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From: "kevin  cline" <kevin.cline@gmail.com>
Newsgroups: comp.lang.ada
Subject: Re: why learn C?
Date: 13 Apr 2007 16:18:13 -0700
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On Apr 12, 11:18 am, Markus E Leypold
<development-2006-8ecbb5cc8aREMOVET...@ANDTHATm-e-leypold.de> wrote:
> Hyman Rosen <hyro...@mail.com> writes:
> > jimmaureenrog...@worldnet.att.net wrote:
> >> I discovered that C++ template language does not allow the
> >> specification of a floating point value as a template parameter.
>
> > In C++, instantiations are considered the same if their
> > parameters are the same, and the standards committee did
> > not want the burden of defining T<3.0*(1.0/3.0)> vis a vis
> > T<1.0>.
>
> We have been through that discussion before. IMHO that this decision
> was even necessarry indicates (in my eyes) the inferiority of the
> automatic instantion approach.

Automatic instantiation allows one to write very powerful libraries in
C++ that are impractical to implement in Ada.  For a good example, see
the SPIRIT parser library (http://www.boost.org/libs/spirit/
index.html).  So the choice can comes down to hundreds of lines of C++
or thousands of lines of Ada.