davideast

export class SyncPath {
  constructor(rootRef, path) {
    this._rootRef = rootRef;
    this.user = this._rootRef.getAuth();
    this._userDataRef = this._rootRef.child(path).child(this.user.uid);
    this.data = {};
    this._userDataRef.on('value', (snap) => this.data = snap.val() || {});
  }
  keys() {
    return Object.keys(this.data);

joseluisq

Add Git Branch Name to Terminal Prompt (Linux/Mac)

Open ~/.bash_profile in your favorite editor and add the following content to the bottom.

# Git branch in prompt.

parse_git_branch() {

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

addyosmani

Deprecated. See https://www.polymer-project.org/articles/unit-testing-elements.html for the latest version.

Unit Testing Polymer Elements

Note: this guide is a work-in-progress and will be added to the Polymer docs when it's ready. We have updated <seed-element> to include unit tests and this guide has been moved to Google docs. Expect a version on the Polymer site before the end of September.

After spending days working on your <super-awesome> Polymer element, you’re finally ready to share it with the rest of the world. You add the code for using it to your demo, iterate on it over time and come back to it one day when..uh oh. The demo broke because something has gone horribly wrong. Suddenly, <super-awesome> isn’t starting to look so great. Now you’re stuck trying to backtrack through your commit log to figure out how you broke the code. You’re not going to have a fun time.

If you’ve been working on the front-end for a while, even if you haven’t really played with Polymer elements before, this s

mikaelbr

// === Arrays

var [a, b] = [1, 2];
console.log(a, b);
//=> 1 2


// Use from functions, only select from pattern
var foo = () => [1, 2, 3];

mathewbyrne

function slugify(text)
{
  return text.toString().toLowerCase()
    .replace(/\s+/g, '-')           // Replace spaces with -
    .replace(/[^\w\-]+/g, '')       // Remove all non-word chars
    .replace(/\-\-+/g, '-')         // Replace multiple - with single -
    .replace(/^-+/, '')             // Trim - from start of text
    .replace(/-+$/, '');            // Trim - from end of text
}

ryuone

/* node getImages.js http://www.yahoo.co.jp */ 

var htmlparser = require('htmlparser');
var sys  = require('sys');
var http = require('http');
var fs   = require('fs');
var url  = require('url');
var path = require('path');

if(process.argv.length !== 3){