Responsive layout content (with restricted max width)
Fixed height content with overflow
Fixed layout content


ete-Tools is a personal project of mine to release some of my coolest and oldest projects.
It is a testing ground for Akka, spray.io and some libraries I have developed over the years but re-written in Scala
Stay tuned here as more and more things arrive that will lighten your work
Regards Ramon Buickland


Java Security
Byte Code Verification (no cheating)
Access Control (protect files)
Extends Firewall (protect information)
RSA (authentification)


text
speaker
show
haruka
hikari
takeru
santa
bear
speed
pitch
emotion
none
happiness
anger
sadness
works for the following speakers. haruka, hikari, takeru, santa and bear.
emotion level
none
1
2
3
4
works for the following speakers. haruka, hikari, takeru, santa and bear.
speak


CHANGELOG Suggest¶
Writing CHANGELOGs can be a grueling task but git logs can help you create a suggested CHANGELOG. The intention of this tool is to remove some of the grunt work involved checking diffs to write CHANGELOGs.
Usage¶
Command line usage:
usage: changelog [-h] -s START [-e END] -v VERSION [-i ISSUE]
[-u ISSUE_URL_PREFIX]
Publish suggested CHANGELOG from git commits
optional arguments:
-h, --help show this help message and exit
-s START, --start START
Enter commit/tag/branch you want
CHANGELOG from
-e END, --end END Enter commit/tag/branch you want
CHANGELOG to. Default value is
set to `master` branch
-v VERSION, --version VERSION
Enter new version number for
the CHANGELOG
-i ISSUE, --issue ISSUE
Enter issue ID pattern. Should be
a regex pattern to look for
-u ISSUE_URL_PREFIX, --issue-url-prefix ISSUE_URL_PREFIX
Enter issue URL prefix. If your issues
are on github then it could be
https://gh.com/<username>/<repo>/issues/#


Brand Logo
4:02 PM
Carrier
Activity Name
Short Description
Points
Members Participating
My Buddies Participating
Details for activity...
Join/Unjoin
Check In


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Nico is a web dev / sys admin currently based in Frankfurt, Germany. Hes hoping this blog can be place to reference back to his own previous work when necessary and maybe even help others find what they're looking for! The next post is coming soon, he promises :P


|
GNSDK C API Reference
<IP_ADDRESS>2
|
Macros | |
| #define | GNSDK_STORAGE_SQLITE_OPTION_CACHE_FILESIZE "gnsdk_storage_sqlite_filesize" |
| #define | GNSDK_STORAGE_SQLITE_OPTION_CACHE_MEMSIZE "gnsdk_storage_sqlite_memsize" |
| #define | GNSDK_STORAGE_SQLITE_OPTION_JOURNAL_MODE "gnsdk_storage_sqlite_journalmode" |
| #define | GNSDK_STORAGE_SQLITE_OPTION_STORAGE_FOLDER "gnsdk_storage_sqlite_storage_folder" |
| #define | GNSDK_STORAGE_SQLITE_OPTION_SYNCHRONOUS "gnsdk_storage_sqlite_synchronous" |
| #define GNSDK_STORAGE_SQLITE_OPTION_CACHE_FILESIZE "gnsdk_storage_sqlite_filesize" |
Sets the maximum size the GNSDK cache can grow to; for example “100” for 100 Kb or “1024” for 1 MB. This limit applies to each cache that is created.
The value passed for this option is the maximum number of Kilobytes that the cache files can grow to. For example, “100” sets the maximum to 100 KB, and “1024” sets the maximum to 1 MB.
If the cache files' current size already exceeds the maximum when this option is set, then the set maximum is not applied.
When the maximum size is reached, new cache entries are not written to the database. Additionally, a maintenance thread is run that attempts to clean up expired records from the database and create space for new records.
If this option is not set the cache files default to having no maximum size.
For more information see the SQLite site definition of "PRAGMA page_size" and "PRAGMA max_page_count". http://www.sqlite.org/pragma.html#pragma_page_size http://www.sqlite.org/pragma.html#pragma_max_page_count
Definition at line 203 of file gnsdk_storage_sqlite.h.
| #define GNSDK_STORAGE_SQLITE_OPTION_CACHE_MEMSIZE "gnsdk_storage_sqlite_memsize" |
Sets the maximum amount of memory SQLite can use to buffer cache data.
The value passed for this option is the maximum number of Kilobytes of memory that can be used. For example, “100” sets the maximum to 100 KB, and “1024” sets the maximum to 1 MB.
Use this key as the option_name
parameter with the gnsdk_storage_sqlite_option_set()
or gnsdk_storage_sqlite_option_get()
functions.
For more information see the SQLite site definition of "PRAGMA cache_size". http://www.sqlite.org/pragma.html#pragma_cache_size
Definition at line 219 of file gnsdk_storage_sqlite.h.
| #define GNSDK_STORAGE_SQLITE_OPTION_JOURNAL_MODE "gnsdk_storage_sqlite_journalmode" |
Sets how the SQLite journal file is managed for database transactions.
This option is available for SQLite performance tuning. Valid values for this option are:
For more information see the SQLite site definition of "PRAGMA journal_mode". http://www.sqlite.org/pragma.html#pragma_journal_mode
Definition at line 258 of file gnsdk_storage_sqlite.h.
| #define GNSDK_STORAGE_SQLITE_OPTION_STORAGE_FOLDER "gnsdk_storage_sqlite_storage_folder" |
Sets the folder path where storage file(s) can be created within or opened from.
If this option is not specified the current working directory of the process will be used.
The storage location must be a valid relative or absolute path to an existing folder that has the necessary write permissions.
Important:
For Windows CE an absolute path must be used.
Definition at line 179 of file gnsdk_storage_sqlite.h.
| #define GNSDK_STORAGE_SQLITE_OPTION_SYNCHRONOUS "gnsdk_storage_sqlite_synchronous" |
Sets the method that SQLite uses to write to the cache files.
This option is available for SQLite performance tuning. Valid values for this option are:
If the threat of losing a cache file due to hardware failure is high, then set this option in your application to NORMAL or FULL.
For more information see the SQLite site definition of "PRAGMA synchronous". http://www.sqlite.org/pragma.html#pragma_synchronous
Definition at line 239 of file gnsdk_storage_sqlite.h.
How can we improve this topic?
Copyright © 2000-present. Gracenote, Inc. All rights reserved. Generated on Tue Jan 8 2013 07:40:58.


Thins to do when an employee is returning to work:
DO prevent and stop any discrimination or stigmatization from coworkers
DO prepare the employee who has been on disability leave for questions from coworkers
DO prepare employees for the return of the employee who has been away
Tell them how the employee's return affects them
DO suggest that the employee returning to work prepare a response to these questions
Example: "Yes, I was away for health-related reasons, and it was difficult, but I'm so glad to be back now. I'll be working on a restricted work week, but soon I'll be back 100%--I'm really looking forward to it. How have you been?"


You can take a vacation to one of these places, which one is most
appealing?
A trek through Taman Negara. Bring on the
adventure!
Cameron Highlands. A place of solitude and
peace
Perhaps a spa or Redang beach. A relaxing
getaway
Kuala Lumpur. Let's see the sights, taste
the cuisine, I just hope I can fit it all in during one trip!


| window_order {dbplyr} | R Documentation |
These allow you to override the PARTITION BY
and ORDER BY
clauses
of window functions generated by grouped mutates.
window_order(.data, ...) window_frame(.data, from = -Inf, to = Inf)
.data |
A lazy data frame backed by a database query. |
... |
Variables to order by |
from, to |
Bounds of the frame. |
library(dplyr, warn.conflicts = FALSE) db <- memdb_frame(g = rep(1:2, each = 5), y = runif(10), z = 1:10) db %>% window_order(y) %>% mutate(z = cumsum(y)) %>% show_query() db %>% group_by(g) %>% window_frame(-3, 0) %>% window_order(z) %>% mutate(z = sum(x)) %>% show_query()


