I'm using Xcode on daily basis and get used to code snippets because I hate write code something that I've already written so many times. Here are copies of my snippets, feel free to fork and use them or comment down there so I can improve them.
beny/Xcode-UserData
My custom Xode code UserData like code snippets and keybindings, located @ ~/Library/Developer/Xcode/UserData/