Re: [Boost-users] [mpl] is_constructible_from

Subject: Re: [Boost-users] [mpl] is_constructible_from
From: Noah Roberts (roberts.noah_at_[hidden])
Date: 2009-03-17 12:20:15

Roman Perepelitsa wrote:
> I need a metafunction that returns true iif a type has a constructor 
> with 2 arguments of a given type. Does mpl have it? If not, is it 
> possible to implement?

As has been explained it's impossible.  However, if you change the 
construction syntax of your objects you could do it.  If you made the 
constructors private or protected and provided a static function for 
building them you'd have something that can be tested with metaprogramming.

Not saying this will help you, but it's an idea.