| DB Name | DB Id | Instance | Inst num | Release | RAC | Host |
|---|---|---|---|---|---|---|
| E2SNDB |<PHONE_NUMBER> | E2SNDB | 1 | <IP_ADDRESS>.0 | NO | e2sn.localdomain |
| CPUs | SGA Size | Buffer Cache | Shared Pool | ASH Buffer Size |
|---|---|---|---|---|
| 8 | 499M (100%) | 260M (52.1%) | 216M (43.3%) | 10.0M (2.0%) |
| Sample Time | Data Source | |
|---|---|---|
| Analysis Begin Time: | 22-May-12 00:00:00 | V$ACTIVE_SESSION_HISTORY |
| Analysis End Time: | 23-May-12 00:00:00 | V$ACTIVE_SESSION_HISTORY |
| Elapsed Time: | 1,440.0 (mins) | |
| Sample Count: | 19,678 | |
| Average Active Sessions: | 0.23 | |
| Avg. Active Session per CPU: | 0.03 | |
| Report Target: | None specified |
| Event | Event Class | % Event | Avg Active Sessions |
|---|---|---|---|
| CPU + Wait for CPU | CPU | 60.90 | 0.14 |
| db file sequential read | User I/O | 9.59 | 0.02 |
| Event | Event Class | % Activity | Avg Active Sessions |
|---|---|---|---|
| CPU + Wait for CPU | CPU | 27.63 | 0.06 |
| Event | % Event | P1 Value, P2 Value, P3 Value | % Activity | Parameter 1 | Parameter 2 | Parameter 3 |
|---|---|---|---|---|---|---|
| db file sequential read | 9.64 | "9","450786","1" | 0.02 | file# | block# | blocks |
| Service | Module | % Activity | Action | % Action |
|---|---|---|---|---|
| E2SNDB | New Order | 41.38 | UNNAMED | 24.54 |
| getProductQuantity | 6.97 | |||
| getProductDetailsByCategory | 5.85 | |||
| SYS$BACKGROUND | UNNAMED | 28.47 | UNNAMED | 28.47 |
| E2SNDB | Browse Products | 18.18 | getProductDetails | 7.27 |
| UNNAMED | 6.11 | |||
| logon | 3.58 | |||
| UNNAMED | 3.66 | UNNAMED | 3.66 | |
| New Customer | 1.95 | logon | 1.23 |
| SQL Command Type | Distinct SQLIDs | % Activity | Avg Active Sessions |
|---|---|---|---|
| PL/SQL EXECUTE | 16 | 40.69 | 0.09 |
| SELECT | 175 | 17.27 | 0.04 |
| INSERT | 17 | 7.86 | 0.02 |
| UPDATE | 13 | 3.36 | 0.01 |
| Phase of Execution | % Activity | Avg Active Sessions |
|---|---|---|
| SQL Execution | 69.71 | 0.16 |
| PLSQL Execution | 37.05 | 0.08 |
| SQL ID | Planhash | Sampled # of Executions | % Activity | Event | % Event | Top Row Source | % RwSrc | SQL Text |
|---|---|---|---|---|---|---|---|---|
| 0w2qpuc6u2zsp | 4404 | 22.74 | CPU + Wait for CPU | 22.71 | ** Row Source Not Available ** | 22.71 | BEGIN :1 := orderentry.neworde... | |
| 147a57cxq3w5y | 3148 | 16.05 | CPU + Wait for CPU | 16.05 | ** Row Source Not Available ** | 16.05 | BEGIN :1 := orderentry.browsep... | |
| c749bc43qqfz3 |<PHONE_NUMBER> | 185 | 4.18 | CPU + Wait for CPU | 4.18 | SELECT STATEMENT | 4.16 | SELECT SYSDATE FROM DUAL |
| 8z3542ffmp562 |<PHONE_NUMBER> | 190 | 3.39 | CPU + Wait for CPU | 3.18 | SELECT STATEMENT | 2.84 | SELECT QUANTITY_ON_HAND FROM P... |
| bymb3ujkr3ubk | 494735477 | 380 | 3.39 | CPU + Wait for CPU | 1.82 | INSERT STATEMENT | 1.65 | INSERT INTO ORDERS(ORDER_ID, O... |
| db file sequential read | 1.57 | LOAD TABLE CONVENTIONAL | 1.57 |
| SQL ID | PlanHash | Sampled # of Executions | % Activity | Row Source | % RwSrc | Top Event | % Event | SQL Text |
|---|---|---|---|---|---|---|---|---|
| 0w2qpuc6u2zsp | 4404 | 22.74 | ** Row Source Not Available ** | 22.74 | CPU + Wait for CPU | 22.71 | BEGIN :1 := orderentry.neworde... | |
| 147a57cxq3w5y | 3148 | 16.05 | ** Row Source Not Available ** | 16.05 | CPU + Wait for CPU | 16.05 | BEGIN :1 := orderentry.browsep... | |
| c749bc43qqfz3 |<PHONE_NUMBER> | 185 | 4.18 | SELECT STATEMENT | 4.16 | CPU + Wait for CPU | 4.16 | SELECT SYSDATE FROM DUAL |
| 8z3542ffmp562 |<PHONE_NUMBER> | 190 | 3.39 | SELECT STATEMENT | 2.84 | CPU + Wait for CPU | 2.84 | SELECT QUANTITY_ON_HAND FROM P... |
| bymb3ujkr3ubk | 494735477 | 380 | 3.39 | LOAD TABLE CONVENTIONAL | 1.72 | db file sequential read | 1.57 | INSERT INTO ORDERS(ORDER_ID, O... |
| INSERT STATEMENT | 1.65 | CPU + Wait for CPU | 1.65 |
| PLSQL Entry Subprogram | % Activity | PLSQL Current Subprogram | % Current |
|---|---|---|---|
| SOE.ORDERENTRY.NEWORDER | 41.39 | SQL | 20.63 |
| SOE.ORDERENTRY.NEWORDER | 11.98 | ||
| SYS.DBMS_APPLICATION_INFO.SET_ACTION | 4.63 | ||
| SOE.ORDERENTRY.BROWSEPRODUCTS | 20.56 | SOE.ORDERENTRY.BROWSEPRODUCTS | 9.22 |
| SQL | 6.13 | ||
| SYS.DBMS_APPLICATION_INFO.SET_ACTION | 3.30 | ||
| SOE.ORDERENTRY.NEWCUSTOMER | 1.95 | SQL | 1.42 |
| SOE.ORDERENTRY.BROWSEANDUPDATEORDERS | 1.68 | SQL | 1.04 |
| Call Type | Count | % Activity | Avg Active Sessions |
|---|---|---|---|
| V8 Bundled Exec | 13,643 | 69.33 | 0.16 |
| Sid, Serial# | % Activity | Event | % Event | User | Program | # Samples Active | XIDs |
|---|---|---|---|---|---|---|---|
| 97, 1 | 21.69 | CPU + Wait for CPU | 21.69 | SYS |<EMAIL_ADDRESS>(PSP0) | 4,269/86K [ 5%] | 0 |
| 67, 17 | 7.11 | CPU + Wait for CPU | 6.14 | SOE | JDBC Thin Client | 1,208/86K [ 1%] | 324 |
| 136,10009 | 6.88 | CPU + Wait for CPU | 5.84 | SOE | JDBC Thin Client | 1,149/86K [ 1%] | 326 |
| db file sequential read | 1.03 | 203/86K [ 0%] | 133 | ||||
| 8,59605 | 6.80 | CPU + Wait for CPU | 5.81 | SOE | JDBC Thin Client | 1,143/86K [ 1%] | 334 |
| 161,51547 | 6.80 | CPU + Wait for CPU | 5.86 | SOE | JDBC Thin Client | 1,153/86K [ 1%] | 313 |
| Object ID | % Activity | Event | % Event | Object Name (Type) | Tablespace |
|---|---|---|---|---|---|
| 92219 | 2.02 | db file sequential read | 2.02 | SOE.ITEM_PRODUCT_IX (INDEX) | PPX |
| 92211 | 1.30 | db file sequential read | 1.30 | SOE.ORDER_PK (INDEX) | PPX |
| 92210 | 1.22 | db file sequential read | 1.21 | SOE.ORDER_ITEMS_PK (INDEX) | PPX |
| File ID | % Activity | Event | % Event | File Name | Tablespace |
|---|---|---|---|---|---|
| 9 | 9.48 | db file sequential read | 9.42 | /u01/oradata/E2SNDB/ppx01.dbf | PPX |
| Slot Time (Duration) | Slot Count | Event | Event Count | % Event |
|---|---|---|---|---|
| 00:00:00 (144.0 min) | 728 | CPU + Wait for CPU | 715 | 3.63 |
| control file sequential read | 8 | 0.04 | ||
| control file parallel write | 4 | 0.02 | ||
| 02:24:00 (144.0 min) | 660 | CPU + Wait for CPU | 645 | 3.28 |
| control file parallel write | 12 | 0.06 | ||
| control file sequential read | 3 | 0.02 | ||
| 04:48:00 (144.0 min) | 842 | CPU + Wait for CPU | 663 | 3.37 |
| db file sequential read | 154 | 0.78 | ||
| db file parallel write | 9 | 0.05 | ||
| 07:12:00 (144.0 min) | 3,697 | CPU + Wait for CPU | 3,305 | 16.80 |
| db file sequential read | 312 | 1.59 | ||
| db file parallel write | 45 | 0.23 | ||
| 09:36:00 (144.0 min) | 3,356 | CPU + Wait for CPU | 3,039 | 15.44 |
| db file sequential read | 274 | 1.39 | ||
| db file parallel write | 22 | 0.11 | ||
| 12:00:00 (144.0 min) | 3,245 | CPU + Wait for CPU | 2,959 | 15.04 |
| db file sequential read | 249 | 1.27 | ||
| db file parallel write | 17 | 0.09 | ||
| 14:24:00 (144.0 min) | 3,344 | CPU + Wait for CPU | 3,085 | 15.68 |
| db file sequential read | 228 | 1.16 | ||
| db file parallel write | 20 | 0.10 | ||
| 16:48:00 (144.0 min) | 2,998 | CPU + Wait for CPU | 2,382 | 12.10 |
| db file sequential read | 517 | 2.63 | ||
| db file parallel write | 35 | 0.18 | ||
| 19:12:00 (144.0 min) | 814 | CPU + Wait for CPU | 631 | 3.21 |
| db file sequential read | 165 | 0.84 | ||
| db file parallel write | 8 | 0.04 |


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Jupyter, pandas, scikit-learn, NumPy, Plotly, Python, R, MATLAB/Octave


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--- layout: default title: Installation materialicon: file_download order: 4 ---
First, clone the project from GitHub. You can do that from command line using git clone https://github.com/linkedpipes/etl
or you can use TortoiseGit.
Once the project is cloned, build it using Maven's mvn install
command.
Copy the configuration.properties.sample
file to deploy/configuration.properties
and edit it in your favorite text editor, setting the paths to working directories, etc.
Once configured, you are ready to go. Currently, the ETL project consists of three components, which are ran individually from the deploy folder. Either run them in three separate console windows, or in shell or Cygwin on the background, e.g. ./executor.sh &
, ./storage.sh &
, ./executor-monitor.sh &
and ./frontend.sh &
. The frontend should now run on http://localhost:8080
or the port used in the configuration.


A Vista-esque feature of OS X Leopard is that it tags web downloads (not just from Safari) as such and then warns you about running downloaded apps or scripts. Archived (e.g. zipped) files inherit the tag from their tagged container.
This is an annoyance to power users. Luckily, being a power user, I can do something about it. ;)
Stick Unquarantine.scpt in ~/Library/Scripts/Folder Action Scripts
. You’ll probably need to create the Scripts
directory and its subdirectory, e.g. with mkdir -p ~/Library/Scripts/Folder\ Action\ Scripts
.
Go to ~/Downloads
or wherever your downloads go.
Right-click, More > Configure Folder Actions…
. Check “Enable Folder Actions”. Attach the “Unquarantine” action to the folder.
And that should be it.
Note that, quite obviously, the folder action only applies to that folder. If you download a file to a directory without this folder action attached, Leopard is free to nag again.
The code
Basically, the script just runs
1
|
|
Do xattr -h
in a terminal for help (just xattr
is silent, and there’s no man
page).
The code:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 |
|


---
layout: default
redirct_from: "/zwiftpower"
---
ZwiftPower Guide
How to fully connect to ZwiftPower, written by Vincent Williams.
With the new GDPR standard for data privacy, the steps to connect your Zwift account to ZwiftPower
have changed a bit. Luckily we’re here to guide you through it!
Step 1. Opt In
- Log in and head over to Zwift’s connection page.
- Scroll down and click “Opt-In” under the ZwiftPower logo. This means you consent to
sharing your event results and Zwift profile on ZwiftPower.
Step 2. Register with ZwiftPower
- Head over to ZwiftPower, click on the top right icon and select
“Register”. Read the terms and conditions, and if you agree, select
“I agree to these terms”.
- Enter your preferred username, email address, and site password, then select your time zone. Afterwards,
type in the security confirmation code, and click “Submit”.
Step 3. Find Your Zwift ID
- Click the person icon on the top right of the page to log in. Once logged in, click “Connect” at
the top of the page.
- You’ll now need to find your Zwift ID. You can click on the “How do I find my Zwift ID?”
button to read a guide on how to find it. If you’re on a PC or Mac you can find it in your Documents folder:
Documents → Zwift → CP
The folder names here, e.g. user123456, are for every Zwifter who has used your computer.
- Enter your Zwift ID and click “Connect”.
Step 4. Connect Account to ZwiftPower
- Add your Zwift ID to your surname. So if your name is John Everyman and your ID is 123456, you’ll change your
name to John Everyman123456. You can edit your profile online.
- After you add your Zwift ID number to your name, wait about a minute, then go back to the ZwiftPower page and click
“Connect my account”. You can remove the number from your user profile once connected.
Step 5. Complete Consent Form
- Read the consent form and privacy statement, then click the corresponding box stating you agree to give ZwiftPower
access to the aforementioned information. Click “Agree” and then you’re done! Join
events and get ready to see your results on ZwiftPower.


