5.3. Using Blocks with Threads

I'm sure that you can think of many different uses for blocks in your code. I'm going to touch on a couple of them in the next few sections.

If you think about the way that blocks enable you to encapsulate functionality in your application in a nice neat package, functionality that can be easily reused, then it makes sense that one of the most commonly used design patterns for blocks in Objective-C is to provide code that can be run in parallel. In other words, threads.