Re: Multiple Inheritance
Re: Multiple Inheritance
- Subject: Re: Multiple Inheritance
- From: Thomas Davie <email@hidden>
- Date: Thu, 24 May 2012 11:43:18 +0100
Implement abstract classes that implement the methods, then use the runtime to copy the methods into the classes that should have them in +initialize.
Bob
On 24 May 2012, at 10:14, Gerriet M. Denkmann wrote:
> I have an abstract class M with subclasses MAB, MAX, MXB.
>
> There are several lengthy methods A which are used in MAB and MAX, and others methods B which are used in MAB and MXB.
>
> Methods A use a property NSUInteger index.
> Class MXB has no such property, is has NSIndexSet *indices instead.
>
> Similar for methods B.
>
> Currently these common methods are present in both classes.
> But: this is less than perfect - meaning that each change has to be done twice.
>
> What to do?
> Have a file methodsA.m which is included in both MAB and MAX (and same for methodsB.m) ?
>
> Other, better solutions?
>
>
> Kind regards,
>
> Gerriet.
>
>
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