Objective-C:消息语法与点语法；有什么不同? [英] Objective-C: message syntax vs. dot syntax; what's the difference?

问题描述

如果我使用的是@synthesize foo;，则以下内容之间有什么区别:

If I'm using @synthesize foo;, what's the difference between the following:

// message syntax
[myObj setFoo:5];
[myObj foo];

和

// dot syntax
myObj.foo = 5;
myObj.foo;

我喜欢点语法的一致性，但是我不知道它是否在做我应该关注的事情.

I like the consistency of the dot syntax but I don't know if it's doing something I should be I concerned about.

任何其他信息都会有很大帮助.

Any additional information would be a great help.

推荐答案

使用点语法和使用消息语法之间没有功能上的区别.

There is no functional difference between using dot syntax and using message syntax.

我发现使用消息语法与整个语言更加一致，而点语法的实现只是为了方便那些使用Java的语言的程序员.

I find that using message syntax is more consistent with the language as a whole and that dot syntax was just implemented as a convenience to programmers who were coming over from languages that used it (Java comes to mind).

我要问的是:无论选择哪个，都要与之保持一致. 请勿混合使用单个属性设置器！ (多参数二传手显然是免税的.)

All I ask is: Whichever one you choose, be consistent with it. Do not mix and match single property setters! (Multiple-argument setters are obviously exempt).

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