| 1 |
//
|
|
| 2 |
// RouteComposer
|
|
| 3 |
// CompleteFactory.swift
|
|
| 4 |
// https://github.com/ekazaev/route-composer
|
|
| 5 |
//
|
|
| 6 |
// Created by Eugene Kazaev in 2018-2022.
|
|
| 7 |
// Distributed under the MIT license.
|
|
| 8 |
//
|
|
| 9 |
// Become a sponsor:
|
|
| 10 |
// https://github.com/sponsors/ekazaev
|
|
| 11 |
//
|
|
| 12 |
|
|
| 13 |
import Foundation
|
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| 14 |
import UIKit
|
|
| 15 |
|
|
| 16 |
/// The `CompleteFactory` instance is used by the `CompleteFactoryAssembly` as a `ContainerFactory` to
|
|
| 17 |
/// pre-populate the children view controllers instead of the `Router`.
|
|
| 18 |
public struct CompleteFactory<FC: ContainerFactory>: ContainerFactory, CustomStringConvertible {
|
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| 19 |
|
|
| 20 |
// MARK: Associated types
|
|
| 21 |
|
|
| 22 |
public typealias ViewController = FC.ViewController
|
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| 23 |
|
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| 24 |
public typealias Context = FC.Context
|
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| 25 |
|
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| 26 |
// MARK: Properties
|
|
| 27 |
|
|
| 28 |
private var factory: FC
|
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| 29 |
|
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| 30 |
var childFactories: [PostponedIntegrationFactory]
|
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| 31 |
|
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| 32 |
// MARK: Methods
|
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| 33 |
|
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| 34 |
init(factory: FC, childFactories: [PostponedIntegrationFactory]) {
|
17x |
| 35 |
self.factory = factory
|
17x |
| 36 |
self.childFactories = childFactories
|
17x |
| 37 |
}
|
17x |
| 38 |
|
|
| 39 |
public mutating func prepare(with context: FC.Context) throws {
|
11x |
| 40 |
try factory.prepare(with: context)
|
11x |
| 41 |
childFactories = try childFactories.map {
|
17x |
| 42 |
var factory = $0
|
17x |
| 43 |
try factory.prepare(with: AnyContextBox(context))
|
17x |
| 44 |
return factory
|
17x |
| 45 |
}
|
17x |
| 46 |
}
|
11x |
| 47 |
|
|
| 48 |
public func build(with context: FC.Context, integrating coordinator: ChildCoordinator) throws -> FC.ViewController {
|
13x |
| 49 |
var finalChildFactories: [(factory: PostponedIntegrationFactory, context: AnyContext)] = childFactories.map { (factory: $0, context: AnyContextBox(context)) }
|
21x |
| 50 |
finalChildFactories.append(contentsOf: coordinator.childFactories)
|
13x |
| 51 |
return try factory.build(with: context, integrating: ChildCoordinator(childFactories: finalChildFactories))
|
13x |
| 52 |
}
|
13x |
| 53 |
|
|
| 54 |
public var description: String {
|
7x |
| 55 |
String(describing: factory)
|
7x |
| 56 |
}
|
7x |
| 57 |
|
|
| 58 |
}
|
|


# Lo-Dash v1.0.2
A utility library delivering consistency, [customization](http://lodash.com/custom-builds), [performance](http://lodash.com/benchmarks), & [extras](http://lodash.com/#features).
## Download
- Lo-Dash builds (for modern environments):

[Development](https://raw.github.com/lodash/lodash/v1.0.2/dist/lodash.js) and [Production](https://raw.github.com/lodash/lodash/v1.0.2/dist/lodash.min.js)
- Lo-Dash compatibility builds (for legacy and modern environments):

[Development](https://raw.github.com/lodash/lodash/v1.0.2/dist/lodash.compat.js) and [Production](https://raw.github.com/lodash/lodash/v1.0.2/dist/lodash.compat.min.js)
- Underscore compatibility builds:

[Development](https://raw.github.com/lodash/lodash/v1.0.2/dist/lodash.underscore.js) and [Production](https://raw.github.com/lodash/lodash/v1.0.2/dist/lodash.underscore.min.js)
- For optimal file size, [create a custom build](http://lodash.com/custom-builds) with only the features you need
## Dive in
We’ve got [API docs](http://lodash.com/docs), [benchmarks](http://lodash.com/benchmarks), and [unit tests](http://lodash.com/tests).
For a list of upcoming features, check out our [roadmap](https://github.com/lodash/lodash/wiki/Roadmap).
The full changelog is available [here](https://github.com/lodash/lodash/wiki/Changelog).
## Installation and usage
In browsers:
`html

