bgrins

<script type='text/javascript' src='astar.js'></script>
<script type='text/javascript'>
var graph = new Graph([
	[1,1,1,1],
	[0,1,1,0],
	[0,0,1,1]
]);
var start = graph.grid[0][0];
var end = graph.grid[1][2];
var result = astar.search(graph, start, end);

dtao

function eachAsync(collection, iterator, callback) {
  var iterate = function(i) {
    setTimeout(function() {
      iterator(collection[i]);
      if (i < collection.length) {
        iterate(i + 1);
      } else {
        callback();
      }
    }, 0);

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

paulirish

A timeline of the last four years of detecting good old window.localStorage.

---

Jan Lenhart, bless his heart contributed the first patch for support:

October 2009: 5059daa

igrigorik

<p>Hello

<script>
var xhr = new XMLHttpRequest();
xhr.open('GET', '/stream');
xhr.seenBytes = 0;

xhr.onreadystatechange = function() {
  console.log("state change.. state: "+ xhr.readyState);

tmoertel

# Transforming the vanilla recursive fib into the iterative DP version
# through a series of mechanical steps.
#
# For more on converting recursive algorithms into iterative ones, see:
# http://blog.moertel.com/posts/2013-05-11-recursive-to-iterative.html


# original function

def fib(n):

mudge

/* Polyfill indexOf. */
var indexOf;

if (typeof Array.prototype.indexOf === 'function') {
    indexOf = function (haystack, needle) {
        return haystack.indexOf(needle);
    };
} else {
    indexOf = function (haystack, needle) {
        var i = 0, length = haystack.length, idx = -1, found = false;

plentz

# to generate your dhparam.pem file, run in the terminal
openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048

fsodogandji

#To create a classic TCP listening daemon, similar to netcat -l, use a variation of the following command.
socat TCP-LISTEN:8080 stdout

#use remotly a command shell
socat TCP4-LISTEN:1234,reuseaddr,fork 'SYSTEM:/bin/cat /home/infos.txt'

#sslify a server
socat OPENSSL-LISTEN:443,reuse‐addr,pf=ip4,fork,cert=server.pem,cafile=client.crt TCP4-CONNECT:localhost:80

domenic

// This event emitter emits events, but reserves the right to publish events to
// for its creator. It uses a WeakMap for true encapsulation.

const eesToEventMaps = new WeakMap();

export default class EventEmitter {
    constructor(publisher) {
        const eventMap = Object.create(null);
        eesToEventMaps.set(this, eventMap);