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Date: Wed, 19 Jun 2002 12:40:47 -0400
From: Hyman Rosen <hyrosen@mail.com>
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Subject: Re: status of Ada STL?
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Date: 2002-06-19T12:40:47-04:00
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Russ wrote:
> The short answer is no. It cannot be done by the compiler. (If you
> don't believe me, go ahead and chase your tail for a while.) However,
> it could be done by a specialized pre-processor. There was talk of
> adding something like that to C++ a while back, just so that people
> could write more elegant code, such as
> 
> A = B + C
> 
> and have it automatically converted to the less attractive but more
> efficient form
> 
> A  = B
> A += C
> 
> I don't know if it ever went anywhere, but it does show that C++
> programmers are well aware of these issues.

Not only has it gone somewhere, it went there on steroids.
And it's all doable using existing C++ (albeit to its full
extent), so it doesn't require language changes. See
<http://www.oonumerics.org/blitz/whatis.html>.

Check out <http://www.boost.org/libs/lambda/doc/index.html>
while you're at it.

Automatic template instanciation and partial specialization of
templates form an incredibly useful and powerful tool. (It's
actually Turing-complete!) It's my favorite aspect of C++.