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User's Guide to the GNU Objective-C Class Library

9.1 Basic Adding

Adding, adding if absent, adding a copy, adding all contents of another collection, adding contents if absent, adding with varargs.

Method: Collection @keyword{-addObject:} newObject

@deftypemethodx Collection {} @keyword{-addElement:} (elt)newElement Adds newObject to the receiving collection. Returns self.

Method: Collection @keyword{-addObjectIfAbsent:} newObject

@deftypemethodx Collection {} @keyword{-addElementIfAbsent:} (elt)newElement Adds newObject to the receiving collection only if newObject isn't there already. Returns self.

Method: Collection @keyword{-addContentsOf:} (id <Collecting>)newObject

Adds all the elements in aCollection to the receiving collection. Returns self.

Method: Collection @keyword{-addContentsOfIfAbsent:} (id <Collecting>)newObject

<<Undocumented>> Returns self.

Method: Collection @keyword{-addObjectsCount:} (unsigned)count, ...

@deftypemethodx Collection {} @keyword{-addElementsCount:} (unsigned)count, ... <<Undocumented>> Returns self.

Here is an example

id o1 = [[Foo alloc] init]; id o2 = [[Bar alloc] init]; id myArray = [[[Array alloc] init] addObjectsCount: 2, o1, o2];