From mboxrd@z Thu Jan  1 00:00:00 1970
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From: Franck Arnaud <Franck_Arnaud@stratus.com>
Subject: Re: Interface/Implementation (was Re: Design by Contract)
Date: 1997/09/05
Message-ID: <340FF13A.98C@stratus.com>#1/1
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References: <EFqDAG.2zn@ecf.toronto.edu> <EFv7yL.yr@syd.csa.com.au>
 <EFwuzD.BxE@ecf.toronto.edu> <340F20A0.49B5@ac3i.dseg.ti.com>
Organization: (not speaking for any)
Newsgroups: comp.lang.ada,comp.lang.eiffel
Date: 1997-09-05T00:00:00+00:00
List-Id: <comp.lang.ada>


John G. Volan:

> This can result in an unnecessary run-time performance penalty when 
> a given program includes only one concerete implementation class for 
> a given abstract class (unless your programming environment is able 
> to detect and optimize this situation).

All Eiffel compilers do that optimisation (and they have to as any
routine could be polymorphic).