`
Using [npm](http://npmjs.org/):
npm install -g lodash npm link lodash ```
To avoid potential issues, update npm before installing Lo-Dash:
`bash
npm install npm -g
`
In [Node.js](http://nodejs.org/) and [RingoJS v0.8.0+](http://ringojs.org/):
```js var _ = require(‘lodash’);
// or as a drop-in replacement for Underscore var _ = require(‘lodash/lodash.underscore’); ```
Note: If Lo-Dash is installed globally, run [npm link lodash](http://blog.nodejs.org/2011/03/23/npm-1-0-global-vs-local-installation/) in your project’s root directory before requiring it.
In [RingoJS v0.7.0-](http://ringojs.org/):
`js
var _ = require('lodash')._;
`
In [Rhino](http://www.mozilla.org/rhino/):
`js
load('lodash.js');
`
In an AMD loader like [RequireJS](http://requirejs.org/):
- ‘paths’: {
- ‘underscore’: ‘path/to/lodash’
}
}, [‘underscore’], function(_) {
console.log(_.VERSION);
});¶
## Resources
For more information check out these articles, screencasts, and other videos over Lo-Dash:
- Posts
- [Say “Hello” to Lo-Dash](http://kitcambridge.be/blog/say-hello-to-lo-dash/)
- Videos
- [Introducing Lo-Dash](https://vimeo.com/44154599)
- [Lo-Dash optimizations and custom builds](https://vimeo.com/44154601)
- [Lo-Dash’s origin and why it’s a better utility belt](https://vimeo.com/44154600)
- [Unit testing in Lo-Dash](https://vimeo.com/45865290)
- [Lo-Dash’s approach to native method use](https://vimeo.com/48576012)
- [CascadiaJS: Lo-Dash for a better utility belt](http://www.youtube.com/watch?v=dpPy4f_SeEk)
## Features
- AMD loader support ([RequireJS](http://requirejs.org/), [curl.js](https://github.com/cujojs/curl), etc.)
- [_(…)](http://lodash.com/docs#_) supports intuitive chaining
- [_.at](http://lodash.com/docs#at) for cherry-picking collection values
- [_.bindKey](http://lodash.com/docs#bindKey) for binding [“lazy” defined](http://michaux.ca/articles/lazy-function-definition-pattern) methods
- [_.cloneDeep](http://lodash.com/docs#cloneDeep) for deep cloning arrays and objects
- [_.contains](http://lodash.com/docs#contains) accepts a fromIndex argument
- [_.forEach](http://lodash.com/docs#forEach) is chainable and supports exiting iteration early
- [_.forIn](http://lodash.com/docs#forIn) for iterating over an object’s own and inherited properties
- [_.forOwn](http://lodash.com/docs#forOwn) for iterating over an object’s own properties
- [_.isPlainObject](http://lodash.com/docs#isPlainObject) checks if values are created by the Object constructor
- [_.merge](http://lodash.com/docs#merge) for a deep [_.extend](http://lodash.com/docs#extend)
- [_.partial](http://lodash.com/docs#partial) and [_.partialRight](http://lodash.com/docs#partialRight) for partial application without this binding
- [_.template](http://lodash.com/docs#template) supports [“imports” options](http://lodash.com/docs#templateSettings_imports), [ES6 template delimiters](http://people.mozilla.org/~jorendorff/es6-draft.html#sec-7.8.6), and [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)
- [_.where](http://lodash.com/docs#where) supports deep object comparisons
- [_.clone](http://lodash.com/docs#clone), [_.omit](http://lodash.com/docs#omit), [_.pick](http://lodash.com/docs#pick), [and more…](http://lodash.com/docs “_.assign, _.cloneDeep, _.first, _.initial, _.isEqual, _.last, _.merge, _.rest”) accept callback and thisArg arguments
- [_.contains](http://lodash.com/docs#contains), [_.size](http://lodash.com/docs#size), [_.toArray](http://lodash.com/docs#toArray), [and more…](http://lodash.com/docs “_.at, _.countBy, _.every, _.filter, _.find, _.forEach, _.groupBy, _.invoke, _.map, _.max, _.min, _.pluck, _.reduce, _.reduceRight, _.reject, _.shuffle, _.some, _.sortBy, _.where”) accept strings
- [_.filter](http://lodash.com/docs#filter), [_.find](http://lodash.com/docs#find), [_.map](http://lodash.com/docs#map), [and more…](http://lodash.com/docs “_.countBy, _.every, _.first, _.groupBy, _.initial, _.last, _.max, _.min, _.reject, _.rest, _.some, _.sortBy, _.sortedIndex, _.uniq”) support “_.pluck” and “_.where” callback shorthands
## Support
Lo-Dash has been tested in at least Chrome 5~24, Firefox 1~18, IE 6-10, Opera 9.25-12, Safari 3-6, Node.js 0.4.8-0.8.20, Narwhal 0.3.2, PhantomJS 1.8.1, RingoJS 0.9, and Rhino 1.7RC5.


Try out our Premium Member services: Virtual Legal Assistant, Query Alert Service and an ad-free experience. Free for one month and pay only if you like it.
ORISSA HIGH COURT: CUTTACK. W.P.(C). NO. 23228 OF 2012 AND W.P. (C) NO. 1066 OF 2013 In the matter of applications under Articles 226 and 227 of the Constitution of India. -------------- In WPC 23228/2012 Rabindra Prasad Pattnaik ...... Petitioner -Versus- State Pollution Control Board, Odisha and others ...... Opp. parties For Petitioner : M/s. A.A.Das, S.Mishra, P.Mishra, D.Sahoo and B.Pani. For opp. parties: M/s. R. K.Rath, Sr. Advocate, G.Mukherjee, A.C.Panda, S.D.Ray and S.Barik. (For O.P. No. 4) M/s. Bikram Pratap Das & S.K. Mishra. (For O.Ps 1 & 2). M/s. K.P.Mishra, S.Mohapatra, T.P.Tripathy, & P.K. Sahu, (For Intervenors) In WPC 1066/2013 Gokul Chandra Debata & others .... Petitioners -Versus- State Pollution Control Board, Odisha and others ...... Opp. parties For Petitioners : M/s. A. A.Das, K.P.Mishra B.K. Parida & A.N. Pattnaik. For opp. parties: - 2 --------------------------------- Decided on 22.02.2013 ------------------------------------ PRESENT : THE HONOURABLE SHRI JUSTICE M.M. DAS AND THE HONOURABLE LSHRI JUSTICE C.R.DASH ORDER
M. M. DAS, J. As both the aforesaid writ petitions have been filed for the self-same reliefs, they were heard together and are disposed of by this common order.
2. W.P. (C) No. 23228 of 2012 has been filed by one Rabindra Prasad Pattnaik in the nature of Public Interest Litigation against the opp. parties to implement the order under Annexure-3 passed by the State Pollution Control Board, Odisha and to direct the opp. party no. 3 - Collector and District Magistrate, Angul to stop operation of the plant of the opp. party no. 4 pursuant to the order of the State Pollution Control Board under Annexure-3 and further, to direct the State and its authorities - opp. parties 1 to 3 to implement the Action Plan relating to control of pollution as at Annexure-1 in the Angul - Talcher area as well as take stringent action against the opp. party n. 4 for violating the order under Annexure-3.
3. On 13.12.2012, this Court in Misc. Case No. 19969 of 2012 arising out of W.P. (C) No. 23228 of 2012, has passed an interim order to the following effect:-
" Pending consideration of this Misc. Case, as an interim measure, this Court directs the 3 Regional Officer, State Pollution Control Board - opposite party no. 2 to see that the order dated 01.6.2012 under Annexure-3 shall be implemented against opposite party no. 4 by taking necessary police protection., if necessary, and submit a report before this Court on the reopening day after the Winter Holidays".
Thereafter, a Misc. Case, being Misc. Case No. 21387 of 2012 has been filed by the opp. party no. 4 in the writ petition to vacate the interim order passed on 13.12.2012. Misc. Case No. 21469 of 2012 has been filed by some of the villagers of Ekagharia under Samal Barrage, Kaniha Police Station in the district of Angul for intervening in the matter.
4. W.P. (C) No. 1066 of 2013 has been filed by the persons, who have filed the intervention application in W.P. (C) No. 23228 of 2012 as a separate writ petition bringing to the notice of the Court the further developments in the matter and praying to declare the joint verification report under Annexure-9 dated 15.11.2012 as illegal and consent order dated 16.11.2012 issued to the opp. party no. 4 also as illegal and to quash the same.
5. Facts disclose that the opp. party no. 4 has a Coal Tar Refinery unit at Ekagharia in the district of Angul and produces Coal Tar and other industrial chemicals as bi-products. The main objection of the petitioners with regard to running of the said unit is that, the said unit without adhering to the pollution control norms being allowed to run is causing heavy pollution in the area endangering the lives and properties of the people of the locality. It has been brought to the notice of the Court that the 4 petitioner in W.P. (C) No. 23228 of 2012 also moved the Green Tribunal on 13.12.2012 when this Court passed the interim order.
6. Mr. Rath, learned senior counsel appearing for the opp. party no. 4 vehemently urged that the petitioner having sought for similar remedies before two forums, i.e., this Court as well as the Green Tribunal at Delhi, the writ petition is not maintainable. He further submitted that the petitioner having suppressed the said fact before this Court, on that score also, the writ petition should be dismissed. However, considering the nature of allegations made in the writ petition, we proposed to hear the writ petition on merits.
7. Mr. A.A. Das, learned counsel for the petitioner in W.P. (C) No. 23228 of 2012 submitted that the State Pollution Control Board on 1.6.2012 under Annexure-3 intimated the opp. party no. 4 that the unit was allowed to operate on a trial basis for a period of three months on 7.5.2012 with some specific conditions to comply within a time frame. The opp. party no. 4 intimated on 15.5.2012 that it has complied with the condition nos. 5, 6 and 7. After receiving a number of public complaints, the plant was inspected on 25.5.2012 by the Officials of the State Pollution Control Board. During such inspection, it was observed that the plant was in operation in a full-fledged manner and the opp. party no. 4 has failed to comply with most of the conditions imposed in the above trial run order. The same being in violation 5 of the order under sections 25 and 26 of the Water (Prevention and Control of Pollution) Act, 1974 and Section 21 of the Air (Prevention and Control of Pollution) Act, 1981 and further, the opp. party no. 4 having given false information to the Board that it has complied with the conditions, it attracts the penal provision under section 42 (f) of the Water (Prevention and Control of Pollution) Act, 1974 and section 38 (f) of the Air (Prevention and Control of Pollution) Act, 1981. Basing on the said inspection report, the Regional Officer of the State Pollution Control Board directed the opp. party no. 4 to stop operation of the plant forthwith till compliance of all the conditions imposed in the trial run order is made and report of compliance is submitted to the Regional Officer with immediate effect. According to Mr. Das, basing on the said order, the interim order dated 13.12.2012 was passed. He further contended that till date, the opp. party no. 4 having not complied with the same, it should not be allowed to run the unit as the pollution caused by the said unit is endangering the lives of the people living in the locality.
8. A counter affidavit has been filed by the State Pollution Control Board, inter alia, stating that after receipt of the order of this Court dated 13.12.2012, a letter dated 17.12.2012 was issued to the opp. party no. 4 directing to stop operation of its Coal Tar Refinery unit. To further ensure stoppage of operation, the said unit was sealed on 19.12.2012 by the Executive 6 Magistrate, Kaniha in presence of other authorities. This fact was intimated to the Member, Secretary of the State Pollution Control Board by letter dated 20.12.2012. The Green Tribunal by order dated13.12.2012 directed the Collector and District Magistrate, Angul to implement the order dated 1.6.2012 by the Pollution Control Board.
9. It appears from the Misc. Case filed for vacation of interim order by the opp. party no. 4 as well as the annexures made to W.P. (C) No. 1066 of 2013 that on 10.10.2012, the Regional Officer of the State Pollution Control Board, Regional Office noticed the opp. party no. 4 intimating it that for the purpose of making an enquiry under sections 25 and 26, the officers named therein and the persons authorized by the Board to assist them shall inspect the water work, Sewage Work, Water Treatment Plant, Factory, Disposal system and any other parts thereof or pertaining thereto under the management, control of opp. party no. 4 on the same day. Accordingly, an inspection was conducted and a joint inspection was also conducted by the officials of the State along with the official of the Regional Pollution Control Board and some villagers on 15.11.2012 and a joint inspection report was prepared. The team suggested the industry to carry out the following works:-
"(i) To cover the raw material unloading tank with suitable cover within one month time;7
(ii) The industry shall take all precautionary and preventive measures to reduce odour nuisance.
(iii) To develop green belt around the plant premises and plant more trees inside the plant premises".
10. It appears from the letter dated 16.11.2012 of the Regional Officer, State Pollution Control Board, Regional Office, annexed to the above Misc. Case for vacation of stay as Annexure-E/4 that the opp. party no. 4 has been granted permission to operate the Coal Tar Refinery unit up to 31.3.2013 with the conditions stipulated therein. It has been further stated in the said letter that in case of failure of pollution control devices or non- compliance of the conditions stipulated in the earlier consent order and the specific conditions mentioned therein, steps will be taken either by the industry for stoppage of process equipment under intimation to the Board or the Board will take necessary action against the unit without further intimation and at the same time grant of consent to operate beyond the permitted period shall be considered after verifying satisfactory compliance to the conditions of the Board and other issues. The various conditions mentioned in the said letter are as follows:-
"(1) Adequate air pollution control devices shall be installed, operated and maintained for cleaning of the gas emanated from heating of distillation chamber so as to meet the prescribed standard of the Board.
(2) The ambient air quality shall conform to the National Ambient Air Quality standard values.8
(3) Utmost care shall be taken to ensure full condensation of the products and there shall be no leakage of product/fumes/gases in the process of distillation, condensation and collection to avoid odour nuisance. Heating chambers, condensers and connecting pipe lines shall be periodically checked regarding leakages and maintained properly according to the requirement to avoid odour nuisance in the locality. In case of any episodal leakages, immediate action shall be taken for necessary repair and maintenance with shut-down of the plant, if required to avoid odour nuisance in the locality.
