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Diffstat (limited to '')
-rw-r--r-- | third_party/immer/example/vector/move.cpp | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/third_party/immer/example/vector/move.cpp b/third_party/immer/example/vector/move.cpp new file mode 100644 index 000000000000..7eb815b62a6e --- /dev/null +++ b/third_party/immer/example/vector/move.cpp @@ -0,0 +1,35 @@ +// +// immer: immutable data structures for C++ +// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente +// +// This software is distributed under the Boost Software License, Version 1.0. +// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt +// + +#include <cassert> +#include <immer/vector.hpp> + +// include:move-bad/start +immer::vector<int> do_stuff(const immer::vector<int> v) +{ + return std::move(v).push_back(42); +} +// include:move-bad/end + +// include:move-good/start +immer::vector<int> do_stuff_better(immer::vector<int> v) +{ + return std::move(v).push_back(42); +} +// include:move-good/end + +int main() +{ + auto v = immer::vector<int>{}; + auto v1 = do_stuff(v); + auto v2 = do_stuff_better(v); + assert(v1.size() == 1); + assert(v2.size() == 1); + assert(v1[0] == 42); + assert(v2[0] == 42); +} |