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From: Maciej Sobczak <see.my.homepage@gmail.com>
Newsgroups: comp.lang.ada
Subject: Re: Generics with concrete and class-wide types
Date: Tue, 1 Apr 2008 02:51:19 -0700 (PDT)
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On 1 Kwi, 11:42, "Dmitry A. Kazakov" <mail...@dmitry-kazakov.de>
wrote:

> Just a small side note. If you care about performance you should do exactly
> the opposite you tried to, i.e. you should instantiate it with a specific
> type rather than with a class of.

This is exactly what I want to do.
If I have the knowledge of the specific iterator type, I want to
instantiate the subprogram with this specific type to facilitate
direct dispatch and code inlining.
When the only this I have is 'Class, then I want to instantiate the
subprogram with what I have and agree for indirect dispatch to
iterator operations within the subprogram body.

The question is whether it is possible in Ada without walking on the
edge of compiler conformance - and in particular without accidentally
benefiting from any compiler bug that will bite me later on when it's
fixed.
Yes, some bugs can be harmful after they are fixed. :-)

I will try the scheme proposed by Georg.

--
Maciej Sobczak * www.msobczak.com * www.inspirel.com