如何判断对象是否在NSArray中？ [英] How to tell if object is in NSArray?

问题描述

有没有办法判断某个物体是否在NSArray中？我将对象添加到数组的方式使得可以多次添加同一个对象，我想看看是否有方法可以查看该数组中是否已存在（任何地方）。

Is there a way to tell if a certain object is in an NSArray? The way I am adding objects to my array makes it possible for the same object to be added multiple times and I wanted to see if there was a way to see if it was already there (anywhere) in that array.

推荐答案

NSArray containsObject：方法正是出于此目的，其完整签名为：

The NSArray containsObject: method is precisely for this purpose, its full signature being:

- (BOOL)containsObject:(id)anObject

查看完整的 NSArray类参考文档以获取更多信息。

See the full NSArray Class Reference docs for more information.

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