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// Copyright (C) 2009-2012 Lorenzo Caminiti
// Distributed under the Boost Software License, Version 1.0
// (see accompanying file LICENSE_1_0.txt or a copy at
// http://www.boost.org/LICENSE_1_0.txt)
// Home at http://www.boost.org/libs/local_function
#include <boost/local_function.hpp>
#include <boost/typeof/typeof.hpp>
#include BOOST_TYPEOF_INCREMENT_REGISTRATION_GROUP()
#include <boost/detail/lightweight_test.hpp>
#include <vector>
#include <algorithm>
struct v;
BOOST_TYPEOF_REGISTER_TYPE(v) // Register before `bind this_` below.
struct v {
std::vector<int> nums;
v(const std::vector<int>& numbers): nums(numbers) {}
void change_sign_all(const std::vector<int>& indices) {
void BOOST_LOCAL_FUNCTION(bind this_, int i) { // Bind object `this`.
this_->nums.at(i) = -this_->nums.at(i);
} BOOST_LOCAL_FUNCTION_NAME(complement)
std::for_each(indices.begin(), indices.end(), complement);
}
};
int main(void) {
std::vector<int> n(3);
n[0] = 1; n[1] = 2; n[2] = 3;
std::vector<int> i(2);
i[0] = 0; i[1] = 2; // Will change n[0] and n[2] but not n[1].
v vn(n);
vn.change_sign_all(i);
BOOST_TEST(vn.nums.at(0) == -1);
BOOST_TEST(vn.nums.at(1) == 2);
BOOST_TEST(vn.nums.at(2) == -3);
return boost::report_errors();
}
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