[boost] Re: [Review] Named parameters library

From: Thorsten Ottosen (nesotto_at_[hidden])
Date: 2004-11-18 13:46:44

"David Abrahams" <dave_at_[hidden]> wrote in message
news:ur7mr133a.fsf_at_boost-consulting.com...
| "Thorsten Ottosen" <nesotto_at_[hidden]> writes:

| The enclosed will show the difference on any compiler I can get my
| hands on.  I'd be happy to show you the output if you need proof.  On
| most compilers it's a factor of 2.

indeed. Thanks for fixing the bugs :-)

|             for( int i = 0; i != sz; ++i )
|             {
|                 Foo< std::vector<int> > f;
|                 f.v = foo();

If you try to write

                Foo< std::vector<int> > f = { foo() };
                l += print( f.v );

there should be no difference again.

I'm still a little puzzled about why

1. adding an inline constructor to Foo
2. using assignment syntax

is not leading to any optimization when the above syntax does.

-Thorsten