// Copyright Krzysztof Czainski 2011
// Distributed under the Boost Software License, Version 1.0.
//    (See accompanying file LICENSE_1_0.txt or copy at
//          http://www.boost.org/LICENSE_1_0.txt)
 
/**
 * @file cz/boost/utility/safe_bool.hpp
 * Introduction by Vladimir Batov:
 * An implicit conversion to bool (operator bool() const) is very much
 * idiomatic and is often deployed in constructs like "if (foo)" and "if (!foo)"