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author | Anas Nashif <anas.nashif@intel.com> | 2013-08-26 08:15:55 -0400 |
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committer | Anas Nashif <anas.nashif@intel.com> | 2013-08-26 08:15:55 -0400 |
commit | bb4dd8289b351fae6b55e303f189127a394a1edd (patch) | |
tree | 77c9c35a31b1459dd7988c2448e797d142530c41 /libs/scope_exit/example/world_cxx11_lambda.cpp | |
parent | 1a78a62555be32868418fe52f8e330c9d0f95d5a (diff) | |
download | boost-bb4dd8289b351fae6b55e303f189127a394a1edd.tar.gz boost-bb4dd8289b351fae6b55e303f189127a394a1edd.tar.bz2 boost-bb4dd8289b351fae6b55e303f189127a394a1edd.zip |
Imported Upstream version 1.51.0upstream/1.51.0
Diffstat (limited to 'libs/scope_exit/example/world_cxx11_lambda.cpp')
-rw-r--r-- | libs/scope_exit/example/world_cxx11_lambda.cpp | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/libs/scope_exit/example/world_cxx11_lambda.cpp b/libs/scope_exit/example/world_cxx11_lambda.cpp new file mode 100644 index 0000000000..c3f659ab9f --- /dev/null +++ b/libs/scope_exit/example/world_cxx11_lambda.cpp @@ -0,0 +1,57 @@ + +// Copyright (C) 2006-2009, 2012 Alexander Nasonov +// Copyright (C) 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/scope_exit + +#include <boost/config.hpp> +#ifdef BOOST_NO_LAMBDAS +# error "lambda functions required" +#else + +#include <boost/detail/lightweight_test.hpp> +#include <vector> + +struct person {}; + +struct world { + void add_person(person const& a_person); + std::vector<person> persons_; +}; + +//[world_cxx11_lambda +#include <functional> + +struct scope_exit { + scope_exit(std::function<void (void)> f) : f_(f) {} + ~scope_exit(void) { f_(); } +private: + std::function<void (void)> f_; +}; + +void world::add_person(person const& a_person) { + bool commit = false; + + persons_.push_back(a_person); + scope_exit on_exit1([&commit, this](void) { // Use C++11 lambda. + if(!commit) persons_.pop_back(); // `persons_` via captured `this`. + }); + + // ... + + commit = true; +} +//] + +int main(void) { + world w; + person p; + w.add_person(p); + BOOST_TEST(w.persons_.size() == 1); + return boost::report_errors(); +} + +#endif // LAMBDAS + |