在自定义类中设置块属性 [英] Setting up a block property in custom class

问题描述

我有一个公开imageBlock属性的第三方API.我是Blocks的新手-我应该如何在课堂上设置此Block?

I have a third party API that exposes an imageBlock property. I am new to Blocks - how should I set this Block in my class?

@property (copy) NSString *(^imageBlock)(NSString *key, NSString *value, BOOL *send);

推荐答案

您的语法是正确的，但是，出于理智和可读性考虑，我建议使用typedef为此Block签名创建另一个名称:

Your syntax is correct, however, for sanity and readability I would recommend a typedef to create another name for this Block signature:

// MyClass.h

typedef NSString * (^ImageBlock)(NSString * key, NSString * value, BOOL * send);

您的财产声明将变为:

@property (copy) ImageBlock imageBlock;

和导入此标头的任何其他文件都可以看到typedef，同样使用它来提高可读性.

and any other file which imports this header can see the typedef, likewise using it to increase readability.

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