Re: [boost] MPL's "round" lambda

From: Joel de Guzman (djowel_at_[hidden])
Date: 2002-11-18 09:08:32

----- Original Message ----- 
From: "Peter Dimov" <pdimov_at_[hidden]>

> From: "Aleksey Gurtovoy" <agurtovoy_at_[hidden]>
> > If you are tired of angle brackets in your templates (no, it's not a TV
> > commercial :), may be you'll like this one:
> > 
> >     typedef eval<
> >           count_if(
> >               list(int,char,long,int)
> >             , lambda(is_same(_,int))
> >             )
> >         >::type res;
> > 
> >     BOOST_STATIC_ASSERT(res::value == 2);
> 
> OK, I give up. How does this work?

I've been twisting my mind very hard the past hour trying to
imagine how this will work without peeking at the code.
Whew, this is a tough one to crack!

--Joel