1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
// 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/config.hpp>
#ifdef BOOST_NO_CXX11_VARIADIC_MACROS
# error "variadic macros required"
#else
#include <boost/local_function.hpp>
#include <boost/function.hpp>
#include <boost/detail/lightweight_test.hpp>
boost::function<int (void)> inc(int& value) {
int BOOST_LOCAL_FUNCTION(bind& value) {
return ++value;
} BOOST_LOCAL_FUNCTION_NAME(i)
return i;
}
int main(void) {
int value1 = 0; // Reference valid in scope where closure is used.
boost::function<int (void)> inc1 = inc(value1);
int value2 = 0;
boost::function<int (void)> inc2 = inc(value2);
BOOST_TEST(inc1() == 1);
BOOST_TEST(inc1() == 2);
BOOST_TEST(inc2() == 1);
BOOST_TEST(inc1() == 3);
return boost::report_errors();
}
#endif // VARIADIC_MACROS
|
