M. Nowak n0wak

Ruby, RVM and Mountain Lion

Key problems

Mountain Lion (10.8) has three main difference compared to Lion (10.7):

XCode 4.4 does not install Command Line Tools by default
X11 isn't available anymore
The installed version of OpenSSL has some bugs

How to work around

Compass and CSS Sprites, Explained

Last week I attempted to use the CSS sprites feature of Compass for the second or third time. It's been a struggle each time, but the power and potential is there, so I keep coming back. This time was a bit different, though, because I finally decided to stop relying on the docs and dive into the code.

Before I go into the nitty-gritty, let's take a step back and talk about why I

##The Singleton Pattern

class SantaClaus {

	private static uniqueInstance : SantaClaus;

In case you don't know me already, I'm Jarrod Nettles, a Senior Developer at Apple Inc. I also go by the Twitter handle @hayvok, and blackshawk on Github (don't ask me why they're different). I have no real, formal blog since, well, I work at Apple. I'm posting this because I confused a good many people and I feel honor-bound to explain.

On April 1st Hacker News had their "Who's Hiring" thread. Since I'm currently looking for a developer, I decided to go ahead and post. Here's the content of that post, along with a link to the original.

https://news.ycombinator.com/item?id=5475813 - Original HN Post

Apple Inc: Cupertino, CA - Web Developer (PHP, Node.js, Ember.js) - Sorry, no remote!! Relocation offered. (I know, I know...) We're rebuilding an internal app from scratch and it needs to be blazing fast and real-time.
Here's our tech stack (right now).

Description

This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.

The script is here:

#!/bin/bash
convert "$1" -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 "$2"

	// Based on Glacier's example: http://docs.aws.amazon.com/AWSJavaScriptSDK/guide/examples.html#Amazon_Glacier__Multi-part_Upload
	var fs = require('fs');
	var AWS = require('aws-sdk');
	AWS.config.loadFromPath('./aws-config.json');
	var s3 = new AWS.S3();

	// File
	var fileName = '5.pdf';
	var filePath = './' + fileName;
	var fileKey = fileName;

	// Just before switching jobs:
	// Add one of these.
	// Preferably into the same commit where you do a large merge.
	//
	// This started as a tweet with a joke of "C++ pro-tip: #define private public",
	// and then it quickly escalated into more and more evil suggestions.
	// I've tried to capture interesting suggestions here.
	//
	// Contributors: @r2d2rigo, @joeldevahl, @msinilo, @_Humus_,
	// @YuriyODonnell, @rygorous, @cmuratori, @mike_acton, @grumpygiant,

	jQuery.fn.brightness = function() {
	var bg_color, rgba, y;
	bg_color = this.css('background-color');
	if ((bg_color != null) && bg_color.length) {
	rgba = bg_color.match(/^rgb(?:a)?\(([0-9]{1,3}),\s([0-9]{1,3}),\s([0-9]{1,3})(?:,\s)?([0-9]{1,3})?\)$/);
	if (rgba != null) {
	if (rgba[4] === '0') {
	if (this.parent().length) return this.parent().brightness();
	} else {
	y = 2.99 * rgba[1] + 5.87 * rgba[2] + 1.14 * rgba[3];

	// http://stackoverflow.com/questions/15829172/stop-chrome-back-forward-two-finger-swipe
	$(document).on('mousewheel', function(e) {
	var $target = $(e.target).closest('.scrollable-h');
	if ($target.scrollLeft () <= 4) {
	$target.scrollLeft(5);
	return false;
	}
	});

	using System.Collections.Generic;
	using System.Linq;
	using UnityEngine;


	/// <summary>
	/// Parallax scrolling script that should be assigned to a layer
	///
	/// This is related to the tutorial http://pixelnest.io/tutorials/2d-game-unity/parallax-scrolling/
	///