5.4. Working with Common Block Design Patterns

I showed you how you can use blocks with GCD to dispatch units of work to threads. Now take a look at some other common block patterns. In these cases, there are examples of where you might use blocks with standard framework APIs to do things a bit more efficiently or cleanly than you would be able to do them without blocks.

5.4.1. Using code blocks for maps

A common operation that is used to demonstrate the power of blocks in other languages is in implementing a map algorithm.