从什么时候开始Xcode不再需要转发方法声明，为什么? [英] Since when does Xcode no longer require forward method declarations and why?

问题描述

我注意到Xcode(或更确切地说是Apple LLVM编译器?)不再需要前向方法声明.换句话说，以下代码在生成时不会发出警告:

I noticed that Xcode (or more precisely the Apple LLVM compiler?) does not longer require forward method declarations. In other words, the following code builds without warnings:

@implementation Foo

-(void) foo {
    [self bar];
}

-(void) bar {}

@end

这曾经在-foo中引发警告，说Foo可能不响应-bar，对吗?编译器现在更聪明了吗?还是其他呢?我正在使用Xcode 4.3.1和Apple LLVM编译器3.1.

This used to throw a warning in -foo saying that Foo might not respond to -bar, right? Is the compiler smarter now or is this something else? I’m using Xcode 4.3.1 plus Apple LLVM compiler 3.1.

推荐答案

这肯定已经改变了，看起来Xcode 4.3&之后. cf. Objective-C中的私有方法，在Xcode 4.3中，我不再需要在实现文件中声明它们?.

This has definitely changed, and it looks like such forward declarations are not required in Xcode 4.3 & later. Cf. Private Methods in Objective-C, in Xcode 4.3 I no longer need to declare them in my implementation file ?.

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