| let fs = require('fs'); | |
| let string_decoder = require('string_decoder'); | |
| // Synchronously read the content of a text file one line at a time | |
| // Note, caller must complete the iteration for file to be closed | |
| // ie: don't break out early from the loop calling this function | |
| function* getFileLinesSync(filename, encoding) | |
| { | |
| let fd = fs.openSync(filename); | |
| let buf = Buffer.allocUnsafe(32768); |
Note:
When this guide is more complete, the plan is to move it into Prepack documentation.
For now I put it out as a gist to gather initial feedback.
If you're building JavaScript apps, you might already be familiar with some tools that compile JavaScript code to equivalent JavaScript code:
| # | |
| # This script installs and configures WSL to work with Docker Toolbox for Windows. | |
| # 1. Install WSL (check out [bowinstaller](https://github.com/xezpeleta/bowinstaller) for programmatic installation. | |
| # 2. Run the contents of this script in Bash. (copy and paste works fine, no need to save) | |
| # | |
| sudo -sEH << 'EOM' | |
| # Install the docker client and docker-compose | |
| apt-get update && apt-get install -y curl ca-certificates | |
| curl -sSL https://get.docker.com/ | sh | |
| curl -L "https://github.com/docker/compose/releases/download/1.11.1/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose |
| // getComponent is a function that returns a promise for a component | |
| // It will not be called until the first mount | |
| function asyncComponent(getComponent) { | |
| return class AsyncComponent extends React.Component { | |
| static Component = null; | |
| state = { Component: AsyncComponent.Component }; | |
| componentWillMount() { | |
| if (!this.state.Component) { | |
| getComponent().then(Component => { |
Currently it for clent-side apps only. Not for universall (isomorphic) apps. Will add it soon
I'm using the promise middleware to dispatch actions like this:
@kangax created a new interesting quiz, this time devoted to ES6 (aka ES2015). I found this quiz very interesting and quite hard (made myself 3 mistakes on first pass).
Here we go with the explanations:
(function(x, f = () => x) {
| require("babel/register"); | |
| const dependencies = require('./src/dependencies'); | |
| var WebpackIsomorphicTools = require('webpack-isomorphic-tools'); | |
| var chokidar = require('chokidar'); | |
| var webpack = require('webpack'); | |
| var config = require('./config/webpack.config.dev'); | |
| var compiler = webpack(config); | |
| var app = dependencies.expressApp; | |
| var Mocha = require('mocha'); |
First of all, this is not my brilliant effort to get react-native working on Windows, it is the collation of work by others, particularly @mqli and @Bernd Wessels. I've just summarised what worked for me.
If you would prefer to read what I've plagerised, head over to mqli's great gist
react-native-cli 0.1.5, react-native 0.12.0 on Windows 10, node 4.1.1, and Android (physical Nexus 6 and AVD with API v22)Keep this github issue handy, it’s the bucket for all Windows/Linux related tricks to get RN working.
| function mapValues(obj, fn) { | |
| return Object.keys(obj).reduce((result, key) => { | |
| result[key] = fn(obj[key], key); | |
| return result; | |
| }, {}); | |
| } | |
| function pick(obj, fn) { | |
| return Object.keys(obj).reduce((result, key) => { | |
| if (fn(obj[key])) { |