Boost C++ Libraries

Determine if T meets the requirements of AsyncReadStream.

Synopsis

Defined in header <boost/beast/core/stream_traits.hpp>

template<
    class T>
using is_async_read_stream = see-below;

Description

Metafunctions are used to perform compile time checking of template types. This type will be std::true_type if T meets the requirements, else the type will be std::false_type.

Example

Use with static_assert:

template < class AsyncReadStream>
void f(AsyncReadStream& stream)
{
    static_assert (is_async_read_stream<AsyncReadStream>::value,
        "AsyncReadStream type requirements not met" );
...

Use with std::enable_if (SFINAE):

template < class AsyncReadStream>
typename std::enable_if<is_async_read_stream<AsyncReadStream>::value>::type
f(AsyncReadStream& stream);