74 lines
1.7 KiB
C++
74 lines
1.7 KiB
C++
/*=============================================================================
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Copyright (c) 2001-2007 Joel de Guzman
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#include <iostream>
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#include <algorithm>
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#include <vector>
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#include <boost/phoenix/scope.hpp>
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#include <boost/phoenix/core.hpp>
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#include <boost/phoenix/operator.hpp>
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#include <boost/phoenix/function.hpp>
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namespace lazy_stuff
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{
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using boost::phoenix::function;
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struct for_each_impl
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{
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typedef void result_type;
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template <typename C, typename F>
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void operator()(C& c, F f) const
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{
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std::for_each(c.begin(), c.end(), f);
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}
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};
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function<for_each_impl> const for_each = for_each_impl();
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struct push_back_impl
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{
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typedef void result_type;
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template <typename C, typename T>
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void operator()(C& c, T& x) const
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{
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c.push_back(x);
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}
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};
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function<push_back_impl> const push_back = push_back_impl();
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}
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int
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main()
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{
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{
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using lazy_stuff::for_each;
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using lazy_stuff::push_back;
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using boost::phoenix::lambda;
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using boost::phoenix::arg_names::arg1;
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using boost::phoenix::arg_names::arg2;
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using boost::phoenix::local_names::_a;
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int x = 10;
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std::vector<std::vector<int> > v(10);
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for_each(arg1,
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lambda(_a = arg2)
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[
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push_back(arg1, _a)
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]
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)
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(v, x);
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}
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return 0;
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}
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