(4) Handling of coal tar, distilled fraction and pitch handling shall be done safely without affecting air/water at outside the factory premises. (5) There shall not be discharge of any process effluent to outside the factory premises.
(6) The effluent collected in the form of condensate during initial stage of distillation shall be collected in an impervious tank and adequately treated. Under no circumstance, it shall be discharged to outside land or inland water surface.
(7) Water used in the primary condenser shall be completely recycled in the condenser process. (8) Floor of heating chambers and distillers shall be cemented.
(9) The industry shall ensure that there shall not be any leakages of gas/vapour during loading if tar into the containers and during transportation.
(10) The raw material unloading tanks shall be covered on the top.
(11) The boilers and coal crusher sheds shall be enclosed from all sides.
(12)The industry shall enclose the cooling water recirculation tank from 3 sides to prevent escape of vapour to the surrounding areas.
9
(13) The light creosote oil tanks shall be enclosed on two sides towards the village to obstruct the flow of odour if any to outside.
(14) The Naptha sludge shall be bagged in polythene bags and kept under shed.
(15) The approach road to the plant and the internal roads shall be metalled and maintained properly.
(16) The industry shall grow a thick green belt around the boundary wall and plant trees both sides of approach road.
(17) The unit shall improve house keeping within the plant premises.
(18) The industry shall abide by the provisions of Environment (Protection) Act, 1986, amendments made thereafter and Rules framed thereunder."
11. After hearing learned counsel for the parties and on perusal of the documents produced in both the writ petitions and further considering the above developments, we dispose of both the writ petitions directing the authorities of the State Pollution Control Board - opp. party no. 2 to make a fresh inspection of the unit of the petitioner within a period of two weeks hence in order to find out as to how far the opp. party no. 4 has proceeded in fulfilling the conditions mentioned in the consent letter dated 16.11.2012 and further inspecting as to whether any pollution is being caused by the said unit, either air or water as per the pollution control norms. If they find that the opp. party no. 4 has proceeded to fulfil the conditions imposed in the said letter dated 16.11.2012 to some extent and they 10 expect that the opp. Party no. 4 shall be able to fulfil all the conditions fully by 31.3.2013 till which time they were allowed to operate the unit and further at present, there is no pollution caused by the unit or the pollution which is caused (air or water) will not endanger the lives and properties of the people residing nearby taking note of the distance and natural barriers, if any, between the industry and the nearest habitats , they shall grant a fresh consent letter to the opp. party no. 4 allowing it to operate the unit. However, during inspection, if it is found that the unit causes such pollution, both air and water, which is beyond the limits prescribed in the aforesaid Air (Prevention and Control of Pollution) Act, 1986 and the Water (Prevention of Control of Pollution) Act, 1974, such permission to run the unit shall not be granted by them to the opp. party no. 4 till they fulfil the conditions enumerated in the consent letter dated 16.11.2012. This Court further observes that as the order passed by the Regional Office of the State Pollution Control Board is appealable before the Appellate Authority, any party aggrieved by the order to be passed by the opp. party no. 2 pursuant to the above directions may prefer an appeal as provided under the Acts. It is needless to mention that for the purpose of inspection, the opp. party no. 4 shall be permitted to operate the unit during the course of inspection.
11
13. With the aforesaid directions, both the writ petitions stand disposed of.
........................
M.M. Das, J.
C.R. DASH, J. I agree. ............................ C.R. Dash, J. Orissa High Court, Cuttack. February 22nd , 2013/ Biswal


Jet Airways creditors committee may give Synergy Group four more weeks to submit bid: Report
The CoC, which consisted of lenders of the now-defunct airline, met on November 19 to discuss the South American company's request.
The Committee of Creditors (CoC) of Jet Airways may give Synergy Group another four weeks to submit its bid, CNBC-TV18 reported quoting sources.
Moneycontrol had earlier reported that Synergy had requested for an extension of the deadline by three or four weeks.
Also Read | Jet Airways insolvency: Will lenders give another extension to Synergy?
The CoC, which consisted of lenders of the now-defunct airline, met on November 19 to discuss the South American company's request. It will vote on the proposal to allow an extension to Synergy for bid submission by November 21.
Banks may now ask the company, which is the sole contendor, to submit its bid for the airline by December 16, CNBC-TV18 reported.
The resolution professional may also seek a 90-day extension for resolution of Jet Airways under the National Company Law Tribunal (NCLT).Get access to India's fastest growing financial subscriptions service Moneycontrol Pro for as little as Rs 599 for first year. Use the code "GETPRO". Moneycontrol Pro offers you all the information you need for wealth creation including actionable investment ideas, independent research and insights & analysis For more information, check out the Moneycontrol website or mobile app.


--- layout: archive title: Zulip Chat Archive permalink: /stream/113489-new-members/topic/Look.20for.20lemma.html ---
How do people look for potential lemma that might be useful? I find searching through lean2 and mathlib quite inefficient.
Have you tried out library_search
and find
described here?
Oh and suggest
as well.
Oh and
suggest
as well.
Cool, thanks.
{% endraw %}Last updated: Apr 24 2020 at 19:02 UTC


{% extends "base.html" %} {% block lcrContent %}
Add New Retail Destination
Please fill in the following form to define a new retail destination. After it is saved in the system, you will be able to perform additional actions, like adding E164 prefixes.


Program Listing for File pool_allocator.hpp¶
↰ Return to documentation for file (include/wrench/memory/pool_allocator.hpp
)
//==--- wrench/memory/pool_allocator.hpp ------------------- -*- C++ -*- ---==//
//
// Wrench
//
// Copyright (c) 2020 Rob Clucas
//
// This file is distributed under the MIT License. See LICENSE for details.
//
//==------------------------------------------------------------------------==//
//
//
//==------------------------------------------------------------------------==//
#ifndef WRENCH_MEMORY_POOL_ALLOCATOR_HPP
#define WRENCH_MEMORY_POOL_ALLOCATOR_HPP
#include "memory_utils.hpp"
#include <atomic>
#include <cstddef>
#include <cstdio>
namespace wrench {
//==--- [single-threaded free-list] ----------------------------------------==//
class Freelist {
public:
//==--- [traits] ---------------------------------------------------------==//
static constexpr bool resettable = false;
//==--- [construction] ---------------------------------------------------==//
Freelist() = default;
~Freelist() noexcept {
if (head_ != nullptr) {
head_ = nullptr;
}
}
Freelist(
const void* start,
const void* end,
size_t element_size,
size_t alignment) noexcept
: head_(initialize(start, end, element_size, alignment)) {}
// clang-format off
Freelist(Freelist&& other) noexcept = default;
auto operator=(Freelist&& other) noexcept -> Freelist& = default;
//==--- [deleted] --------------------------------------------------------==//
Freelist(const Freelist&) = delete;
auto operator=(const Freelist&) -> Freelist& = delete;
// clang-format on
//==--- [interface] ------------------------------------------------------==//
auto pop_front() noexcept -> void* {
Node* const popped_head = head_;
head_ = popped_head ? popped_head->next : nullptr;
return static_cast<void*>(popped_head);
}
auto push_front(void* ptr) noexcept -> void {
if (ptr == nullptr) {
return;
}
Node* const pushed_head = static_cast<Node*>(ptr);
pushed_head->next = head_;
head_ = pushed_head;
}
private:
struct Node {
Node* next = nullptr;
};
Node* head_ = nullptr;
static auto initialize(
const void* start, const void* end, size_t element_size, size_t alignment)
-> Node* {
// Create the first and second elements:
void* const first = align_ptr(start, alignment);
void* const second = align_ptr(offset_ptr(first, element_size), alignment);
const size_t size = uintptr_t(second) - uintptr_t(first);
const size_t elements = (uintptr_t(end) - uintptr_t(first)) / size;
// Set the head of the list:
Node* head = static_cast<Node*>(first);
// Initialize the rest of the list:
Node* current = head;
for (size_t i = 1; i < elements; ++i) {
Node* next = static_cast<Node*>(offset_ptr(current, size));
current->next = next;
current = next;
}
assert(
offset_ptr(current, size) <= end &&
"Freelist initialization overflows provided arena!");
current->next = nullptr;
return head;
}
};
//==--- [multi-threaded free list] -----------------------------------------==//
class ThreadSafeFreelist {
struct Node {
std::atomic<Node*> next;
};
static constexpr size_t head_ptr_alignment_bytes = 8;
struct alignas(head_ptr_alignment_bytes) HeadPtr {
int32_t offset;
uint32_t tag;
};
using AtomicHeadPtr = std::atomic<HeadPtr>;
public:
//==--- [traits] ---------------------------------------------------------==//
static constexpr bool resettable = false;
//==--- [construction] ---------------------------------------------------==//
ThreadSafeFreelist() noexcept = default;
ThreadSafeFreelist(
const void* start,
const void* end,
size_t element_size,
size_t alignment) noexcept {
assert(head_.is_lock_free());
void* const first = align_ptr(start, alignment);
void* const second = align_ptr(offset_ptr(first, element_size), alignment);
// Check that the resulting pointers are in the arena, and ordered
// correctly:
assert(first >= start && first < end);
assert(second >= start && second > first && second < end);
const size_t size = uintptr_t(second) - uintptr_t(first);
const size_t elements = (uintptr_t(end) - uintptr_t(first)) / size;
// Set the head to the first element, and the storage to the head.
Node* head = static_cast<Node*>(first);
storage_ = head;
// Link the list:
Node* current = head;
for (size_t i = 1; i < elements; ++i) {
Node* next = static_cast<Node*>(offset_ptr(current, size));
current->next = next;
current = next;
}
// Ensure that everything fits in the allocation arena.
assert(current < end);
assert(offset_ptr(current, size) <= end);
current->next = nullptr;
// Set the head pointer as the offset from the storage to the aligned head
// element, and set the initial tag to zero.
head_.store({static_cast<int32_t>(head - storage_), 0});
}
ThreadSafeFreelist(ThreadSafeFreelist&& other) noexcept
: head_(other.head_.load(std::memory_order_relaxed)),
storage_(std::move(other.storage_)) {
other.head_.store({-1, 0}, std::memory_order_relaxed);
other.storage_ = nullptr;
}
auto operator=(ThreadSafeFreelist&& other) noexcept -> ThreadSafeFreelist& {
if (this != &other) {
head_.store(
other.head_.load(std::memory_order_relaxed), std::memory_order_relaxed);
storage_ = std::move(other.storage_);
other.head_.store({-1, 0}, std::memory_order_relaxed);
other.storage_ = nullptr;
}
return *this;
}
//==--- [deleted] --------------------------------------------------------==//
// clang-format off
ThreadSafeFreelist(const ThreadSafeFreelist&) = delete;
auto operator=(const ThreadSafeFreelist&) -> ThreadSafeFreelist& = delete;
// clang-format on
//==--- [interface] ------------------------------------------------------==//
auto pop_front() noexcept -> void* {
Node* const storage = storage_;
// Here we acquire to synchronize with other popping threads which may
// succeed first, and well as with other pushing threads which may push
// before we pop, in which case we want to try and pop the newly pushed
// head.
HeadPtr current_head = head_.load(std::memory_order_acquire);
while (current_head.offset >= 0) {
// If another thread tries to pop, and does it faster than here, then this
// pointer will contain data from the application. However, the new_head
// which we compute just now, using this next pointer, will be discarded
// because _head will have been replaced, and hence current_head will not
// compare equal with _head, and thus the compare_exhange will fail and we
// will try again.
Node* const next =
storage[current_head.offset].next.load(std::memory_order_relaxed);
// Get the new head element. If the next pointer is a nullptr, then we are
// at the end of the list, and if we succeed then another thread cannot
// pop, so we set the offset to -1 so that on success, if _head is
// replaced with new_head, then other threads will not execute this loop
// and just return a nullptr.
const HeadPtr new_head{
next ? int32_t(next - storage) : -1, current_head.tag + 1};
// If another thread was trying to pop, and got here just before us, then
// the _head element would have moved, and it will have a different .tag
// value than the tag value of current_head, so this will fail, and we
// will try again.
//
// This is also how we avoid the ABA problem, where another thread might
// have popped, and then pushed, leaving the head in the same place as the
// current_head we now have, but with different data. The tag will prevent
// this.
//
// Also, we need memory_order_release here to make the change visible on
// success, for threads which load the upated _head. We use
// memory_order_acquire for the failure case, because we want to
// synchronize as at the beginning of the function.
if (head_.compare_exchange_weak(
current_head,
new_head,
std::memory_order_release,
std::memory_order_acquire)) {
// Lastly, we need the assert here for that case that another thread
// performed a pop between our load of _head and _head.next. In this
// case, the next that we loaded will contain application data, and
// therefore could be invalid. So we check that we either have a
// nullptr, in the case that we are at the last element, or that the
// next pointer is in the memory arena, otherwise something went wrong.
assert(!next || next >= storage);
break;
}
}
// Either we have the head, and we can return it, or we ran out of elements,
