Re: [Pyobjc-dev] NSString & mutability

[David E. <epp...@ic...>]

On 2/5/03 9:39 AM +0100 Ronald Oussoren <ous...@ci...> wrote:
> I think you should read this as 'even though some methods are defined as
> returning an NSFoo they may return any subclass (like NSMutableFoo),
> depending on the actuall type is bad'. Read like that this is pretty
> relevant to our discussion: If we convert NSString and wrap
> NSMutableString (a subclass of NSString) the user may sometimes get a
> python string object and sometimes not from functions/methods that are
> documented as returning a NSString.

The bad part about this is that the mutable returns may be quite rare, so 
you won't notice for a long time that your code has a bug.  I'd rather find 
out quickly when a str() wrapper is necessary.
--
David Eppstein       UC Irvine Dept. of Information & Computer Science
epp...@ic... http://www.ics.uci.edu/~eppstein/