Graphics Programs Reference
In-Depth Information
27
Blocks
In this chapter, you will learn about a C and Objective-C language feature called blocks. A
block
is a set of instructions. It is an object, but it is called like a function. Blocks provide
conveniences for a programmer and performance boosts for applications. If you are famili-
ar with other high-level languages, you may know blocks as
closures
or
anonymous func-
tions
. This chapter will introduce blocks and their syntax. In the next chapter, you will put
blocks to use in your
Nerdfeed
application.