// and we have to return a nullptr.
// clang-format off
void* p = (current_head.offset >= 0)
? storage + current_head.offset : nullptr;
// clang-format on
return p;
}
auto push_front(void* ptr) noexcept -> void {
Node* const storage = storage_;
assert(ptr && ptr >= storage);
Node* const node = static_cast<Node*>(ptr);
// Here we don't care about synchronization with stores to _head from other
// threads which are either trying to push or to pop. If that happens, the
// compare exchange will fail and we will just try with the newly updated
// head.
HeadPtr current_head = head_.load(std::memory_order_relaxed);
HeadPtr new_head = {int32_t(node - storage), current_head.tag + 1};
// Here we use memory_order_release in the success case, so that other
// threads can synchronize with the updated head, but we don't care about
// synchronizing the update of the current head because as above, if another
// thread races ahead, we will just try again. The memory ordering with
// respect to the current_head update is not important.
do {
// clang-format off
new_head.tag = current_head.tag + 1;
Node* const next = (current_head.offset >= 0)
? (storage + current_head.offset) : nullptr;
node->next.store(next, std::memory_order_relaxed);
// clang-format on
} while (!head_.compare_exchange_weak(
current_head,
new_head,
std::memory_order_release,
std::memory_order_relaxed));
}
private:
AtomicHeadPtr head_{};
Node* storage_ = nullptr;
};
//==--- [pool allocator] ---------------------------------------------------==//
// clang-format off
template <
size_t ElementSize,
size_t Alignment,
typename FreelistImpl = Freelist>
class PoolAllocator {
private:
// clang-format off
static constexpr size_t element_size = ElementSize;
static constexpr size_t alignment = Alignment;
// clang-format on
public:
//==--- [traits] ---------------------------------------------------------==//
static constexpr bool resettable = FreelistImpl::resettable;
//==--- [construction] ---------------------------------------------------==//
// clang-format off
PoolAllocator() noexcept = delete;
~PoolAllocator() noexcept = default;
// clang-format on
PoolAllocator(const void* begin, const void* end) noexcept
: freelist_(begin, end, element_size, alignment), begin_(begin), end_(end) {}
template <typename Arena>
explicit PoolAllocator(const Arena& arena) noexcept
: PoolAllocator(arena.begin(), arena.end()) {}
PoolAllocator(PoolAllocator&& other) noexcept = default;
auto operator=(PoolAllocator&& other) noexcept -> PoolAllocator& = default;
//==--- [deleted] --------------------------------------------------------==//
// clang-format off
PoolAllocator(const PoolAllocator&) = delete;
auto operator=(const PoolAllocator&) -> PoolAllocator& = delete;
// clang-format on
//==--- [interface] ------------------------------------------------------==//
auto alloc(size_t size = element_size, size_t align = alignment) noexcept
-> void* {
assert(size <= element_size && align <= alignment);
return freelist_.pop_front();
}
auto free(void* ptr, size_t = element_size) noexcept -> void {
freelist_.push_front(ptr);
}
auto owns(void* ptr) const noexcept -> bool {
return uintptr_t(ptr) >= uintptr_t(begin_) &&
uintptr_t(ptr) < uintptr_t(end_);
}
auto reset() noexcept -> void {
if constexpr (resettable) {
freelist_.reset();
}
}
private:
FreelistImpl freelist_;
const void* begin_ = nullptr;
const void* end_ = nullptr;
};
} // namespace wrench
#endif // WRENCH_MEMORY_POOL_ALLOCATOR_HPP


New Drilling Rules
Return
Domain
url pattern
Alias
encoding
UTF8
GB2312
type
Brand
Node
Extract content
Yes
No
jshandle
Yes
No
cookie
Inject jquery
Yes
No
Load img
Yes
No
Drill rules
script
navigate rule
stop page
priority
weight
schedule interval
active
Yes
No
seed
schedule rule


Beginner’s Guide To React Part 2
Beginner’s Guide To React Part 2
As I learn to build web applications in React I will blog about it in this series in an attempt to capture the questions that a complete beginner might encounter that a more seasoned developer would take for granted!
For more resources visit:
A JavaScript library for building user interfaces React makes it painless to create interactive UIs. Design simple…github.com
Use this appendix to get any prerequisite concepts and terminology under your belt:
Here I will walk through a demo…. skip down below for more fundamental examples and resources…
React Demo
- ex1 — A Basic React Component
- ex2 — A Basic React Class Component
- ex3 — A Class Component with State
- ex4 — A Class Component that Updates State
- ex5 — A Class Component that Iterates through State
- ex6 — An Example of Parent and Child Components
With regards to converting an existing HTML, CSS, and JS site into React, first you’ll want to think about how to break up your site into components,
- as well as think about what the general hierarchical component structure of your site will look like.
- From there, it’s a simple matter of copying the relevant HTML for that component and throwing it into the render method of your component file.
- Any methods that are needed for that component to function properly can added onto your new component.
Once you’ve refactored your HTML components into React components, you’ll want to lay them out in the desired hierarchical structure
- with children components being rendered by their parents, as well as ensuring that the parent components are passing down the necessary data as props to their children components.
ex.)

Enter your name:
<input type="text" id="name" />

Enter your HTML here

Is equivalent to:
A Basic Component
A component is some thing that is being rendered in the browser. It could be a button, a form with a bunch of fields in it…etc.…
React doesn’t place any restrictions on how large or small a component can be.
You could have an entire static site encapsulated in a single React component, but that would defeat the purpose of using React.
So the first thing to remember about a component is that a component must render something.
If nothing is being rendered from a component, then React will throw an error.
Inside of
BasicComponent.js
, first import React at the top of the file. Our most basic of
components looks like this:
This is a component that simply returns a div tag with the words Hello World! inside.
The last line simply exports our component so that it can be imported
by another file.
Notice that this component looks exactly like an anonymous arrow
function that we’ve named
BasicComponent
.
In fact, that is literally what this is.
The arrow function then is simply returning the div tag. When a component is written as a function like this one is, it is called a functional component.
A Basic Class Component
The above component is an example of a functional component, which is appropriate since that component is literally nothing more than a function that returns some HTML.
Functional components are great when all you want a component to do is to render some stuff.
Components can also be written as classes (although this paradigm is becoming outdated and you should strive to write your components functionally!
For this exercise, we’re going to write a class component that does exactly the same thing as the functional component we just wrote.
We’ll again need to import React at the top of the file, but we’ll also need to add a little something. Our import statement will look like this:
import React, { Component } from 'react';
So, in addition to importing React, we’re also importing the base Component class that is included in the React library.
React lets you define components as classes or functions.
Components defined as classes currently provide more features .
To define a React component class, you need to extend
React.Component
:
class Welcome extends React.Component {
render() {
return
Hello, {this.props.name}
;
}
}
The only method you
must define in a React.Component
subclass is called render()
.
render()
The
render()
method
is the only required method in a class component.
When called, it should examine
this.props
and
this.state
and
return one of the following types:
-
React elements.
Typically created via
JSX. For example,

and<MyComponent />
are React elements that instruct React to render a DOM node, or another user-defined component, respectively. - Arrays and fragments. Let you return multiple elements from render. See the documentation on fragments for more details.
- Portals. Let you render children into a different DOM subtree. See the documentation on portals for more details.
- String and numbers. These are rendered as text nodes in the DOM.
-
Booleans or
null
. Render nothing. (Mostly exists to supportreturn test && <Child />
pattern, wheretest
is boolean.)
The
render()
function should be pure, meaning that it does not modify
component state, it returns the same result each time it’s
invoked, and it does not directly interact with the browser.
If you need to interact with the browser, perform your work in
componentDidMount()
or the other lifecycle methods instead. Keeping
render()
pure
makes components easier to think about.
Note
render()
will not be invoked ifshouldComponentUpdate()
returns false.
The export statement at the bottom of the file also stays, completely unchanged. Our class component will thus look like this:
Notice that our BasicClassComponent
inherits from the base Component
class that we imported from the React library, by virtue of
the 'extends' keyword.
That being said, there's nothing in this minimal component that takes advantage of any of those inherited methods.
All we have is a method on our component class called render
that returns the same div tag.
If we really were deciding between whether to use a functional component versus a class component to render a simple div tag, then the functional style is more appropriate to use.
This is because class components are much better suited for handling component state and triggering events based on the component’s lifecycle.
The important takeaways at this point are that there are two types of components, functional and class components, and that functional components are well-suited if you’re just looking to render some HTML.
Class components, on the other hand, are much better suited for handling components that require more complex functionality, need to exhibit more varied behavior, and/or need to keep track of some state that may change throughout said component’s lifecycle.
A Class Component with Some State
Component state is any dynamic data that we want the component to keep track of.
For example, let’s say we have a form component. This form has some input fields that we’d like users to fill out. When a user types characters into an input field, how is that input persisted from the point of view of our form component?
The answer is by using component state!
There are a few important concepts regarding component state, such as how to update it, pass it to another component, render it, etc.
Only class components have the ability to persist state, so if at any time you realize that a component needs to keep track of some state, you know that you’ll automatically need a class component instead of a functional component.
It is possible to handle state with functional components but that requires the use of something called the useState() hook. Hooks were added in React 16.8; prior to this release, there was no mechanism to add state to functional components.
Here’s what the above component looks like as a functional component:
Our class component with state will look a lot like the basic class component we just wrote, but with some exceptions:
So far, the only new thing going on here is the constructor block. If you recall how classes in JavaScript work, classes need constructors.
Additionally, if a class is extending off of another class
and wants access to its parent class’s methods and properties,
then the super
function needs to be called inside the class's constructor
function.
Point being, the constructor function and the call to the
super
function
are not associated
with React, they are associated with all JavaScript classes.
-
Then there is the
this.state
property inside the constructor function that is set as an empty object. -
We're adding a property called
state
to our class and setting it to an empty object.
State objects in React are always just plain old objects.
So why is it that the basic class component we wrote in the previous exercise had no constructor function within its body?
That is because we had no need for them since all our class component was doing was rendering some HTML.
The constructor is needed here because that is where we need to initialize our state object.
The call to super
is needed because we can't reference this
inside of our constructor without a call to super
first.
Ok, now let’s actually use this state object.
One very common application of state objects in React components is to render the data being stored inside them within our component’s render function.
Refactoring our component class to do that:
We added a key-value pair to our state object inside our constructor.
- Then we changed the contents of the render function.
- Now, it’s actually rendering the data that we have inside the state object.
-
Notice that inside the div tags we’re using a template string
literal so that we can access the value of
this.state.someData
straight inside of our rendered content.
With Reacts newest version, we can actually now add state to a component without explicitly defining a constructor on the class. We can refactor our class component to look like this:
This new syntax is what is often referred to as ‘syntactic sugar’: under the hood, the React library translates this back into the old constructor code that we first started with, so that the JavaScript remains valid to the JavaScript interpreter.
The clue to this is the fact that when we want to access some
data from the state object, we still need to call it with
this.state.someData
; changing it to just
state.someData
does not work.
Class Component Updating State
Great, so we can render some state that our component persists for us.
However, we said an important use case of component state is to handle dynamic data.
A single static number isn’t very dynamic at all.
So now let’s walk through how to update component state.
Notice that we’ve added two methods to our class:
increment
and
decrement
.
increment
and
decrement
are
methods that we are
adding to our class component.
Unlike the
render
method,
increment
and
decrement
were
not already a part of our class component.
This is why
increment
and
decrement
are
written as arrow functions,
