an optional LastChunk part.
- HttpEntity.CloseDelimited
- An unchunked entity of unknown length that is implicitly delimited by closing the connection (Connection: close). The content data are presented as a Source[ByteString]. Since the connection must be closed after sending an entity of this type it can only be used on the server-side for sending a response. Also, the main purpose of CloseDelimited entities is compatibility with HTTP/1.0 peers, which do not support chunked transfer encoding. If you are building a new application and are not constrained by legacy requirements you shouldn't rely on CloseDelimited entities, since implicit terminate-by-connection-close is not a robust way of signaling response end, especially in the presence of proxies. Additionally this type of entity prevents connection reuse which can seriously degrade performance. Use HttpEntity.Chunked instead!
- HttpEntity.IndefiniteLength
- A streaming entity of unspecified length for use in a Multipart.BodyPart.
Entity types Strict, Default, and Chunked are a subtype of HttpEntity.Regular which allows to use them for requests and responses. In contrast, HttpEntity.CloseDelimited can only be used for responses.
Streaming entity types (i.e. all but Strict) cannot be shared or serialized. To create a strict, sharable copy of an entity or message use HttpEntity.toStrict or HttpMessage.toStrict which returns a Future of the object with the body data collected into a ByteString.
The HttpEntity companion object contains several helper constructors to create entities from common types easily.
You can pattern match over the subtypes of HttpEntity if you want to provide special handling for each of the subtypes. However, in many cases a recipient of an HttpEntity doesn't care about of which subtype an entity is (and how data is transported exactly on the HTTP layer). Therefore, the general method HttpEntity.dataBytes is provided which returns a Source[ByteString, Any] that allows access to the data of an entity regardless of its concrete subtype.
Note
- When to use which subtype?
- Use Strict if the amount of data is "small" and already available in memory (e.g. as a String or ByteString)
- Use Default if the data is generated by a streaming data source and the size of the data is known
- Use Chunked for an entity of unknown length
- Use CloseDelimited for a response as a legacy alternative to Chunked if the client doesn't support chunked transfer encoding. Otherwise use Chunked!
- In a Multipart.Bodypart use IndefiniteLength for content of unknown length.
Caution
When you receive a non-strict message from a connection then additional data are only read from the network when you request them by consuming the entity data stream. This means that, if you don't consume the entity stream then the connection will effectively be stalled. In particular no subsequent message (request or response) will be read from the connection as the entity of the current message "blocks" the stream. Therefore you must make sure that you always consume the entity data, even in the case that you are not actually interested in it!
Limiting message entity length
All message entities that Akka HTTP reads from the network automatically get a length verification check attached to them. This check makes sure that the total entity size is less than or equal to the configured max-content-length [1], which is an important defense against certain Denial-of-Service attacks. However, a single global limit for all requests (or responses) is often too inflexible for applications that need to allow large limits for some requests (or responses) but want to clamp down on all messages not belonging into that group.
In order to give you maximum flexibility in defining entity size limits according to your needs the HttpEntity features a withSizeLimit method, which lets you adjust the globally configured maximum size for this particular entity, be it to increase or decrease any previously set value. This means that your application will receive all requests (or responses) from the HTTP layer, even the ones whose Content-Length exceeds the configured limit (because you might want to increase the limit yourself). Only when the actual data stream Source contained in the entity is materialized will the boundary checks be actually applied. In case the length verification fails the respective stream will be terminated with an EntityStreamSizeException either directly at materialization time (if the Content-Length is known) or whenever more data bytes than allowed have been read.
When called on Strict entities the withSizeLimit method will return the entity itself if the length is within the bound, otherwise a Default entity with a single element data stream. This allows for potential refinement of the entity size limit at a later point (before materialization of the data stream).
By default all message entities produced by the HTTP layer automatically carry the limit that is defined in the application's max-content-length config setting. If the entity is transformed in a way that changes the content-length and then another limit is applied then this new limit will be evaluated against the new content-length. If the entity is transformed in a way that changes the content-length and no new limit is applied then the previous limit will be applied against the previous content-length. Generally this behavior should be in line with your expectations.
| [1] | akka.http.parsing.max-content-length (applying to server- as well as client-side), akka.http.server.parsing.max-content-length (server-side only), akka.http.client.parsing.max-content-length (client-side only) or akka.http.host-connection-pool.client.parsing.max-content-length (only host-connection-pools) |
Special processing for HEAD requests
RFC 7230 defines very clear rules for the entity length of HTTP messages.
Especially this rule requires special treatment in Akka HTTP:
Any response to a HEAD request and any response with a 1xx (Informational), 204 (No Content), or 304 (Not Modified) status code is always terminated by the first empty line after the header fields, regardless of the header fields present in the message, and thus cannot contain a message body.
Responses to HEAD requests introduce the complexity that Content-Length or Transfer-Encoding headers can be present but the entity is empty. This is modeled by allowing HttpEntity.Default and HttpEntity.Chunked to be used for HEAD responses with an empty data stream.
Also, when a HEAD response has an HttpEntity.CloseDelimited entity the Akka HTTP implementation will not close the connection after the response has been sent. This allows the sending of HEAD responses without Content-Length header across persistent HTTP connections.
Header Model
Akka HTTP contains a rich model of the most common HTTP headers. Parsing and rendering is done automatically so that applications don't need to care for the actual syntax of headers. Headers not modelled explicitly are represented as a RawHeader (which is essentially a String/String name/value pair).
See these examples of how to deal with headers:
import akka.http.scaladsl.model.headers._
// create a ``Location`` header
val loc = Location("http://example.com/other")
// create an ``Authorization`` header with HTTP Basic authentication data
val auth = Authorization(BasicHttpCredentials("joe", "josepp"))
// custom type
case class User(name: String, pass: String)
// a method that extracts basic HTTP credentials from a request
def credentialsOfRequest(req: HttpRequest): Option[User] =
for {
Authorization(BasicHttpCredentials(user, pass)) <- req.header[Authorization]
} yield User(user, pass)
HTTP Headers
When the Akka HTTP server receives an HTTP request it tries to parse all its headers into their respective model classes. Independently of whether this succeeds or not, the HTTP layer will always pass on all received headers to the application. Unknown headers as well as ones with invalid syntax (according to the header parser) will be made available as RawHeader instances. For the ones exhibiting parsing errors a warning message is logged depending on the value of the illegal-header-warnings config setting.
Some headers have special status in HTTP and are therefore treated differently from "regular" headers:
- Content-Type
- The Content-Type of an HTTP message is modeled as the contentType field of the HttpEntity. The Content-Type header therefore doesn't appear in the headers sequence of a message. Also, a Content-Type header instance that is explicitly added to the headers of a request or response will not be rendered onto the wire and trigger a warning being logged instead!
- Transfer-Encoding
- Messages with Transfer-Encoding: chunked are represented via the HttpEntity.Chunked entity. As such chunked messages that do not have another deeper nested transfer encoding will not have a Transfer-Encoding header in their headers sequence. Similarly, a Transfer-Encoding header instance that is explicitly added to the headers of a request or response will not be rendered onto the wire and trigger a warning being logged instead!
