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Re: init returns nil or raises exception?
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Re: init returns nil or raises exception?


  • Subject: Re: init returns nil or raises exception?
  • From: Jean-Daniel Dupas <email@hidden>
  • Date: Thu, 7 Oct 2010 18:12:29 +0200

Le 7 oct. 2010 à 18:04, Kyle Sluder a écrit :

> On Thu, Oct 7, 2010 at 12:47 AM, Remco Poelstra <email@hidden> wrote:
>> While still in the process of cleaning up my code, I read in the documentation of NSObject that -init should return nil if it fails to initialize. But a paragraph lower it's stated that -init should always return a functional instance or raise an exception. Isn't that in conflict with the allowance of returning nil?
>
> File a documentation bug. I would imagine the paragraph about the
> exception is saying that an exception must be raised rather than
> returning a half-constructed instance of the object.



I agree. The "must raise an exception"  is a bug in the documentation IMHO.
There is a lot of recent API that used the 'return nil' pattern (especially methods design to return an NSError by ref).

-- Jean-Daniel




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 >init returns nil or raises exception? (From: Remco Poelstra <email@hidden>)
 >Re: init returns nil or raises exception? (From: Kyle Sluder <email@hidden>)

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