what does -arrayWithArray actually DO?

Question

I want to see EXACTLY how it creates an array. How can I view the .m files that show how it\'s done?

Answer 1

GNUstep, the GNU implementation of the OPENSTEP spec from which Cocoa and Cocoa Touch descend, implements +arrayWithArray: as follows:

/**
 * Returns a new autoreleased NSArray instance containing all the objects from
 * array, in the same order as the original.
 */
+ (id) arrayWithArray: (NSArray*)array
{
  id    o;

  o = [self allocWithZone: NSDefaultMallocZone()];
  o = [o initWithArray: array];
  return AUTORELEASE(o);
}

http://svn.gna.org/viewcvs/gnustep/libs/base/trunk/Source/NSArray.m?view=markup