- Content-Length
- The content length of a message is modelled via its HttpEntity. As such no Content-Length header will ever be part of a message's header sequence. Similarly, a Content-Length header instance that is explicitly added to the headers of a request or response will not be rendered onto the wire and trigger a warning being logged instead!
- Server
- A Server header is usually added automatically to any response and its value can be configured via the akka.http.server.server-header setting. Additionally an application can override the configured header with a custom one by adding it to the response's header sequence.
- User-Agent
- A User-Agent header is usually added automatically to any request and its value can be configured via the akka.http.client.user-agent-header setting. Additionally an application can override the configured header with a custom one by adding it to the request's header sequence.
- Date
- The Date response header is added automatically but can be overridden by supplying it manually.
- Connection
- On the server-side Akka HTTP watches for explicitly added Connection: close response headers and as such honors the potential wish of the application to close the connection after the respective response has been sent out. The actual logic for determining whether to close the connection is quite involved. It takes into account the request's method, protocol and potential Connection header as well as the response's protocol, entity and potential Connection header. See this test for a full table of what happens when.
- Strict-Transport-Security
- HTTP Strict Transport Security (HSTS) is a web security policy mechanism which is communicated by the Strict-Transport-Security header. The most important security vulnerability that HSTS can fix is SSL-stripping man-in-the-middle attacks. The SSL-stripping attact works by transparently converting a secure HTTPS connection into a plain HTTP connection. The user can see that the connection is insecure, but crucially there is no way of knowing whether the connection should be secure. HSTS addresses this problem by informing the browser that connections to the site should always use TLS/SSL. See also RFC 6797.
Custom Headers
Sometimes you may need to model a custom header type which is not part of HTTP and still be able to use it as convienient as is possible with the built-in types.
Because of the number of ways one may interact with headers (i.e. try to match a CustomHeader against a RawHeader or the other way around etc), a helper trait for custom Header types and their companions classes are provided by Akka HTTP. Thanks to extending ModeledCustomHeader instead of the plain CustomHeader such header can be matched
final class ApiTokenHeader(token: String) extends ModeledCustomHeader[ApiTokenHeader] {
override def renderInRequests = false
override def renderInResponses = false
override val companion = ApiTokenHeader
override def value: String = token
}
object ApiTokenHeader extends ModeledCustomHeaderCompanion[ApiTokenHeader] {
override val name = "apiKey"
override def parse(value: String) = Try(new ApiTokenHeader(value))
}
Which allows the this CustomHeader to be used in the following scenarios:
val ApiTokenHeader(t1) = ApiTokenHeader("token")
t1 should ===("token")
val RawHeader(k2, v2) = ApiTokenHeader("token")
k2 should ===("apiKey")
v2 should ===("token")
// will match, header keys are case insensitive
val ApiTokenHeader(v3) = RawHeader("APIKEY", "token")
v3 should ===("token")
intercept[MatchError] {
// won't match, different header name
val ApiTokenHeader(v4) = DifferentHeader("token")
}
intercept[MatchError] {
// won't match, different header name
val RawHeader("something", v5) = DifferentHeader("token")
}
intercept[MatchError] {
// won't match, different header name
val ApiTokenHeader(v6) = RawHeader("different", "token")
}
Including usage within the header directives like in the following headerValuePF example:
def extractFromCustomHeader = headerValuePF {
case t @ ApiTokenHeader(token) ⇒ s"extracted> $t"
case raw: RawHeader ⇒ s"raw> $raw"
}
val routes = extractFromCustomHeader { s ⇒
complete(s)
}
Get().withHeaders(RawHeader("apiKey", "TheKey")) ~> routes ~> check {
status should ===(StatusCodes.OK)
responseAs[String] should ===("extracted> apiKey: TheKey")
}
Get().withHeaders(RawHeader("somethingElse", "TheKey")) ~> routes ~> check {
status should ===(StatusCodes.OK)
responseAs[String] should ===("raw> somethingElse: TheKey")
}
Get().withHeaders(ApiTokenHeader("TheKey")) ~> routes ~> check {
status should ===(StatusCodes.OK)
responseAs[String] should ===("extracted> apiKey: TheKey")
}
One can also directly extend CustomHeader which requires less boilerplate, however that has the downside of matching against RawHeader instances not working out-of-the-box, thus limiting its usefulnes in the routing layer of Akka HTTP. For only rendering such header however it would be enough.
Note
When defining custom headers, prefer to extend ModeledCustomHeader instead of CustomHeader directly as it will automatically make your header abide all the expected pattern matching semantics one is accustomed to when using built-in types (such as matching a custom header against a RawHeader as is often the case in routing layers of Akka HTTP applications).
Parsing / Rendering
Parsing and rendering of HTTP data structures is heavily optimized and for most types there's currently no public API provided to parse (or render to) Strings or byte arrays.
Note
Various parsing and rendering settings are available to tweak in the configuration under akka.http.client[.parsing], akka.http.server[.parsing] and akka.http.host-connection-pool[.client.parsing], with defaults for all of these being defined in the akka.http.parsing configuration section.
For example, if you want to change a parsing setting for all components, you can set the akka.http.parsing.illegal-header-warnings = off value. However this setting can be stil overriden by the more specific sections, like for example akka.http.server.parsing.illegal-header-warnings = on. In this case both client and host-connection-pool APIs will see the setting off, however the server will see on.
In the case of akka.http.host-connection-pool.client settings, they default to settings set in akka.http.client, and can override them if needed. This is useful, since both client and host-connection-pool APIs, such as the Client API Http().outgoingConnection or the Host Connection Pool APIs Http().singleRequest or Http().superPool, usually need the same settings, however the server most likely has a very different set of settings.
Registering Custom Media Types
Akka HTTP predefines most commonly encountered media types and emits them in their well-typed form while parsing http messages. Sometimes you may want to define a custom media type and inform the parser infrastructure about how to handle these custom media types, e.g. that application/custom is to be treated as NonBinary with WithFixedCharset. To achieve this you need to register the custom media type in the server's settings by configuring ParserSettings like this:
// similarily in Java: `akka.http.javadsl.settings.[...]`
import akka.http.scaladsl.settings.ParserSettings
import akka.http.scaladsl.settings.ServerSettings
// define custom media type:
val utf8 = HttpCharsets.`UTF-8`
val `application/custom`: WithFixedCharset =
MediaType.customWithFixedCharset("application", "custom", utf8)
// add custom media type to parser settings:
val parserSettings = ParserSettings(system).withCustomMediaTypes(`application/custom`)
val serverSettings = ServerSettings(system).withParserSettings(parserSettings)
val routes = extractRequest { r ⇒
complete(r.entity.contentType.toString + " = " + r.entity.contentType.getClass)
}
val binding = Http().bindAndHandle(routes, host, port, settings = serverSettings)
You may also want to read about MediaType Registration trees, in order to register your vendor specific media types in the right style / place.
The URI model
Akka HTTP offers its own specialised URI model class which is tuned for both performance and idiomatic usage within other types of the HTTP model. For example, an HTTPRequest's target URI is parsed into this type, where all character escaping and other URI specific semantics are applied.
Sometimes it may be needed to obtain the "raw" value of an incoming URI, without applying any escaping or parsing to it. While this use-case is rare, it comes up every once in a while. It is possible to obtain the "raw" request URI in Akka HTTP Server side by turning on the akka.http.server.raw-request-uri-header flag. When enabled, a Raw-Request-URI header will be added to each request. This header will hold the original raw request's URI that was used. For an example check the reference configuration.
Contents


