rklemme

require 'yaml'

Track = Struct.new :title, :duration

# An Album represents an audio medium which has title,
# interpret, a pause duration between tracks and a list
# of individual tracks.
class Album
  attr_reader :title, :interpret, :pause

dnagir

# RSpec 2.0 syntax Cheet Sheet by http://ApproachE.com

# defining spec within a module will automatically pick Player::MovieList as a 'subject' (see below)
module Player
	describe MovieList, "with optional description" do
		  
	  it "is pending example, so that you can write ones quickly"
	  
	  it "is already working example that we want to suspend from failing temporarily" do
		pending("working on another feature that temporarily breaks this one")

chriseppstein

Sass/Less Comparison

In this document I am using Sass's SCSS syntax. You can choose to use the indented syntax in sass, if you prefer it, it has no functional differences from the SCSS syntax.

For Less, I'm using the JavaScript version because this is what they suggest on the website. The ruby version may be different.

Variables

dansimpson

pre.code { background: #181818; padding: 16px; color: #F8F8F8; font-family: Consolas, Monaco,"Lucida Console"; }
pre.code * { font-family: Consolas, Monaco,"Lucida Console"; }
pre.code .hll { background-color: #ffffcc }
pre.code .c { color: #5F5A60; font-style: italic } /* Comment */
pre.code .err { border:#B22518; } /* Error */
pre.code .k { color: #CDA869 } /* Keyword */
pre.code .cm { color: #5F5A60; font-style: italic } /* Comment.Multiline */
pre.code .cp { color: #5F5A60 } /* Comment.Preproc */
pre.code .c1 { color: #5F5A60; font-style: italic } /* Comment.Single */
pre.code .cs { color: #5F5A60; font-style: italic } /* Comment.Special */

lucasfais

Sublime Text 2 – Useful Shortcuts (Mac OS X)

General

⌘T	go to file
⌘⌃P	go to project
⌘R	go to methods
⌃G	go to line
⌘KB	toggle side bar
⌘⇧P	command prompt

yangchenyun

# Originally from https://github.com/mathiasbynens/dotfiles/blob/master/.osx

# Enable the 2D Dock
defaults write com.apple.dock no-glass -bool true

# Disable menu bar transparency
defaults write -g AppleEnableMenuBarTransparency -bool false

# Expand save panel by default
defaults write -g NSNavPanelExpandedStateForSaveMode -bool true

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

creationix

The Basics

Every stream has two basic parts

• data-in - A chunk or EOF enters the stream
• data-out - A chunk or EOF leaves the stream

I'm combining both "data" and "end" events since "end" is just a special data packet signifying the end of the stream.

Flow Control

jehiah

#!/bin/sh
# This script takes a photo if the computer has not been idle for longer than a period of time
# it uses isightcapture from https://www.macupdate.com/app/mac/18598/isightcapture

[ -z "$USER" ] && echo "missing variable \$USER " && exit 1
if [ ! -d /Users/$USER/daily_photo ]; then
    mkdir -p $/Users/$USER/daily_photo
fi
IDLE=$((`/usr/sbin/ioreg -c IOHIDSystem | sed -e '/HIDIdleTime/!{ d' -e 't' -e '}' -e 's/.* = //g' -e 'q'` / 1000000000 ))
export SUDO_ASKPASS=/Users/$USER/bin/get_pass.sh

dergachev

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application: