OUTCOME_USE_STD_IS_NOTHROW_SWAPPABLE

Whether to implement is_nothrow_swappable<T> as std::is_nothrow_swappable<T>, or else use a local emulation.

Overridable: Define before inclusion.

Default: If the current compiler implements C++ 17 or later, if unset this macro is defaulted to 1, otherwise it is defaulted to 0.

Header: <outcome/config.hpp>