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From: Matthew Heaney <mheaney@on2.com>
Newsgroups: comp.lang.ada
Subject: Re: Containers - nontrivial element access
Date: Wed, 03 Oct 2007 15:37:53 -0700
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On Oct 3, 4:21 pm, "Dmitry A. Kazakov" <mail...@dmitry-kazakov.de>
wrote:
>
> Egh, but vector is an array, see 1b in:

I have no interest engaging in ontological debates.  (I am a
pragmatist, not a Platonist.)  The vector container in the Ada
standard container library (and I'm in a very good position to know!)
is emphatically not a generalization of an Ada array.

My reason for saying that the C++ vector *is* a like an array, and the
Ada vector is *not* like an array, is that in C++ the vector is
guaranteed to be implemented as contiguous array of memory.  There is
a separate container (a deque) that has time and space semantics
different from a vector.

The standard container library in Ada does not make such a
distinction, and the standard vector container can be implemented
using whatever mechanism suits the implementation.  Hence my claim
that the vector (in the Ada standard container library) is not a
generalization of an array.