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Edit: /usr/include/boost/spirit/home/classic/core/composite/impl/optional.ipp (1071B)
/*============================================================================= Copyright (c) 1998-2003 Joel de Guzman Copyright (c) 2001 Daniel Nuffer Copyright (c) 2002 Hartmut Kaiser http://spirit.sourceforge.net/ Use, modification and distribution is subject to 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) =============================================================================*/ #if !defined(BOOST_SPIRIT_OPTIONAL_IPP) #define BOOST_SPIRIT_OPTIONAL_IPP namespace boost { namespace spirit { BOOST_SPIRIT_CLASSIC_NAMESPACE_BEGIN /////////////////////////////////////////////////////////////////////////// // // optional class implementation // /////////////////////////////////////////////////////////////////////////// template optional operator!(parser const& a) { return optional(a.derived()); } BOOST_SPIRIT_CLASSIC_NAMESPACE_END }} // namespace boost::spirit #endif