objective-c - typedef void (^BWStatusBarBasicBlock)(void);类型说明作用?

Question

typedef void (^BWStatusBarBasicBlock)(void); xcode中这个类型说明有说明作用?

Answer 1

The questioner must be asking about https://github.com/brunow/BWStatusBar...

in this project

typedef void (^BWStatusBarBasicBlock)(void);

In fact, it typedefs a block whose parameter is void and whose return type is void.

In other words, when using the void (^)(void) type, you can use BWStatusBarBasicBlock instead. This is no different from typedef int myint, except that the defined type is changed to block.