This is a model of the mechanical part of one cylinder of an engine. The combustion is not modelled. The "inertia" component at the lower left part is the output inertia of the engine driving the gearbox. The angular velocity of the output inertia has a start value of 10 rad/s in order to demonstrate the movement of the engine.
The engine is modeled solely by revolute and prismatic joints. Since this results in a planar loop there is the well known difficulty that the cut-forces perpendicular to the loop cannot be uniquely computed, as well as the cut-torques within the plane. This ambiguity is resolved by using the option planarCutJoint in the Advanced menu of one revolute joint in every planar loop (here: joint B1). This option sets the cut-force in direction of the axis of rotation, as well as the cut-torques perpendicular to the axis of rotation at this joint to zero and makes the problem mathematically well-formed.
An animation of this example is shown in the figure below.


$template{name="sample-readme-html-header" title="Job Dependencies demo"}$
This demo leverages the built-in job dependencies feature and provides a easy and intuitive way to define a graph of jobs with dependencies. It supports any non-cyclic dependency graph and will work even when the jobs in the dependency graph are submitted from multiple JPPF clients running on multiple machines.
1. Grid setup
2. Running the demo
JPPF-x.y.z-samples-pack/JobDependencies
folder3. Defining your own dependency graph
JobDependencies/dependency_graph.txt
Configuration |
Corresponding graph |
|
4. Detection of cycles in the dependency graph
When a cycle is detected, the server will print a message to the console, similar to this:
[2016-05-09 21:48:00.621] cycle detected while adding dependency 'Job C' to 'Job A' : Job A ==> Job B ==> Job C ==> Job AFurthermore, no dependency will be assigned to the job, so that it can be executed and avoid being stuck in the server queue.
5. Distributed scenario: submitting jobs in the dependency graph from separate clients
As mentioned above, this demo will work even when the jobs are submitted from multiple client applications. To illustrate this, we will proceed as follows:
JPPF-x.y.z-samples-pack/JobDependencies
folder, let's call it JobDependencies2
for this exerciseJobDependencies/dependency_graph.txt
, remove or comment out the last 3 declared dependencies, so the dependencies should look like this:
Job F ==> Job A, Job B, Job E | root Job E ==> Job C, Job D Job D ==> Job B, Job C
JobDependencies2/dependency_graph.txt
, remove or comment out the first 3 declared dependencies, the dependencies should look like this:
Job C ==> Job A Job B ==> Job A Job A ==>
[2016-07-22 08:51:33.667] runner: ***** awaiting results for 'Job F' *****
If you need more insight into the code of this demo, you can consult the Java source files located in the CustomLoadBalancer/src folder.
In addition, There are 2 privileged places you can go to:
$template{name="sample-readme-html-footer"}$


