Design Patterns discussion

[Mikal Ziane <Mikal.Ziane AT lip6.fr>]

That's my point Wayne !
Ray is right though that typically the abstraction is expected to change 
too, but I am not sure at all that this is mandatory.
In any case a simple version of the pattern can be applied even if the 
abstraction does not change.
Hence the difference between Bridge and Strategy is not, IMO, as clear cut 
as Ray seems to consider.


A 17:44 06/11/2003 -0800, Wayne Cannon a écrit :
> Mikal,
>
> One of the specific uses called out for the Bridge pattern is for 
> dynamically selected implementations.  Refer to the Bridge pattern, 
> "Applicability" section, "Use the Bridge pattern when (1) you want to 
> avoid a permanent binding between an abstraction and its implementation. 
> This might be the case, for example, when the implementation must be 
> selected or switched at run-time".
>
> --Wayne
>
> Mikal Ziane wrote:
>
> > Ray,
> >   You would not use Bridge to dynamically select or change the data
> > representation of an abstraction A even if A itself does not change ?
>
>
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