JosephPecoraro

# Ways to execute a shell script in Ruby
# Example Script - Joseph Pecoraro

cmd = "echo 'hi'" # Sample string that can be used

# 1. Kernel#` - commonly called backticks - `cmd` 
# This is like many other languages, including bash, PHP, and Perl
#   Synchronous (blocking)
#   Returns the output of the shell command
#   Docs: http://ruby-doc.org/core/classes/Kernel.html#M001111

daddz

class FileQueue
	
  def initialize(file_name)
    @file_name = file_name
  end

  def push(obj)
    safe_open('a') do |file|
      file.write(obj + "\n")
    end

evangoer

# YUI 3 Cookbook Table of Contents

## YUI BASICS

### Put YUI on the Page

* Load YUI  
* Load debug builds  
* Load locally hosted builds 
* Load a YUI 2 widget 

juliocesar

// I mean, seriously, localStorage is supported even by your mum. How about instead of
// casing the feature out, you give users in-memory (stale) storage instead?
// If they close your application, they deserve to lose data anyway.

// if (!('localStorage' in window)) {
if (!Modernizr.localstorage) {
  window.localStorage = {
    _data       : {},
    setItem     : function(id, val) { return this._data[id] = String(val); },
    getItem     : function(id) { return this._data.hasOwnProperty(id) ? this._data[id] : undefined; },

proofek

#!/usr/bin/php
<?php

echo "\nRunning php linter...\n";

$params = explode(' ', file_get_contents('php://stdin'));
$ref = trim($params[1]);

$diff = array();
$return = 0;

jimbojsb

Step 0:

Get Homebrew installed on your mac if you don't already have it

Step 1:

Install highlight. "brew install highlight". (This brings down Lua and Boost as well)

Step 2:

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

justinbmeyer

I'm considering adding an alternative to CanJS's EJS live-binding system. I really like EJS, it's extremely powerful, but ugly to look at. So, I'm trying to create a better mouse-trap.

Currently, the most popular mouse-trap seems to be Handlebars. What do you like about it?

• Syntax, or
• Prepared data

Syntax

Handlebars uses {{}} for insertion and {{#}} and {{/}} for widgets and control structures.

briancavalier

//-------------------------------------------------------------
//
// Hypothesis:
//
// Promises/A is a Monad
//
// To be a Monad, it must provide at least:
// - A unit (aka return or mreturn) operation that creates a corresponding
//   monadic value from a non-monadic value.
// - A bind operation that applies a function to a monadic value

domenic

This article has been given a more permanent home on my blog. Also, since it was first written, the development of the Promises/A+ specification has made the original emphasis on Promises/A seem somewhat outdated.

You're Missing the Point of Promises

Promises are a software abstraction that makes working with asynchronous operations much more pleasant. In the most basic definition, your code will move from continuation-passing style:

getTweetsFor("domenic", function (err, results) {
 // the rest of your code goes here.