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A type trait that determines whether a require
expression is
well-formed.
template< typename T, typename... Properties> struct can_require
Class template can_require
is a trait that is derived from
true_type
if the expression boost::asio::require(std::declval<T>(),
std::declval<Properties>()...)
is well formed; otherwise false_type
.
Header: boost/asio/require.hpp
Convenience header: boost/asio.hpp