Re: [Boost-users] Lambda expressions

From: Lucio Flores (dogboy_l_at_[hidden])
Date: 2006-05-09 01:39:05

--- David Abrahams <dave_at_[hidden]> wrote:

> Lucio Flores <dogboy_l_at_[hidden]> writes:
> 
> > I posted this question a few months ago, but I got pulled away to deal with
> > more pressing work issues. So here it goes again:
> >
> > I'm trying to use lambda expressions to implement 'twice'. So I came up
> with
> >
> >
> > typedef mpl::apply<_1, mpl::apply<_1, _2> > lambda_type;
> >
> > typedef lambda_type<boost::add_pointer<_1>, int> result_type;
> 
> Surely that doesn't compile(?)  lambda_type is a type; you can't follow
> it with a template argument list.
> 

You're right!  .... But it did compile.... So what's the correct usage? Would
it be:

typedef mpl::apply< lambda_type, boost::add_pointer<_1>, int>::type
result_type;

???

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