79 lines
1.5 KiB
C++
Executable File
79 lines
1.5 KiB
C++
Executable File
#include <boost/config.hpp>
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#if defined(BOOST_MSVC)
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#pragma warning(disable: 4786) // identifier truncated in debug info
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#pragma warning(disable: 4710) // function not inlined
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#pragma warning(disable: 4711) // function selected for automatic inline expansion
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#pragma warning(disable: 4514) // unreferenced inline removed
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#endif
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//
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// bind_as_compose.cpp - function composition using bind.hpp
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//
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// Version 1.00.0001 (2001-08-30)
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//
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// Copyright (c) 2001 Peter Dimov and Multi Media Ltd.
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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#include <boost/bind/bind.hpp>
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#include <iostream>
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#include <string>
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using namespace boost::placeholders;
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std::string f(std::string const & x)
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{
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return "f(" + x + ")";
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}
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std::string g(std::string const & x)
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{
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return "g(" + x + ")";
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}
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std::string h(std::string const & x, std::string const & y)
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{
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return "h(" + x + ", " + y + ")";
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}
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std::string k()
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{
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return "k()";
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}
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template<class F> void test(F f)
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{
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std::cout << f("x", "y") << '\n';
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}
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int main()
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{
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using namespace boost;
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// compose_f_gx
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test( bind(f, bind(g, _1)) );
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// compose_f_hxy
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test( bind(f, bind(h, _1, _2)) );
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// compose_h_fx_gx
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test( bind(h, bind(f, _1), bind(g, _1)) );
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// compose_h_fx_gy
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test( bind(h, bind(f, _1), bind(g, _2)) );
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// compose_f_k
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test( bind(f, bind(k)) );
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return 0;
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}
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