NSMutableArray - Query items without enumeration?

Question

Using LINQ in .Net I can select items from an array that match a particular criteria i.e. from an array called People:

var cleverPeople = People.Where(o=>o.IQ>110);

Is there anything similar I can do to an NSMutableArray? I have many items in it and enumerating it with a loop is pretty costly performance wise.

Answer 1

See -[NSArray filteredArrayUsingPredicate:].

Answer 2

Another option would be to use Higher Order Messaging to implement select. For example,

NSArray* cleverPeople = [[People select] greaterIQ:110];

Where greaterIQ would be a category method on People.