Class ForwardedMulticastData
A forwarded multicast data message. When a client publishes, multi data is sent to the distributor, it gets forwarded to the subscribing clients with this message.
Implements
Inherited Members
Namespace: JetBlack.MessageBus.Messages
Assembly: JetBlack.MessageBus.Messages.dll
Syntax
public class ForwardedMulticastData : Message, IEquatable<ForwardedMulticastData>
Constructors
| Improve this Doc View SourceForwardedMulticastData(String, String, String, String, Boolean, DataPacket[])
Construct a forwarded multicast data message.
Declaration
public ForwardedMulticastData(string user, string host, string feed, string topic, bool isImage, DataPacket[] dataPackets)
Parameters
| Type | Name | Description |
|---|---|---|
| System.String | user | The user that sent the message. |
| System.String | host | The host of the sender. |
| System.String | feed | The name of the feed. |
| System.String | topic | The name of the topic. |
| System.Boolean | isImage | If true the data is considered an image. |
| DataPacket[] | dataPackets | The data packets. |
Properties
| Improve this Doc View SourceDataPackets
The data packets.
Declaration
public DataPacket[] DataPackets { get; }
Property Value
| Type | Description |
|---|---|
| DataPacket[] |
Feed
The name of the feed.
Declaration
public string Feed { get; }
Property Value
| Type | Description |
|---|---|
| System.String |
Host
The host of the sender.
Declaration
public string Host { get; }
Property Value
| Type | Description |
|---|---|
| System.String |
IsImage
If true the data is considered an image.
Declaration
public bool IsImage { get; }
Property Value
| Type | Description |
|---|---|
| System.Boolean |
Topic
The name of the topic.
Declaration
public string Topic { get; }
Property Value
| Type | Description |
|---|---|
| System.String |
User
The user that sent the message.
Declaration
public string User { get; }
Property Value
| Type | Description |
|---|---|
| System.String |
Methods
| Improve this Doc View SourceEquals(ForwardedMulticastData)
Test for equality.
Declaration
public bool Equals(ForwardedMulticastData other)
Parameters
| Type | Name | Description |
|---|---|---|
| ForwardedMulticastData | other | The message to test. |
Returns
| Type | Description |
|---|---|
| System.Boolean | True if the messages are equal. |
Equals(Object)
Test for equality.
Declaration
public override bool Equals(object obj)
Parameters
| Type | Name | Description |
|---|---|---|
| System.Object | obj | The object to compare. |
Returns
| Type | Description |
|---|---|
| System.Boolean | True if the objects are equal. |
Overrides
GetHashCode()
Returns the hash code for this instance.
Declaration
public override int GetHashCode()
Returns
| Type | Description |
|---|---|
| System.Int32 | A 32-bit signed integer hash code. |
Overrides
ReadBody(DataReader)
Read the body of the message.
Declaration
public static ForwardedMulticastData ReadBody(DataReader reader)
Parameters
| Type | Name | Description |
|---|---|---|
| DataReader | reader | The reader. |
Returns
| Type | Description |
|---|---|
| ForwardedMulticastData | The message. |
ToString()
Converts the value of the current object to it's equivalent string representation.
Declaration
public override string ToString()
Returns
| Type | Description |
|---|---|
| System.String | A string representation of the current object. |
Overrides
| Improve this Doc View SourceWrite(DataWriter)
Write a message.
Declaration
public override DataWriter Write(DataWriter writer)
Parameters
| Type | Name | Description |
|---|---|---|
| DataWriter | writer | The message writer. |
Returns
| Type | Description |
|---|---|
| DataWriter | The message writer. |


