Forward declares the Maybe datatype. More...

#include <boost/mpl11/detail/config.hpp>
#include <boost/mpl11/fwd/bool.hpp>
#include <boost/mpl11/fwd/functional.hpp>

Classes
struct	boost::mpl11::just< x >
	Creates an optional value containing `x`. More...

struct	boost::mpl11::nothing
	Creates an empty optional value. More...

struct	boost::mpl11::maybe< def, f, m >
	Applies a metafunction class to a `Maybe`, with a fallback result. More...

struct	boost::mpl11::is_just< m >
	Returns whether a `Maybe` is a `just`. More...

struct	boost::mpl11::is_nothing< m >
	Returns whether a `Maybe` is a `nothing`. More...

struct	boost::mpl11::from_maybe< def, m >
	If `m` is nothing, returns `def`. More...

struct	boost::mpl11::from_just< m >
	Extracts the value out of a `just`, and triggers a hard compile-time error if the argument is `nothing`. More...

Detailed Description

Forward declares the Maybe datatype.

Copyright: Louis Dionne 2014 Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE.md or copy at http://www.boost.org/LICENSE_1_0.txt)

Classes