cchacin

Optionals vs. Nulls

Given a computer object get the USB version of the computer's soundcard, and if it's null return UNKNOWN

Java 7 traditional approach

class Computer {
    private final Soundcard soundcard;

    Computer(final Soundcard soundcard) {

inindev

/* 
 * derivative work of Matheus de Oliveira's json_manipulator.sql
 *   https://gist.github.com/matheusoliveira/9488951 
 *
 *  adapted to support postgresql 9.4 jsonb type
 *  no warranties or guarantees of any kind are implied or offered
 *
 *  license is as Matheus conferred it on 4/9/2015:
 *  matheusoliveira commented on Apr 9
 *    @hannes-landeholm, I'd like to take credit if you share them 

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:

kix

http://www.dizzy.co.uk/cheatsheets
This work is licensed under the Creative Commons
Attribution-NonCommercial-NoDerivs 2.0 License. To
view a copy of this license, visit
http://creativecommons.org/licenses/by-nc-nd/2.0/uk


########## Shell Commands ##########	
Installation:
$ gem install capistrano

andruby

after "deploy:symlink", "deploy:restart_workers"

##
# Rake helper task.
# http://pastie.org/255489
# http://geminstallthat.wordpress.com/2008/01/27/rake-tasks-through-capistrano/
# http://ananelson.com/said/on/2007/12/30/remote-rake-tasks-with-capistrano/
def run_remote_rake(rake_cmd)
  rake_args = ENV['RAKE_ARGS'].to_s.split(',')
  cmd = "cd #{fetch(:latest_release)} && #{fetch(:rake, "rake")} RAILS_ENV=#{fetch(:rails_env, "production")} #{rake_cmd}"