Re: Multiple interfaces

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#242

From: Coho (Richard Swain)
Date: Fri, 21 Jun 2002 21:20

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But that doesn't address the original problem  - "How does one 
distinguish between methods that happen to have the same name on two 
different interfaces inherited by the implementation?"



Chris Smith wrote:
> Coho (Richard Swain) wrote ...
> 
>>What is the answer?
>>
> 
> 
> The answer is to pass the abstraction that represents the set of 
> information that the method needs, and to declare the method to accept 
> the set of information that it needs.  To complain about not being able 
> to get back to the original interface is, essentially, complaining that 
> you can't write a method declared to take one type parameter, and then 
> have it access that data as a different type.  If the method needed to be 
> able to treat the object as a MyClass, it should never have declared its 
> parameter to be of type Intf1.
> 
> I honestly can't find a single reason that this is even a problem, aside 
> from the fact that someone said that dropping any kind of information 
> makes them feel "alienated".  Programming without ever dropping 
> information is antithetical to abstraction, and it's not workable.
> 
> Chris Smith



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Subject: Re: Multiple interfaces
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