Is there a Stack class in Objective C that I can import and use?

I need a stack ADT in my application. I would like to avoid making a wrapper on NSMutableArray; there must 开发者_C百科be an efficient implementation in Foundation somewhere.

So, how do I access it?

You've got a couple of options; if you really want a stack, you could use std::stack from STL. Just be sure to include #import <stack> rename any .m files which use it to .mm.

The other option is to write an Objective-C class which either wraps std::stack, or provides a stack interface to NSMutableArray. I include this despite your wishes to the contrary, because unless you have actually profiled the code that uses NSMutableArray, you have absolutely no business complaining about its performance.