so that they are automatically bound to our class
component.
The alternative is using a declaration syntax function with the bind method to bind the context of our methods to the class component.
The more interesting thing is what is going on within the bodies of these methods.
Each calls the
setState
function.
-
setState
in fact is provided to us by React.
It is the standard way to update a component's state.
It's the only way you should ever update a component's state. It may seem more verbose than necessary, but there are good reasons for why you should be doing it this way.
So the way to use
setState
to
update a component's state is to pass it an object with each
of the state keys you wish to update, along with the
updated value.
In our
increment
method we said "I would like to update the
aNumber
property on my component state by adding one to it and then
setting the new value as my new
aNumber
".
The same thing happens in our
decrement
method, only we're subtracting instead of adding.
Then the other new concept we’re running into here is how to actually call these methods we’ve added to our class.
We added two HTML button tags within our
render
function, then in their respective
onClick
handlers, we specify the method that should be called whenever
this button gets clicked. So whenever we click either of the
buttons, our state gets updated appropriately and our component
will re-render to show the correct value we're expecting.
Class Component Iterating State
Another common state pattern you’ll see being used in React components is iterating over an array in our state object and rendering each array element in its own tag.
This is often used in order to render lists.
Additionally, we want to be able to easily update lists and have React re-render our updated list.
We’ll see how both of these are done and how they work together within a single component in order to create the behavior of a dynamic list.
The first change to note is that our state object now has an ‘ingredients’ array, and a ‘newIngredient’ field that has been initialized to an empty string.
The ingredients array contains the elements that we’ll want to render in our list.
The
addIngredient
and
handleIngredientInput
methods we've added to our class receives a parameter called
'event'.
This event object is part of the browser's API.
When we interact with some DOM element, such as clicking on an HTML button, the function that is invoked upon that button being clicked actually receives the event object.
- So when we type some input into an input tag, we're able grab each character that was typed into the input field through the event object parameter.
-
The
handleIngredientInput
method is what gets invoked every time the user presses a key to enter text in the input box for adding a new ingredient. -
Every character the user types gets persisted in the
newIngredient
field on the state object.
We're able to grab the text in the input box using
event.target.value
Which holds the value of the string text that is currently in the input box.
We use that to update our
newIngredient
string field.
Breaking down the
addIngredient
method, we see this
event.preventDefault()
invocation.
This is because this method will be used upon submitting a form, and it turns out that submitting a form triggers some default form behavior that we don't want to trigger when we submit the form (namely refreshing the entire page).
event.preventDefault()
will prevent this default form behavior, meaning our form will
only do what we want it to do when it is submitted.
Next, we store a reference to
this.state.ingredients
in a variable called
ingredientsList
.
So we now have a copy of the array that is stored in our state object.
We want to update the copy of the ingredients array first instead of directly updating the actual array itself in state.
Now we push whatever value is being stored at our
newIngredient
field onto the
ingredientsList
array so that our
ingredientsList
array is now more up-to-date than our
this.state.ingredients
array.
So all we have to do now is call
setState
appropriately in order to update the value in our state object.
Additionally, we also set the
newIngredient
field back to an empty string in order to clear out the input
field once we submit a new ingredient.
Now it's ready to accept more user input!
Looking at our render function, first note the
this.state.ingredients.map
call.
This is looping through each ingredient in our
ingredients
array and returning each one within its own div tag.
This is a very common pattern for rendering everything inside an array.
Then we have an HTML form which contains an input field.
The purpose of this form is to allow a user to add new
ingredients to the list. Note that we’re passing our
addIngredient
method to the form's
onSubmit
handler.
This means that our
addIngredient
method gets invoked whenever our form is submitted.
Lastly, the input field has an
onChange
handler that invokes our
handleIngredientInput
method whenever there is some sort of change in the input field,
namely when a user types into it.
Notice that the
value
field in
our input tag reads off of
this.state.newIngredient
in order to know what value to display.
So when a user enters text into the input field, the
onChange
handler is invoked every time, which updates our
this.state.newIngredient
field, which the input field and then renders.
Parent and Child Components
A single isolated component isn’t going to do us much good.
The beauty of React lies in the fact that it allows us to compose modular components together.
Let’s start off with the component we just saw, but let’s change
its name to
ParentComponent
.
The only two other differences in this component are that we’re
importing a
ChildComponent
and then using it inside our
this.state.ingredients.map
call.
ChildComponent
is another React component.
Notice that we're using it just as if it were any other HTML tag.
This is how we lay out our component hierarchy: the ChildComponent is rendered within the ParentComponent.
We can see this to be the case if we open up the developer console and inspect these elements.
Note also that we’re passing each ingredient as a ‘thing’ to the ChildComponent component.
This is how a parent component passes data to a child component. It doesn’t need to be called ‘thing’; you can call it whatever you want.

Let’s take a look now at the Child Component. It serves two purposes:
- to render the props data that it gets from a parent component,
- to add the ability for a user to click on it and have it toggle a strikethrough, indicating that the item is ‘complete’.
The overall structure of the child component is nothing we
haven’t seen. It’s just another class component with its own
state object and a method called handleClick
.
A component accesses its props via the this.props
object.
Any prop a parent component passes down to a child component
is accessible inside the child component's this.prop
object.
So our child component keeps its own state that tracks whether the component has been clicked or not.
Then at the top of the
render
function, it uses a ternary condition to determine whether the
div tag that is being rendered should have a strikethrough or
not.
The
handleClick
method is then invoked via an
onClick
handler
on the div tag; it does the work of toggling the
this.state.clicked
Boolean.
The overall structure of React applications can be represented as a hierarchical tree structure, just like how the DOM itself is structure. There is an overarching root component at the top of the hierarchy that every other component sits underneath. Specifying that a component should be a child of some parent component is as simple as throwing it in the parent component’s render function, just like how we did it in this example
Core Concepts:
1. What is react?
React is a declarative, efficient, and flexible JavaScript library for building user interfaces. It uses components to update and render as your data changes.
React manages the creation and continuous updating of DOM nodes in your Web page.
- It does not handle AJAX requests, Local Storage or style your website. IT is just a tool to dynamically render content on a webpage as a result of changes in ‘state’. Because it’s function is so limited in scope you may hear it referred to as a library… (not a framework … like Angular for example) and you may also hear it described as unopinionated.
2. Why use react?
- Works for teams and helps UI workflow patterns
- The components can be reusable
- Componentized UI is the future of web dev
Declarative programming
In the same way that you use HTML to
declare what the user
interface should
look like, React provides the same
mechanism in its
createElement
method or the higher-level language known as JSX.
Declarative programming is often defined as any style of programming that is not imperative.
A number of other common definitions attempt to define it by simply contrasting it with imperative programming. For example:
- A high-level program that describes what a computation should perform.
- Any programming language that lacks side effects
- A language with a clear correspondence to mathematical logic.[5]
These definitions overlap substantially.
Declarative programming is a non-imperative style of programming in which programs describe their desired results without explicitly listing commands or steps that must be performed.
Functional and logical programming languages are characterized by a declarative programming style.
In a pure functional language, such as Haskell, all functions are without side effects, and state changes are only represented as functions that transform the state, which is explicitly represented as a first-class object in the program.
— Wikipedia
What is a React pure component?
- Its return value is only determined by its input values
- Its return value is always the same for the same input values
A React component is considered pure if it renders the same
output for the same state and props. For class components like
this, React provides the
PureComponent
base class. Class components that extend the
React.PureComponent
class are treated as pure components.
Pure components have some performance improvements and render
optimizations since React implements the
shouldComponentUpdate()
method for them with a shallow comparison for props and state.
Are React functional components pure?
Functional components are very useful in React, especially when you want to isolate state management from the component. That’s why they are often called stateless components.
However, functional components cannot leverage the performance
improvements and render optimizations that come with
React.PureComponent
since they are not classes by definition.
If you want React to treat a functional component as a pure
component, you’ll have to convert the functional component to a
class component that extends
React.PureComponent
.
Reusability
React encourages you to think in terms of reusability as you
construct the user
interface from elements and components
that you create. When you
make a list or a button, you can
then reuse those components to show different data ‘state’ in
the same UI structure as you have built for different data
previously.
Component-Based
Build encapsulated components that manage their own state, then compose them to make complex UIs.
Since component logic is written in JavaScript instead of templates, you can easily pass rich data through your app and keep state out of the DOM.
Learn Once, Write Anywhere
We don’t make assumptions about the rest of your technology stack, so you can develop new features in React without rewriting existing code.
React can also render on the server using Node and power mobile apps using React Native.
Speed
Due to the use of a virtual DOM, React handles changes to a Web
page more
intelligently than just string manipulation. It
is constantly monitors the
virtual DOM for changes. It very
efficiently reconciles changes in the virtual
DOM with what
it has already produced in the real DOM. This is what
makes
React one of the speediest front-end libraries available.
3. Who uses react?
- Companies such as Facebook app for android and Instagram
- Here is a link to a list of other companies who use react.
4. Setting up react
- React can be set up in CodePen for quick practice development by adding react.js, react-dom and babel.
- It can also be set up by downloading a react starter project from GitHub installing node and following these instructions.
- Alternatively it can be set up through NPM like this.
5. Intro to eco system
- Composition, being able to wrap up sections of code into there own containers so they can be re used.
- How to make a large application? by combining small components to create a larger complex application.
6. Imperative vs Declarative (React is Declarative)
- Imperative, ‘telling to computer HOW to do something’ e.g looping over an array of numbers using a for loop.
- Declarative, is concerned about WHAT we want to happen. e.g using a reduce method on an array.
- Benefits of using declarative code:
- Reduce side effects
- Minimize mutability
- Less Bugs
7. Unidirectional Data Flow
- As the state collects from user interaction, the UI gets updated.
- Explicit Mutations
- Whenever the state needs to be updated in our application setState has to be called.
this.setState({
highlight: !this.state.highlight,
})
7.1. First component
- Components are the building blocks of React.
- They are similar to a collection of HTML,CSS, JS and data specific to that component.
- They can be defined in pure JavaScript or JSX.
- Data is either received from a component’s parent component, or it’s contained in the component itself.
- Applications can be separated into smaller components like this…
- React components can be created using ES6 class like this.
import React from 'react';
class Hello extends React.Component {
render () {
return
Hello, {this.props.name}!
;
}
}
export default Hello;
- At the top with have the code to bring react and react dom libraries in.
- React library is used for the react syntax.
- React DOM is used to update the DOM.
- We then have the Class section which creates the component.
- Render() describes the specific UI for the component.
- Return is used to return the JSX
- And Finally ReactDOM.render is used to update the DOM.
8. Data flow with props
Small examples of data flow, see if you can get the code to work.
9. Creating lists with map
The parent component passes down to the child component as props.
