STL performance in iOS

I really like STL because of its simple syntax and its flexibility. Sometimes usage of开发者_JAVA技巧 STL is a must because Foundation array and dictionary cannot contain non-object. So, what I want to know are:

• Is there any performance penalty of STL in iOS ?
• Has anyone compared the performance between STL containers and the corresponding Foundation classes ?

Thanks

STL should work well on iOS, and normally it will be substantially faster than Foundation classes.