What object are you talking about? NSData have -bytes method and others would require you drop to CF code (or probably impossible)
Check for methods with "return internal pointer" attribute or fast iteration protocols. If you need fine tuned control over that you may need to drop to C or use GNUstep implementations of respective Foundation classes. (BTW GNUstep uses COW whenever possible) Sent from my iPhone > On Apr 27, 2014, at 5:00 PM, Dave <d...@looktowindward.com> wrote: > > Hi All, > > A long time back, I remember reading something about the way in which copy > and mutableCopy are implemented. I think basically it said that: > > someObject = [someOtherObject copy]; > > or > > someObject = [someOtherObject mutableCopy]; > > Wouldn’t necessarily allocate any extra data storage. I’ve been searching for > it to refresh my memory, but I can’t see to find it anywhere. Does anyone > know if this document or something like it exists somewhere? > > Thanks a lot > Dave > > > _______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/cocoa-dev/xcvista%40me.com > > This email sent to xcvi...@me.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
