On 20 Dec 2008, at 4:52 pm, Graham Cox wrote:
On 20 Dec 2008, at 3:15 pm, Steve Wetzel wrote:
Regarding memory management - does it make more sense to copy the
object to be pushed from within the Stack object rather then
copying it externally before the push call? I am thinking that it
does because then that object is encapsulated which is how a stack
should really work. If I do this I realize I will need to
implement a copy method within any object that I want to place on
the stack if it does not already have one.
My own view is that the stack object shouldn't copy the object.
Of course, a very easy, and generally useful solution, is to provide
two methods:
- (void) push:(id) obj;
- (void) pushCopy:(id) obj;
G.
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