1
2// Copyright (C) 2006-2009, 2012 Alexander Nasonov
3// Copyright (C) 2012 Lorenzo Caminiti
4// Distributed under the Boost Software License, Version 1.0
5// (see accompanying file LICENSE_1_0.txt or a copy at
6// http://www.boost.org/LICENSE_1_0.txt)
7// Home at http://www.boost.org/libs/scope_exit
8
9#include <boost/scope_exit.hpp>
10#include <boost/typeof/typeof.hpp>
11#include <boost/typeof/std/vector.hpp>
12#include BOOST_TYPEOF_INCREMENT_REGISTRATION_GROUP()
13#include <boost/detail/lightweight_test.hpp>
14#include <boost/config.hpp>
15#include <vector>
16
17struct person {};
18BOOST_TYPEOF_REGISTER_TYPE(person)
19
20struct world {
21 void add_person(person const& a_person);
22 size_t population(void) const { return persons_.size(); }
23
24private:
25 std::vector<person> persons_;
26};
27BOOST_TYPEOF_REGISTER_TYPE(world)
28
29void world::add_person(person const& a_person) {
30 bool commit = false;
31
32 persons_.push_back(x: a_person);
33 BOOST_SCOPE_EXIT( (&commit) (this_) ) {
34 if(!commit) this_->persons_.pop_back();
35 } BOOST_SCOPE_EXIT_END
36
37 // ...
38
39 commit = true;
40}
41
42int main(void) {
43 world w;
44 person p;
45 w.add_person(a_person: p);
46 BOOST_TEST(w.population() == 1);
47 return boost::report_errors();
48}
49
50

source code of boost/libs/scope_exit/test/world_this_seq.cpp