value_type_t

template<typename T >

using eve::value_type_t = typename decltype(detail::value_type_impl<T>())::type

Template Parameters

T	Type to process

value_type_t<T> is computed as follows:

• If T has begin/end - value_type_t for return type of begin
• If T is std::iterator -> returns iterator_traits<T>::value_type
• If T has nested value_type -> returns it
• If T is a product type and all elements have value_type_t defined for them -
• kumi::tuple for the individual product types.
• Otherwise it's undefined.

Template Parameters

T	Type to process

Required header: #include <eve/traits.hpp>