Re: [Boost-users] [mpl] is_constructible_from

on Fri Mar 13 2009, 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?

template struct is_constructible_from;

struct foo { foo(int, int); }; struct bar { bar(int*, int); }; struct baz {};

int main() { assert(is_constructible_from::value); assert(is_constructible_from::value); assert(!is_constructible_from::value); assert(!is_constructible_from::value); };

I know of no way to do that. -- Dave Abrahams BoostPro Computing http://www.boostpro.com