[boost] constraints for ConvertibleConcept

From: v m (boost_vam_at_[hidden])
Date: 2002-10-31 14:48:04

The following is the ConvertibleConcept from
http://www.boost.org/boost/concept_check.hpp

template <class X, class Y>
  struct ConvertibleConcept
  {
    void constraints() {
      Y y = x;
      ignore_unused_variable_warning(y);
    }
    X x;
  };

----------
Consider the situation where 
1. operator Y & (or const Y &) is defined in class X
2. Y is not copy constructible.

In this situation the above test fails, though X is
convertible to Y.

How about using something like:
BOOST_STATIC_ASSERT(boost::is_convertible<X,Y>::value)
?

=====
Vamshi Mugu
North Dakota State University

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