--- layout: post title: 'Strata Conference: What is Big Data?' date: '2012-02-29T17:58:11-08:00' tags: tumblr_url: http://alexhwilliams.tumblr.com/post/18527940918/strata-conference-what-is-big-data ---
http://bit.ly/zWzrhp


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BECOME YUUUUGE IN 5 YEARS
How to break the Intenet Donad-Trump-style (Yuuugeness measured in Google searches)


Virgo
Virgo : (August 24 – September 22)
You will be working hard but results will be good. You will be getting good returns. Financial position will get better. You will like to help needy people. And now will implement new ideas at your workplace. There will be favorable opportunities in your career and job. You will witness increase in your family happiness. It will make you feel satisfied.


--- title: "The digitised past" layout: full permalink: / header: overlay_color: "#000" overlay_filter: "0.5" overlay_image: /assets/images/IMG_6660.jpg excerpt: "IIIF and related digital image posts." intro: - excerpt: 'This is a blog but not officially related to IIIF' ---
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Announcing Science Hack Day India - 2016
We are excited to announce our 1st Science Hack Day India!
The event will take place on 22-23 October 2016 at Belgaum, a small city surrounded by some splendid nature, in Karnataka State of India.
We welcome you all to join us at
SHD India. Let's collaborate, learn, hack, build cool stuff and have lots of fun.
Registration is now open at eventbrite.
For more announcements follow us on...
and
What is Science Hack Day?
Science Hack Day is a two-day event where anyone excited about making weird, silly or serious things with science comes together in the same physical space to see what they can prototype within 30 consecutive hours. Designers, developers, scientists and anyone who is excited about making things with science are welcome to attend –
no experience in science or hacking is necessary, just an insatiable curiosity.
The mission of Science Hack Day is to get excited and make things with science! People organically form multidisciplinary teams over the course of a weekend: particle physicists team up with designers, marketers join forces with open source rocket scientists, writers collaborate with molecular biologists, and developers partner with school kids. By collaborating on focused tasks during this short period, small groups of hackers are capable of producing remarkable results.
Venue
We have an amazing place called
Sankalp Bhumi Farm Resort for this event. It was once an abandoned quarry, today natures glory restored. The resort resembles an enchanting oasis, with a thick set of trees, sprawling lawns, and a large lagoon surrounded by picturesque expansive rock walls as backdrop.
Schedule
Science Hack Day
Day 1:
09:00 Arrive, Check-in, Breakfast (provided)
10:00 Welcome, introductions
20.00 Hacker's dinner (provided)
21.00 Hacking Continued...
Day 2:
09:00 Doors open, breakfast (provided)
14:00 Hack demos begin! (Typically 5 minutes per demo)
15:00 Highschool Students interact with Hackers
16:00 Valedictory Function : Winning teams announced & given awards/medals
20.00 Hacker's dinner, Camp fire, Exchange of Ideas :)
Workshops
Science Workshops for Highschool Students
Along with hacking we also have Science Workshops for Highschool kids. Workshops will run parallel to the main event. About 150 students from various highschools in and around Belgaum will participate in the workshops.
A dedicated team of volunteers, mainly engineering students and Science teachers, will conduct these hands on workshops.
Students will be devided in to two batches. One batch will have Science Toys from Trash workshop and the other batch will have Soldering: Making Solar Lanterns Workshop.
Schedule
Day 1:
Afternoon Session
14:00 Hands-on workshop begins
16:00 High Tea (provided)
Day 2:
Morning Session
10:00 Hands-on workshop begins
12:30 End of workshop, Lunch
Afternoon Session
13:00 Hacking activity for students
15:00 Students interact with Hackers
16:00 Valedictory Function : Parents invited
Amazing People/Organizations helping us to make SHD India, happen !
------------------
Sponsorship helps keep Science Hack Day a free and fun event for the community to attend. In addition to being free to attend, Science Hack Day is organized by volunteers and wouldn’t be possible without sponsors. It’s only due to the graciousness of our sponsors that we’ll all be fueled with food, drink, shelter, and the various technological necessities for our hacking.
Supporting creativity & innovation -Our Generous sponsors


