Re: Use of Mac OS X 10.5 / Leopards Garbage Collection Considered Harmful
Re: Use of Mac OS X 10.5 / Leopards Garbage Collection Considered Harmful
- Subject: Re: Use of Mac OS X 10.5 / Leopards Garbage Collection Considered Harmful
- From: glenn andreas <email@hidden>
- Date: Wed, 6 Feb 2008 09:45:43 -0600
On Feb 6, 2008, at 3:39 AM, John Engelhart wrote:
On Feb 5, 2008, at 7:40 AM, Alastair Houghton wrote:
On 5 Feb 2008, at 00:14, John Engelhart wrote:
I had such high hopes for Cocoa's GC system because once you're
spoiled by GC, it's hard to go back.
Unfortunately, the 4-5 months of time I've put in on Leopard's GC
system has not been nearly as pleasant. It has been outright
frustrating, and it's reached the point where I consider the
system untenable.
Honestly, this point has now been answered over and over.
I think it comes down to the fact that you have failed to
appreciate that Cocoa GC is designed for easy use with *OBJECTS*.
If you're using it with objects, it "just works".
You misunderstand what Objective C is, and how it works. "Objects"
is synonymous for "Structs".
If that were true, you'd be able to declare objects as local variables
(as opposed to as pointers to structures):
NSPoint aPoint; // <-- NSPoint = struct, legal
NSString aString; // <-- NSString = object, Illegal
(yes, at one time there was an attempt to add support for that, but it
didn't survive).
Structures don't have "magic invisible members":
@interface Foo {
}
@end
Foo *aFoo;
NSLog(@"Foo is a %@", aFoo->isa);
Notice how there is an "isa" member that is automatically put there,
not unlike the way that a C++ object might have a vtable (or other
internal plumbing for multiple inheritance).
Glenn Andreas email@hidden
<http://www.gandreas.com/> wicked fun!
quadrium | flame : flame fractals & strange attractors : build,
mutate, evolve, animate
_______________________________________________
Cocoa-dev mailing list (email@hidden)
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:
This email sent to email@hidden