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Re: Mutable Convenience Methods

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Re: Mutable Convenience Methods

Subject: Re: Mutable Convenience Methods
From: Jean-Daniel Dupas <email@hidden>
Date: Wed, 20 Feb 2008 17:50:05 +0100


Le 20 févr. 08 à 17:20, Jonathon Mah a écrit :

Hi,
I'm wondering if there's agreement on this before I submit it as a bug:

I think mutable subclasses should override the convenience methods of their superclass to return a mutable version. For example, [NSMutableArray array] and [NSMutableString string] both return mutable versions, but [NSMutableParagraphStyle defaultParagraphStyle] does not. Is this considered a bug in NSMutableParagraphStyle?
Jonathon Mah
email@hidden

According to the documentation, +defaultParagraphStyle returns an NSParagraphStyle *. The return value is explicitly not mutable. +string, +array, +dictionary and friends return id, that is an instance of the caller class (by convention).

You may fill an enhancement request and ask a +mutableDefaultParagraphStyle method , but I don't think we can considere the present behavior as a bug.

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References:  
  >Mutable Convenience Methods (From: Jonathon Mah <email@hidden>)




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