Hi guys,
is there any chance to make a widget for an input field for text or numbers?
The further handling in the js-file is the next step. But I am thinking since a few days, how to transfer the value to the code.
For example: in the button widget there is called a function on click.
function button_events()
{
$('.button').on("click", function(event) {....
Is there something similiar, hat gives back the value of an input field?
Any hints or ideas are appreciated....
I also made some attempts with a dashboard-textfield, inserting in the html-code something like this:
<form action="input_text.htm">

Input-Field:
<input name="inVal_01" size="30" maxlength="30" type="text">

</form>
As a result I get a textbox, where I can type in a text, but I really have no idea how to work with this input.
Maybe that this idea is a dead end :-(
Re: alphanumeric input-field in dashboards possible?
Hi,
no more help needed.
Found a solution with HTML-form and javascript in a textbox


Versace Gets Artsy for the Holidays, Prada Gets the Museum Treatment
by Aria DarcellaRead today’s dose of chic intel right here…
Versace Collaborates With Artist Sarah Baker for the Holidays
Rather than releasing a traditional campaign, Donatella Versace is guest editing the second edition of Baroness, a London-based publication co-founded by Matthew Holroyd and Dazed & Confused editor-in-chief Isabella Burley. Performance artist Sarah Baker has created a six chapter narrative starring herself and Helena Christensen, featuring Versace ready-to-wear, jewelry, and home decor pieces. “I am thrilled to partner with Sarah Baker on this exciting holiday saga,” says Donatella Versace. “She’s a visionary and knows exactly how to represent the Versace woman. My designs empower and this campaign fully represents that.”
A New Prada Exhibit Is In the Works (Evening Standard)
Prada. Front and Back, a new exhibit charting Miuccia Prada’s work at the house, will debut at the Design Museum in London next September. “For me, it’s a particularly personal challenge to work on the Prada exhibition,” says Deyan Sudjic, the museum’s co-director. “There is so much to explore about a company that never wants to do the obvious thing, and that is such a genuine cultural force.”
Brioni to be Honored at Pitti Uomo
Pitti Immagine Uomo 97 is celebrating the 75th anniversary of Brioni with a special presentation. The event will also include an installation, and will be curated by Olivier Saillard. “It is an honor for Pitti Immagine to welcome Brioni’s 75th anniversary event,” says Raffaello Napoleone, CEO of Pitti Immagine. ‘Florence played an important role in the history of this prestigious brand, because it is here that Brioni held the first ever men’s fashion show in 1952.” Pitti Uomo takes place January 7 to January 10, 2020.
Nordstrom and Rent the Runway Expand Their Partnership
Starting on Monday, Rent the Runway customers will be able to drop off their rentals at 29 Nordstrom locations — a massive expansion from the previous five. RTR members can also access Nordstrom services like styling, gift-wrapping, and more. “We’ve received great feedback from our customers about the convenience of the Rent the Runway Drop-Off Boxes in our Los Angeles area Nordstrom locations and are excited to offer the service to customers in cities like San Francisco, Chicago, Dallas and more,” says Jamie Nordstrom, president, Nordstrom stores. “The expansion of our partnership helps us better serve our customers through innovation around products and experiences.”
S ubscribe to our newsletter and follow us on Facebook and Instagram to stay up to date on all the latest fashion news and juicy industry gossip.


Address Stop
{{m.title}}
Your selection of stops
| Number Stop | Name Stop | Stops Address |
|---|---|---|
| {{stop.stop_number}} | {{stop.stop_name}} | {{stop.stop_address}} |


Component can be used to input money or sum of something if you
choose a currency symbol as a postfix (see
tuiCurrency
pipe samples).
There are also other components to input numbers:
InputCount
for integers under 999,
Slider
and
InputSlider
for inputting with a slider
Number formatting can be customized by using TUI_NUMBER_FORMAT
formControl.disable()
)
Import an Angular module for forms and
TuiInputNumberModule
in the same module where
you want to use our component:
Declare a form (FormGroup
) or a control
(FormControl
) in your component:
Add to the template:


Responsivize
Test your web app on:
Phones
Tablets
Laptops
Custom Size
Responsivize
is 100% open source. It is maintained by
Virej Dasani
. Report bugs and request features
here
(You can also open a
Pull Request!
)


Technology has aided us in many ways including the medical field, in education, and in the business world. We have made ground breaking discoveries with the help of technology. We have increased the lifespan of humans and pets with the help of technology. We have made safer cars. And the list goes on and on. But, with this, technology has also taken away our privacy.
Computers know exactly what we search, what we buy, how much time we spend on our computers, etc. Computers also have a feature where every single password is saved and comes up as soon as you launch the website. Amazon's Echo aka Alexa listens to you at all times and will respond upon hearing her name. Our phone's do the exact same thing with Siri and if you're like me, phones are always within 10 feet of us.
Privacy is important to some people and others don't really care. That's why some people put a piece of tape over their webcam. The book 1984 has something very similar called Big Brother which listens to the citizens at all times. I find that book very interesting but not too far off from where we are today with technology.