Using props to access names and map to loop through each list item. Then passing this by using props.
Checking data to see if Boolean is true then adding detail to the list.
10. Prop types
PropTypes allow you to declare the type (string, number, function, etc) of each prop being passed to a component. Then if a prop passed in isn’t of the declared type you’ll get a warning in the console.
Excerpt from the React website:
React — A JavaScript library for building user interfaces
A JavaScript library for building user interfaces
Declarative
React makes it painless to create interactive UIs. Design simple views for each state in your application, and React will efficiently update and render just the right components when your data changes.
Declarative views make your code more predictable and easier to debug.
A Simple Component
React components implement a
render()
method
that takes input data and returns what to display. This example
uses an XML-like syntax called JSX. Input data that is passed
into the component can be accessed by
render()
via
this.props
.
JSX is optional and not required to use React. Try the Babel REPL to see the raw JavaScript code produced by the JSX compilation step.
In addition to taking input data (accessed via
this.props
), a
component can maintain internal state data (accessed via
this.state
).
When a component’s state data changes, the rendered markup will
be updated by re-invoking
render()
.
An Application
Using props
and
state
, we can
put together a small Todo application. This example uses
state
to track
the current list of items as well as the text that the user has
entered. Although event handlers appear to be rendered inline,
they will be collected and implemented using event delegation.
A Component Using External Plugins
React allows you to interface with other libraries and
frameworks. This example uses remarkable, an external Markdown
library, to convert the
<textarea>
’s value in real time.
React Cheat Sheet:
React-Tutorial-1:
React Boilerplate:
Created by @eankeen | The ultimate trifecta - React, Babel, and Webpack - complete with hot module reloading and a…replit.com
For more resources visit:


Acuity will post to /webhook
when a new appointment is scheduled
or an existing appointment is rescheduled or canceled.
Acuity won't be able to access <IP_ADDRESS>:8000
so you'll either
have to take our word for it, or try this on your server! Set your callback
location under the
Webhook integration.
All arguments are sent as application/x-www-form-urlencoded
content.
scheduled
rescheduled
or canceled
depending on the action that initiated the webhook call


Defined in generated file: python/ops/gen_image_ops.py
PNG-encode an image.
tf.compat.v1.image.encode_png
tf.compat.v2.image.encode_png
tf.image.encode_png( image, compression=-1, name=None )
image
is a 3-D uint8 or uint16 Tensor of shape [height, width, channels]
where channels
is:
The ZLIB compression level, compression
, can be -1 for the PNG-encoder
default or a value from 0 to 9. 9 is the highest compression level, generating
the smallest output, but is slower.
image
: A Tensor
. Must be one of the following types: uint8
, uint16
.
3-D with shape [height, width, channels]
.compression
: An optional int
. Defaults to -1
. Compression level.name
: A name for the operation (optional).A Tensor
of type string
.


A GREAT WALL (1986) English and Chinese, with English subtitles.
Rating: 3 stars (out of 4.0) ******************************** Key to rating system: 2.0 stars - Debatable 2.5 stars - Some people may like it 3.0 stars - I liked it 3.5 stars - I am biased in favor of the movie 4.0 stars - I felt the movie's impact personally or it stood out ********************************* A Movie Review by David Sunga
Directed by: Peter Wang
Written by: Peter Wang and Shirley Sun
Starring: Peter Wang, Sharon Iwai, Kelvin Han Yee, Li Qinqin, Hy Xiaoguang, Shen Guanglan
Ingredients: American family visiting Beijing relatives
Synopsis: In this cultural exploration, a Chinese American computer engineer named Fang (Peter Wang) decides to take a month-long vacation to visit his sister Mrs. Chao (Shen Guanglan), her husband Mr. Chao (Hy Xiaoguang), and their teenage daughter Lili (Li Qinqin) in Beijing after 30 years of separation. Fang brings his Asian American wife Grace (Sharon Iwai) and his college-aged son Paul (Kelvin Han Yee) along, both of whom don't speak Chinese. The encounter between the two families allows the audience to compare the Eastern and Western cultures as well as the ambitions of individual characters.
Opinion: Sometimes a film is plot driven. Sometimes it's a character sketch. A GREAT WALL (1986) can be called a culture sketch, as opposed to a character sketch because it gently compares a Chinese American family to a Beijing family.
Fang's family is thoroughly Americanized. Fang is an upper middle class professional who enjoys jogging and argues with his boss. His wife can't cook Chinese. His son has a white girlfriend and complains of racism when Fang encourages him to befriend an Asian girl. Meanwhile Fang's Beijing sister advocates absolute loyalty to the 'work unit.' Her husband is a retired official who has heard rumors of American depravity (homosexuals running the streets), and her daughter Lili longs for American freedoms in a youth culture where studying for college entrance exams is the most important thing in life. The two families spend a month slowly learning about each other.
There is no ultimate 'answer' or final comprehensive understanding after the month-long vacation. The film is neither here nor there; it's a neutral, meandering, gentle, portrait of life on both sides.
Copyright © 1998 by David Sunga This review and others like it can be found at THE CRITIC ZOO: http://www.criticzoo.com email<EMAIL_ADDRESS>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


The CSS positioning properties[top, bottom, left, and right] allow you to position an element. However, these properties will not work unless the position property is set first. They also work differently depending on the positioning method. There are 4 positioning methods.
- Static (Default) - positioned according to the normal flow of the page.They are not affected by the
top, bottom, left, and right properties
- Fixed (Based on window) - will not
move even if the window is scrolled. Display properties will be computed as block
- Relative (Based on its own Position)
- Absolute (Based on any of its ancestoral parent, whose position is not static) - If no such element is found, the containing block is HTML. Display properties will be computed as block
Span: I am Static - positioned according to the normal flow of the page. My default display - inline


Shop's name: {{ setting.ShopName }}
Shop's Address: {{ setting.ShopAddress }}
Shop's Phone Number: {{ setting.ShopPhone }}
Shop's Email: {{ setting.ShopEmail }}
Shop's Facebook Page: {{ setting.ShopFacebookPage }}
Vat Amount: {{ setting.VatRate }}%
Vat Registration Number: {{ setting.VatRegNumber }}
Vat Type: {{ setting.VatType }}
Service Charge: {{ setting.ServiceChargeRate }}%
Additional Information: {{ setting.AdditionalInformation }}


--- layout: layouts/class_page.njk date: 2009-09-08 pagetitle: AP Therapies - Sports Massage page_desc: Massage for fast recovery from injury, improved flexibility and relief of muscular pain. For amateur and professional sports people and all with muscular and related problems pagephoto: pic02.jpg permalink: /sports_massage.html ---
| ◊ | Maintain muscle condition — A combination of massage and stretching techniques will help prevent muscles from shortening. This will improve and help maintain flexibility, enable full range of movement and prevent injury |
| ◊ | Identify and treat injuries early — An experienced massage therapist may identify small injuries of which the client might not be aware and can provide treatment to prevent more significant injury developing |
| ◊ | Aid faster recovery from muscle injuries — Massage will improve blood circulation, thus removing waste products from the muscles and increasing the supply of oxygen and other nutrients necessary for the healing process |
| ◊ | Remove and help prevent the formation of scar tissue — promoting healing and preventing further injury from over-use |
| ◊ | Promote relaxation — with both physical and psychological benefits |
| ◊ | Pre-event and post-event treatment — are aimed at preventing injury and speeding up recovery |


Name: Declension
Status: Experimental
General: Some text explaining what the directive as a whole is doing


Next:
FORMAT Printer Operations
, Previous:
FORMAT Radix Control
, Up:
Formatted Output
22.3.3 FORMAT Floating-Point Printers
•
Tilde F-> Fixed-Format Floating-Point
:
•
Tilde E-> Exponential Floating-Point
:
•
Tilde G-> General Floating-Point
:
•
Tilde Dollarsign-> Monetary Floating-Point
:


find
filter
this is first paragraph
this is second paragraph
this is h2 tag and it is used by filter tag
this third paragraph


For this challenge, I wanted to experiment with color blending and discover all the different ways to blend color using p5.js. I played around with lerpColor() and hue to create different effects across my sketches. This sketch was hard... definitely a huge challenge in getting the color blending just right at different points depending on the sun's location. I created 5 different sky gradients for different times of day, and had each correspond to a mouseY position of the sun with a power function to determine the transition points. I used lerpColor() to create the individual gradients, and then I lerped the colors between the two gradients the sun was "in-between" depending on how close the sun was to either gradient. The whole thing used lerpColor() 3 times. Hopefully you agree that it creates a beautiful interactive color experience.


Man wants to reunite a best man with the wedding speech he left in a book
Due to give a speech and in need of inspiration?
You might want to go flicking through some old books.
Reece Wane, 27, was lucky enough to find a best man’s speech – albeit one that’s a tad cringey – stuffed in the pages of a secondhand book
Reece had ordered a book about the Teutonic Knights for £6.50 from Amazon Marketplace.
As he was flicking through the pages, two pieces of A4 paper fell out. It turned out those pieces of paper contained a best man’s speech packed with jokes and puns.
Is it a speech we’d recommend copying? Perhaps not.
But it could jog your creative juices if you’re staring at a blank page. Next time you’ve got writer’s block, go to a secondhand bookshop and leaf through the pages.
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The speech was written for the wedding of a Tom Fletcher and his wife-to-be Becky (so no, not the guy from McFly).
Now, Reece hopes to track down the mystery best man and reunite him with his speech.
The speech starts with a joke: ‘If anyone here feels nervous, apprehensive or queasy… It’s probably because you’ve just got married to Tom Fletcher’.
Then it compares Tom’s dancing to that of David Brent, jokes about the groom’s work ethic, and says that Becky ‘couldn’t have done any worse’.
There’s also the classic line of referring to the speech as the ‘worst five minutes of your life’, then saying ‘Becky – your worst five minutes will probably come later tonight’.
Hotel manager Reece, from Leeds, said: ‘I thought it was absolutely hilarious.
‘It’s so generic and he’s used so many classic British humour jokes.
‘There is some real personal stuff in there and you can see he’s properly trying to wind his best mate up.
‘When I found it me and Molly had such a laugh about it.
‘I was really surprised because I was just sat there with a brew and it popped out.
‘I wonder if he popped it in there for safekeeping and just forgot where he put it.
‘If the wedding hasn’t happened yet then I do want to get it back to him before the big day. There’s a lot of work gone into it.’
The speech suggests the wedding of Tom and Becky Fletcher will take place on 5 June – but doesn’t say in what year.
Advertisement Advertisement
Reece said: ‘We have tried to track down the author but haven’t had any luck.
‘From one bloke to another I’d like to get it back to him.
‘It takes a lot of hard work to write a best man’s speech. He probably spent says writing it and now he has lost it.
‘If I’d lost one I’d be gutted, the wedding might not have even happened yet.
‘It hasn’t been there for long because the paper is really fresh.
‘I’ve got his back if he wants to have it returned for sure.’


Design Team 0 Slides
Eric Bridgeford, Albert Lee, Eric Walker
FNGS pipeline leg overview
Eric Bridgeford
Week's Accomplishments
- Implemented Linear and Quadratic Drift removal (using CPAC methods)
- Finished a pipeline and analyzed for FNIRT brains (compared ts to kf-ts)
- Decided AGAINST smoothing
Results for Pipeline
- Note: first version of pipeline implementing FNIRT
HNU1, no kalman filter
HNU1, kalman filter
NKI, no kalman filter
NKI, kalman filter
DC1, no kalman filter
DC1, kalman filter
BNU1, no kalman filter
BNU1, kalman filter
What this Means
- With some randomly chosen DLM, Kalman filtering helps
- Pessimistic: might not actually work, since this DLM is completely arbitrary
- Need to find how to optimize the DLM, so that when we filter we are doing it right
Quality Control for fMRI graphs
- Goal: create a repo for fMRI graphs that demonstrates between-dataset variances
- Similar to neurodata/dataset-variance, but those metrics don't really apply
- Decide which metrics to include
- Want to be able to run all of our discriminability analyses, and adds another layer of benchmarking for each pipeline as we improve
Things to do this week
- Merge ndmg-master into ndmg-eric-dev
- Run conversions to binary files from HCP dataset
- Figure out top n-component extraction for our pipeline
- Make R style guide and distribute ASAP
Kalman Filter EM Algorithm
Eric Walker
Javascript Image Analysis
Albert Lee
Sample Webpage for partial brain
Sample Webpage for complete brain


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GoIndex Auto Code Builder中文
This is a Modified (Dark Mode) version of website to help you get started with GoIndex ( Dark Mode ).The Modified (Dark Mode) source code of this website can be found here, so no need to worry about whether it is trustworthy.
The original work for this website can be found here, and the original Github Repo can be found here
1. Get Authorization Code
Click the following link and authorize, then copy the code you get.
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