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|-||http://www.gnustep.org/resources/documentation/Developer/Base/Reference/NSEnumerator.html#class$NSEnumerator||+||[http://www.gnustep.org/resources/documentation/Developer/Base/Reference/NSEnumerator.html#class$NSEnumerator NSEnumerator] in gnustep-base allow for iteration over collection.|
|-||NSEnumerator in gnustep-base allow for iteration over collection.||+|
|== Using NSEnumerator ==||== Using NSEnumerator ==|
Revision as of 21:48, 3 April 2007
NSEnumerator in gnustep-base allow for iteration over collection.
The following example demonstrates the use of NSEnumerator with an NSArray object:
NSArray *aArray = [NSArray arrayWithObjects: @"John", @"Bob", @"Jane"]; NSEnumerator *enumerator = [aArray objectEnumerator]; id obj; while(obj = [enumerator nextObject]) doSomethingWithObject( obj );
Getting an NSEnumerator from a Collection
The NSArray, NSSet, and NSDictionary collection objects all include the -objectEnumerator method. NSDictionary also includes -keyEnumerator, which enumerates over the dictionary keys instead of the objects.