{%extends "base.html"%} {% block breadcrumb %} | View an In-kind Donation {% endblock %} {%block body%} {%include "inkinddonation_static.html"%} {%endblock%}


A little more information about me
Check out what Jesús loves to write code in
Thanks for visiting! If you what to stay in contact via Twitter: @susowiki


Here's a time line of Srinivasa Ramanujan life:
- 1887 - Born in Erode, Tamil Nadu, on December 22
- 1903 - Passes Matriculation examination from Town High School, Kumbakonam
- 1904 - Joins Government Arts College, Kumbakonam
- 1905 - Drops out of Kumbakonam college
- 1906 - Joins Pachaiyappa's College, Madrasm only to leave without completing his studies
- 1911 - Publishes first paper on Bernoulli Numbers
- 1912 - Gets a job at the Madras Port Trust. Ramanujan is instroduced to G.H. Hardy's tract on 'Orders of Infinity.' He provides an answer to one of the problems posed by Hardy
- 1913 - Ramanujan writes his first letter to Hardy. Hardy recognises Ramanujan as 'a mathematician of the highest class,' and tries to organise a visit by Ramanujan to England
- 1914 - E.H. Neville, a Fellow of Trinity College, Cambridge meets Ramanujan in Madras an convinces him to go to Cambridge. Neville writes to University of Madras to support Ramanujan. University of Madras offers Ramanujan scholarship. On March 17, leaves for England
- 1916 - Gets B.A. degree by research from Cambridge University
- 1917 - Periodically hospitalised for treatment
- 1918 - Becomes Fellow of the Royal Society. Elected to Trinity College Fellowship.
- 1919 - Returns to India
- 1920 - Health deteriorates. Dies on April 26, 1920
- 1927 - Collected papers of Ramanujan, edited by P.V.Seshu Aiyar, G.H.Hardy and B.M. Wilson and published by Cambridge University Press
An equation means nothing to me unless it expresses a thought of God
--- Srinivasa Ramanujan ---
More info from this incredible mathematician, click here


