8 Ways to use Blocks in Snow Leopard

Snow Leopard introduced Blocks. They are pieces of code that can be saved and passed around, making ObjC even more dynamic. They capture the scope around them, that is the local variables of your functions, and let you use it. They take arguments you specify and let you call them anytime. Blocks are like function pointers, except they don't suck. Here's a few use cases for this new beast.