joyrexus

nest.js

A multi-level groupBy for arrays inspired by D3's nest operator.

Nesting allows elements in an array to be grouped into a hierarchical tree structure; think of it like the GROUP BY operator in SQL, except you can have multiple levels of grouping, and the resulting output is a tree rather than a flat table. The levels in the tree are specified by key functions.

See this fiddle for live demo.

domenic

Node.js core does its best to treat every platform equally. Even if most Node developers use OS X day to day, some use Windows, and most everyone deploys to Linux or Solaris. So it's important to keep your code portable between platforms, whether you're writing a library or an application.

Predictably, most cross-platform issues come from Windows. Things just work differently there! But if you're careful, and follow some simple best practices, your code can run just as well on Windows systems.

Paths and URLs

On Windows, paths are constructed with backslashes instead of forward slashes. So if you do your directory manipulation

bendrucker

'use strict';

var Promise   = require('bluebird');
var knex      = require('../../src/db').knex;

var tables = [
  'organizations',
  'campaigns',
  'donors',
  'pledges',

sumardi

# New repository
mkdir <repo> && cd <repo>
git init
git remote add –f <name> <url>
git config core.sparsecheckout true
echo some/dir/ >> .git/info/sparse-checkout
echo another/sub/tree >> .git/info/sparse-checkout
git pull <remote> <branch>

# Existing repository

eirikb

const req = require.context('./components/', true, /\.(js|vue)$/i);
req.keys().map(key => {
  const name = key.match(/\w+/)[0];
  return Vue.component(name, req(key))
});

MartinMuzatko

{}

MartinMuzatko

navigator.mediaDevices.getUserMedia({audio:0,video:1})
.then(function(mediaStream) {
    document.body.innerHTML='<video>'
    var video = document.querySelector('video')
    video.srcObject = mediaStream
    video.onloadedmetadata = function(e) {
        video.play()
    }
})

aradnom

// Create new observable for watching route changes
var Router = riot.observable();

// Process routes on both route change and initial load
riot.route( processRoute );
riot.route.exec( processRoute );

// Expose the Router object
riot.mixin( 'Router', Router );