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Attention: the list was moved to
https://github.com/dypsilon/frontend-dev-bookmarks
This page is not maintained anymore, please update your bookmarks.
/*eslint-env es6 */ | |
// Inspired by the paper "A tutorial on the universality and | |
// expressiveness of fold" by Graham Hutton (available at | |
// http://www.cs.nott.ac.uk/~gmh/fold.pdf), implementing some generic | |
// list handling functions in JavaScript in terms of `fold`. | |
// Personally I had an enlightnening moment when I realised the | |
// beautiful interplay of cons lists and foldr during the FP101x | |
// Haskell course. JavaScript's syntax doesn't make this very apparent |
(function () { | |
var makeCallback = function(eventType, observer) { | |
if (eventType === 'value') { | |
return function(snap) { | |
observer.onNext(snap); | |
}; | |
} else { | |
return function(snap, prevName) { | |
// Wrap into an object, since we can only pass one argument through. | |
observer.onNext({snapshot: snap, prevName: prevName}); |
Locate the section for your github remote in the .git/config
file. It looks like this:
[remote "origin"]
fetch = +refs/heads/*:refs/remotes/origin/*
url = git@github.com:joyent/node.git
Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/*
to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:
// === Arrays | |
var [a, b] = [1, 2]; | |
console.log(a, b); | |
//=> 1 2 | |
// Use from functions, only select from pattern | |
var foo = () => [1, 2, 3]; |
Mute these words in your settings here: https://twitter.com/settings/muted_keywords | |
ActivityTweet | |
generic_activity_highlights | |
generic_activity_momentsbreaking | |
RankedOrganicTweet | |
suggest_activity | |
suggest_activity_feed | |
suggest_activity_highlights | |
suggest_activity_tweet |
This is the follow up to a post I wrote recently called From Require.js to Webpack - Party 1 (the why) which was published in my personal blog.
In that post I talked about 3 main reasons for moving from require.js to webpack:
Here I'll instead talk about some of the technical challenges that we faced during the migration. Despite the clear benefits in developer experience (DX) the setup was fairly difficult and I'd like to cover some of the challanges we faced to make the transition a bit easier.
When using directives, you often need to pass parameters to the directive. This can be done in several ways. The first 3 can be used whether scope is true or false. This is still a WIP, so validate for yourself.
Raw Attribute Strings
<div my-directive="some string" another-param="another string"></div>
const {useCallback, useEffect, useReducer, useRef} = require('react'); | |
let effectCapture = null; | |
exports.useReducerWithEmitEffect = function(reducer, initialArg, init) { | |
let updateCounter = useRef(0); | |
let wrappedReducer = useCallback(function(oldWrappedState, action) { | |
effectCapture = []; | |
try { | |
let newState = reducer(oldWrappedState.state, action.action); |
// array utils | |
// ================================================================================================= | |
const combine = (...arrays) => [].concat(...arrays); | |
const compact = arr => arr.filter(Boolean); | |
const contains = (() => Array.prototype.includes | |
? (arr, value) => arr.includes(value) | |
: (arr, value) => arr.some(el => el === value) |