Re: [boost] [concept] EqualityComparable metafunction

On Mon, Sep 5, 2011 at 3:30 PM, Lorenzo Caminiti <lorcaminiti@gmail.com>wrote:

Hello all,

What is the best way to check if a type T is EqualityComparable?

Essentially, I would need a is_equality_comparable<> metafunction:

struct mytype {};

is_equality_comparable<int>::value // true is_equality_comparable<mytype>::value // false

Can I re-use the boost::EqualityComparable concept to implement is_equality_comparable<>? Or, shall I just try to use introspection-SFINAE techniques?

Thanks in advance. --Lorenzo

I think the (relatively) recently-reviewed TypeTraits Extension by Frederic Bron has what you're looking for, although I have no idea what the name of the particular metafunction is at the moment :) has_operator_equals? - Jeff