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Re: [Foo new] vs [[Foo alloc] init]:
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Re: [Foo new] vs [[Foo alloc] init]:


  • Subject: Re: [Foo new] vs [[Foo alloc] init]:
  • From: j o a r <email@hidden>
  • Date: Sun, 17 Feb 2008 16:47:17 -0800


On Feb 17, 2008, at 2:28 PM, Gregory Weston wrote:

+alloc is a cover for +allocWithZone: with a NULL zone. Not that you would know that from the documentation, unfortunately.

Which means, like the current behavior of new, that's an implementation detail that shouldn't really be relied on.


I can't see why this would ever matter much in practice, but if you're concerned about the API promise (or lack thereof) for "+new", why not fix it by either adding an implementation that you approve of, and that you can control, as a category to NSObject, or as a macro?

@implementation NSObject (BetterNew)
+ (id) betterNew { return [[self alloc] init]; }
@end

Problem solved, and as an additional bonus we won't have to suffer any more messages about this on the list...

j o a r


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References: 
 >Re: [Foo new] vs [[Foo alloc] init]: (From: Gregory Weston <email@hidden>)
 >Re: [Foo new] vs [[Foo alloc] init]: (From: Bill Bumgarner <email@hidden>)
 >Re: [Foo new] vs [[Foo alloc] init]: (From: Gregory Weston <email@hidden>)
 >Re: [Foo new] vs [[Foo alloc] init]: (From: Bill Bumgarner <email@hidden>)
 >Re: [Foo new] vs [[Foo alloc] init]: (From: Gregory Weston <email@hidden>)
 >Re: [Foo new] vs [[Foo alloc] init]: (From: Bill Bumgarner <email@hidden>)
 >Re: [Foo new] vs [[Foo alloc] init]: (From: Gregory Weston <email@hidden>)
 >Re: [Foo new] vs [[Foo alloc] init]: (From: Bill Bumgarner <email@hidden>)
 >Re: [Foo new] vs [[Foo alloc] init]: (From: Gregory Weston <email@hidden>)
 >Re: [Foo new] vs [[Foo alloc] init]: (From: Bill Bumgarner <email@hidden>)
 >Re: [Foo new] vs [[Foo alloc] init]: (From: Gregory Weston <email@hidden>)

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