Specialisation of std::hash for sys::fd_type.
public std::hash< int >using argument_type = ::sys::fd_typeHash function argument type.
using result_type = size_tHash function return value type.
operator()(const argument_type & rhs) const -> result_typeCompute hash as hash for int.
Wrapper for system file descriptor type (int).
operator<<(std::ostream & out, const fd_type & rhs) -> std::ostream &operator>>(std::istream & in, fd_type & rhs) -> std::istream &