ios - 为什么属性在不合成的情况下仍然有效？

Question

我在.h

@property (nonatomic) NSString *yourMom;

然后在.m

禁止合成! 在viewdidload中直接访问:

_yourMom = @"Sally";

这无需合成即可工作。为什么？

Answer 1

Objective-C @properties are synthesized by default when not explicitly implemented.

Unless you specify otherwise, the synthesized instance variable has the same name as the property, but with an underscore prefix. For a property called firstName, for example, the synthesized instance variable will be called _firstName.

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