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 <vector>
15
16struct person {};
17BOOST_TYPEOF_REGISTER_TYPE(person)
18
19template<typename Person>
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_TEMPLATE(world, 1)
28
29template<typename Person>
30void world<Person>::add_person(Person const& a_person) {
31 bool commit = false;
32 persons_.push_back(a_person);
33
34 BOOST_SCOPE_EXIT_TPL( (&commit) (this_) ) {
35 if(!commit) this_->persons_.pop_back();
36 } BOOST_SCOPE_EXIT_END
37
38 // ...
39
40 commit = true;
41}
42
43int main(void) {
44 world<person> w;
45 person p;
46 w.add_person(a_person: p);
47 BOOST_TEST(w.population() == 1);
48 return boost::report_errors();
49}
50
51

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