qb::detail::has_begin_end< T > Struct Template Reference

Type trait to detect whether T has begin() and end() methods. More...

#include <type_traits.h>

Inheritance diagram for qb::detail::has_begin_end< T >:

Collaboration diagram for qb::detail::has_begin_end< T >:

Static Public Attributes
static bool const	beg_value = sizeof(f<T>(nullptr)) == sizeof(yes)
	Whether the type has a valid begin() method.
static bool const	end_value = sizeof(g<T>(nullptr)) == sizeof(yes)
	Whether the type has a valid end() method.

Detailed Description

template<typename T>
struct qb::detail::has_begin_end< T >

Type trait to detect whether T has begin() and end() methods.

Checks if the type has proper const_iterator returning begin and end methods.

Template Parameters

T	Type to check