如何获得可可中NSArray的前x个元素? [英] How do I get first x elements of an NSArray in Cocoa?

问题描述

可可的新手，似乎缺少了一些东西.

New to Cocoa, and seem to be missing something.

将NSArray的前x个元素用作另一个NSArray的最优雅/惯用的方法是什么?显然，我可以遍历它们并手动存储它们，但是似乎必须有一种更标准的方法来执行此操作.

What is the most elegant/idiomatic way to obtain the first x elements of an NSArray as another NSArray? Obviously I can iterate through them and store them manually, but it seems like there has to be a more standard method of doing this.

我期望有一个-arrayWithObjectsInRange:或类似的东西，但是什么也看不到...

I was expecting there to be an -arrayWithObjectsInRange: or something similar, but don't see anything...

NSArray* largeArray...// Contains 50 items...

NSArray* smallArray = // fill in the blank     

// smallArray contains first 10 items from largeArray

谢谢！

推荐答案

您可以使用

You can use subarrayWithRange:.

NSArray *smallArray = [largeArray subarrayWithRange:NSMakeRange(0, 10)];

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