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.

---

morten-olsen

function foo() {
    return {
        hello: 'world'
    };
}

function bar() 
{
    return 
    {

bendc

var elements = document.querySelectorAll("div"),
    callback = (el) => { console.log(el); };

// Spread operator
[...elements].forEach(callback);

// Array.from()
Array.from(elements).forEach(callback);

// for...of statement

remojansen

function logClass(target: any) {
 
  // save a reference to the original constructor
  var original = target;
 
  // a utility function to generate instances of a class
  function construct(constructor, args) {
    var c : any = function () {
      return constructor.apply(this, args);
    }

thisismitch

global
	log /dev/log	local0
	log /dev/log	local1 notice
	chroot /var/lib/haproxy
	stats socket /run/haproxy/admin.sock mode 660 level admin
	stats timeout 30s
	user haproxy
	group haproxy
	daemon
	maxconn 2048

oanhnn

Problem

I have two Github accounts: oanhnn (personal) and superman (for work). I want to use both accounts on same computer (without typing password everytime, when doing git push or pull).

Solution

Use ssh keys and define host aliases in ssh config file (each alias for an account).

How to?

1. Generate ssh key pairs for accounts and add them to GitHub accounts.

rgl

bash -c 'while [[ "$(curl -s -o /dev/null -w ''%{http_code}'' localhost:9000)" != "200" ]]; do sleep 5; done'

# also check https://gist.github.com/rgl/c2ba64b7e2a5a04d1eb65983995dce76

fgandellini

import xs from 'xstream'
import XStreamAdapter from '@cycle/xstream-adapter'

export function makePouchDBDriver(PouchDB, dbName, dbOptions) {
  PouchDB.plugin(require('relational-pouch'))

  const db = new PouchDB(dbName, dbOptions)  
  const api = ['put', 'get', 'allDocs' , 'destroy', 'setSchema', 'rel.save', 'rel.find', 'rel.del']

  return (sinks, streamAdapter) =>

joshuafcole

Custom Functions and modules in Eve

Note: We plan to do a thorough documentation pass in the coming weeks to clean up and document the codebase. This document is a very rough draft intended to help intrepid adventurers navigate the jungle until then.

Terms Sheet

• Cardinality - The number of results a thing would return.
• Intermediate - A value which is necessary to derive the final result, but not part of the result.
• Referential Transparency - The property of always returning exactly the same output given an input.

bvaughn

React lifecycle cheatsheet

Method	Side effects1	State updates2	Example uses
Mounting
componentWillMount		✓	Constructor equivalent for createClass
render			Create and return element(s)
componentDidMount	✓	✓	DOM manipulations, network requests, etc.
Updating
componentWillReceiveProps		✓	Update state based on changed props