jbellenger

// All webpack chunks have an identifier that is written to both the chunk and
// the chunk manifest.
//
// By default, webpack uses "int" identifiers, where the identifiers are
// sequentially generated after chunks are ordered by OccurenceOrderPlugin.
//
// The result of this is that small code changes may cause chunks to be
// reordered, leading to a cascading change of chunk ids, and a large number of
// chunk rehashes that could have been avoided.
//

deebloo

// https://github.com/deebloo/rxjs-worker
var observable = Observable.of([0, 1, 2, 3, 4]);

observable
  .map(function (data) {
    return data.concat([5, 6, 7, 8, 9]);
  })
  .workerMap(function (data) {
    return data.concat([10,11,12,13,14]);;
  })

deanrad

Distilling the Essence of Reducers

Redux has brought the notion of reducer back into the awareness of many developers for whom they are a novel concept. In fact they are quite simple, and used all the time in such things as SUM aggregations in databases, where they compute a single value from many.

It's great that Redux has made reducers known to a broader audience, though they are relatively ancient concepts in programming, in fact. But the particular way Redux illustrates a reducer in its documentaion is, in my opinion, with a coding style that is harder to extend and read than it should be. Let's distill reducers down to their essensce, and build up Redux reducers in a way that lowers complexity, and helps separate Redux idioms from your business logic.

The simplest reducer

A reducer is a pure function that accepts more arguments than it returns. That is to say - one whose "arity" is greater than 1. It 'reduces' the two things you pass it down to a single value. Here are two reducers, in a map

btroncone

RxJS 5 Operators By Example

⚠️ UPDATE: I have moved the contents of this gist plus more to http://www.learnrxjs.io and https://github.com/btroncone/learn-rxjs. For expanded examples, explanations, and resources, please check out this new location!

A complete list of RxJS 5 operators with easy to understand explanations and runnable examples.

Table of Contents

• buffer
• bufferCount
• bufferTime

Avaq

const I  = x => x
const K  = x => y => x
const A  = f => x => f (x)
const T  = x => f => f (x)
const W  = f => x => f (x) (x)
const C  = f => y => x => f (x) (y)
const B  = f => g => x => f (g (x))
const S  = f => g => x => f (x) (g (x))
const S_ = f => g => x => f (g (x)) (x)
const S2 = f => g => h => x => f (g (x)) (h (x))

paulirish

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

toolmantim

# A simple Makefile alternative to using Grunt for your static asset compilation
#
## Usage
#
#   $ npm install
#
# And then you can run various commands:
#
#   $ make            # compile files that need compiling
#   $ make clean all  # remove target files and recompile from scratch

nzakas

/*
 * This is just an experiment. Don't read too much into the fact that these are global variables.
 * The basic idea is to combine the two steps of defining a constructor and modifying a prototype
 * into just one function call that looks more like traditional classes and other OO languages.
 */

// Utility function
function mixin(receiver, supplier) {

    if (Object.getOwnPropertyDescriptor) {

milligramme

$ brew install bash-completion
==> Downloading http://bash-completion.alioth.debian.org/files/bash-completion-1.3.tar.bz2
######################################################################## 100.0%
==> ./configure --prefix=/usr/local/Cellar/bash-completion/1.3
==> make install
==> Caveats
Add the following lines to your ~/.bash_profile file:
  if [ -f `brew --prefix`/etc/bash_completion ]; then
    . `brew --prefix`/etc/bash_completion
  fi

rauchg

New URL

https://github.com/guille/ms.js