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From: "Bertrand Augereau" <baugereau@ifrance.kom>
Newsgroups: comp.lang.ada,comp.lang.c,comp.lang.c++
Subject: Re: How Ada could have prevented the Red Code distributed denial of
     service attack.
Date: Tue, 14 Aug 2001 15:32:04 +0200
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Xref: archiver1.google.com comp.lang.ada:11911 comp.lang.c:74150
 comp.lang.c++:82454
Date: 2001-08-14T15:32:04+02:00
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> With templates, you can evaluate this mapping at compile time,
> enum A {a=12,b=38,c=95};
>
> template<A v> const char* GetImage (void);
> template<> const char* GetImage<a> (void) { return "a"; }
> template<> const char* GetImage<b> (void) { return "b"; }
> template<> const char* GetImage<c> (void) { return "c"; }
>

Ok, sorry for the previous answer, I didn't get the fact that 'Image was
giving the string at run-time depending of the actual value of the enum.
In fact's there's no other way for implementing this pattern that a big
switch, which is way less elegant than 'Image attribute, which leaves the
task to the compiler.