Cette série de
séminaires vise à faire connaître, dans la communauté d'iCODE,
les avancées récentes concernant les domaines de l'automatique et de la théorie du contrôle, ainsi que des thématiques émergentes corrélées.
This series of seminars aims at disseminating throughout the iCODE community the recent advances concerning the domains of automation and mathematical control theory, as well as related emerging domains.
Organisers : L. Greco, P. Mason
Contact<EMAIL_ADDRESS>|
8th June 2016 L2S CentraleSupelec, Salle du Conseil |
10:00 - 11:00 |
On Control Lyapunov-Krasovskii Functionals and Stabilization in the Sample-and-Hold Sense of Nonlinear Time-Delay Systems. Pierdomenico Pepe (Università degli Studi dell'Aquila) |
| 11:00 - 12:00 |
Robust perfomance by a stable controller for infinite-dimensional plants Hakki Ulaş Ünal (Anadolu University) |
|
|
24th May 2016 L2S CentraleSupelec, Salle du Conseil |
10:00 - 11:00 |
Inverse optimal control: the sub-Riemannian case Frédéric Jean (ENSTA) |
| 11:00 - 12:00 |
Optimal control and Lyapunov functions applied to satellite attitude control Nadjim Horri (Coventry University) |
|
|
15th April 2016 L2S CentraleSupelec, Salle du Conseil |
10:30 - 11:15 |
A modular design of incremental Lyapunov functions for microgrid control Claudio De Persis (Groningen University) |
| 11:30 - 12:15 |
Virtual Inertia Emulation and Placement in Power Grids Florian Dörfler (ETH Zurich) |
|
|
25th March 2016 L2S CentraleSupelec, Salle du Conseil |
10:00 - 11:00 |
Emergence of oscillatory patterns in diffusive networks Alexander Pogromsky (Eindhoven University of Technology) |
| 11:00 - 12:00 |
On Robust Stability of Multistable Systems Denis Efimov (INRIA Lille, CRIStAL) |
|
|
26th January 2016 L2S CentraleSupelec, Salle du Conseil |
10:00 - 11:00 |
Long time behavior for stochastic switched differential equations Florent Malrieu (Université de Tours) |
| 11:00 - 12:00 |
Lyapunov exponents for random continuous-time switched systems and stabilizability Fritz Colonius (Augsburg University) |
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7th January 2016 L2S, Salle du Conseil |
15:30 - 16:30 |
Stability and H-infinity control for linear hybrid infinite dimensional systems with unbounded operators and periodic coefficients Nikita E. Barabanov (North Dakota State University) |
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12th November 2015 L2S CentraleSupelec, Salle du Conseil |
10:00 - 11:00 |
Precise and Robust Regulation of Gene Expression Using Fully Automatic Optogenetic Feedback Andreas Milias-Argeitis (ETH-Zürich) |
| 11:00 - 12:00 |
Analysis and control of stochastic reaction networks - Applications to biology Corentin Briat (ETH-Zürich) |
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16th October 2015 CentraleSupelec, Salle F3.05 |
10:30 - 11:30 |
Motor Control Principles for Enhanced Physical Interactions in Robots Arash Ajoudani (IIT Genoa) |
| 11:30 - 12:30 |
Control Systems, Robotics, and Neuroscience. A New(?) Convergence. Antonio Bicchi (Università di Pisa and IIT Genoa) |
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8th October 2015 CentraleSupelec, Salle F3.06 |
10:00 - 11:00 |
The convergence property: system theoretic aspects and applications Nathan van de Wouw (Eindhoven University of Technology) |
| 11:00 - 12:00 |
Model reduction of nonlinear systems using incremental system properties Bart Besselink (KTH Stockholm) |
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24th September 2015 L2S, Salle du Conseil |
10:30 - 11:30 |
An Introduction to Virtual Holonomic Constraints Manfredi Maggiore (University of Toronto) |
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6th July 2015 L2S, Salle des Séminaires |
10:00 - 11:00 |
Persistence and Switching: New Tools for Control and Estimation in Aerospace Systems Maruthi R. Akella (University of Texas at Austin) |
| 11:00 - 12:00 |
Stability of non-autonomous linear difference equations and applications Guilherme Mazanti (CMAP) |
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12th June 2015 L2S, Salle du Conseil |
10:00 - 11:00 |
On corner cutting in multi-obstacle avoidance problems Florin Stoican ("Politehnica" University of Bucharest) |
| 11:00 - 12:00 |
Model Predictive Control for Cooperative Guidance of Autonomous Vehicles Julien Marzat (Onera) |
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5th May 2015 L2S, Salle du Conseil |
10:00 - 12:00 |
Stability theory, as told by its developers Antonio Loria, Elena Panteley (CNRS, L2S) |
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26th March 2015 L2S, Salle du Conseil |
10:30 - 11:30 |
Stability and stabilization of hyperbolic systems with switching Christophe Prieur (CNRS, Gipsa-Lab) |
| 11:30 - 12:30 |
Tikhonov theorem for linear hyperbolic systems of conservation laws Ying Tang (Gipsa-Lab) |
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25th February 2015 L2S, Salle du Conseil |
9:45 - 10:45 |
Distributed predictive control: main ideas, extensions, and applications Marcello Farina (Politecnico di Milano) |
| 11:00 - 12:00 |
Plug-and-play control of constrained systems Giancarlo Ferrari Trecate (Università di Pavia) |
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22nd January 2015 L2S, Salle du Conseil |
14:00 - 15:00 |
On the optimal control of a linear neutral differential equation Raouf Boucekkine (GREQAM, AMSE, IUF) |
| 15:00 - 16:00 |
Insurance Demand, Prevention and Risk Attitudes: Theory and Experiments François Pannequin (ENS Cachan) |
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26th November 2014 L2S, Salle du Conseil |
10:00 - 11:00 |
Engineering controlled quantum systems Alain Sarlette (INRIA Roquencourt) |
| 11:00 - 12:00 |
Design of non-selective refocusing pulses in magnetic resonance imaging at
ultra-high field Nicolas Boulant (UNIRS / NeuroSpin / I2BM / DSV / CEA) |
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30th October 2014 L2S, Salle du Conseil |
10:00 - 11:00 |
A dynamic input allocation paradigm illustrated by applications Luca Zaccarian (CNRS - LAAS Toulouse and Università di Trento) |
| 11:00 - 12:00 |
On optimal/constrained output regulation for linear fat plants Sergio Galeani (Università di Roma Tor Vergata) |


@UrlEncoding Annotation
The {@link oaj.urlencoding.annotation.UrlEncoding @UrlEncoding} annotation is used to override the behavior of {@link oaj.urlencoding.UrlEncodingSerializer} on individual bean classes or properties.
The {@link oaj.urlencoding.annotation.UrlEncoding#expandedParams() expandedParams} setting is used to force bean properties of type array or Collection to be expanded into multiple key/value pairings. It's identical in behavior to using the {@link oaj.urlencoding.UrlEncodingSerializer#URLENC_expandedParams} and {@link oaj.urlencoding.UrlEncodingParser#URLENC_expandedParams} properties, but applies to only individual bean properties.


The json structure should contain the info about the values in an array containing json dicts containing the following elements: "field", with the name of the field, "op", operator (symbol or "like"), "val" with the value to be compared to. For example: [{"field":"id", "op":"=", "val":123}].
limit=<int>
The number of elements to retrieve.
offset=<int>
The offset of the elements to retrieve.
{%if model.is_geo %}
DISABLED: bbox=<bbox>
Bounding box to retrieve elements within.
DISABLED: nearest=<point>
Finds the first [limit] points that are nearest to [point].
DISABLED: geo=<field>
The field on which to make the queries if more geographic fields are available.