boost::beast::get_lowest_layer< T, class > Struct Template Reference

#include <type_traits.hpp>

Public Types
using	type = T

Detailed Description

template<class T, class = void>
struct boost::beast::get_lowest_layer< T, class >

Returns T::lowest_layer_type if it exists, else T

This will contain a nested type equal to T::lowest_layer_type if it exists, else type will be equal to T.

Example

Declaring a wrapper:

template<class Stream>
struct stream_wrapper
{
    using next_layer_type = typename std::remove_reference<Stream>::type;
    using lowest_layer_type = typename get_lowest_layer<stream_type>::type;
};

Defining a metafunction:

template<class T>
using is_stream_wrapper : std::integral_constant<bool,
    ! std::is_same<T, typename get_lowest_layer<T>::type>::value> {};

Member Typedef Documentation

template<class T, class = void>

using boost::beast::get_lowest_layer< T, class >::type = T

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The documentation for this struct was generated from the following file:

• 3pp/beast/boost/beast/core/type_traits.hpp