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From: "Jerry Coffin" <jcoffin@taeus.com>
Newsgroups: comp.lang.ada,comp.lang.c++,comp.realtime,comp.software-eng
Subject: Re: Teaching new tricks to an old dog (C++ -->Ada)
Date: 8 Mar 2005 06:37:03 -0800
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Date: 2005-03-08T06:37:03-08:00
List-Id: <comp.lang.ada>

Falk Tannh=E4user wrote:

[ ... ]

> I would put the "using namespace std;", or even better, just
> "using std::swap;" into the "sort" function, at the scope of the
> block from where the "swap" is called.

Oh, of course. When you're making something visible, you nearly always
want to limit the visibility as much as practical.

> This way, the precise purpose
> of the "using" declaration becomes clear to both the human reader
> and the compiler (because unwanted side effects due to name
> collisions are avoided).
> Furthermore, the implementer of "whatever_type" should consider to
> put the specialisation of "swap" into the "std" namespace, which
> is possible by =A7 17.4.3.1/1 of the Standard.

A perfectly reasonable possiblity, but the sort function shouldn't
depend on it.

--
    Later,
    Jerry.

The universe is a figment of its own imagination.