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Diffstat (limited to '')
-rw-r--r-- | third_party/immer/example/vector/vector.cpp | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/third_party/immer/example/vector/vector.cpp b/third_party/immer/example/vector/vector.cpp new file mode 100644 index 000000000000..c59c2d1d170b --- /dev/null +++ b/third_party/immer/example/vector/vector.cpp @@ -0,0 +1,53 @@ +// +// 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> + +int main() +{ + { + // include:push-back/start + auto v1 = immer::vector<int>{1}; + auto v2 = v1.push_back(8); + + assert((v1 == immer::vector<int>{1})); + assert((v2 == immer::vector<int>{1, 8})); + // include:push-back/end + } + + { + // include:set/start + auto v1 = immer::vector<int>{1, 2, 3}; + auto v2 = v1.set(0, 5); + + assert((v1 == immer::vector<int>{1, 2, 3})); + assert((v2 == immer::vector<int>{5, 2, 3})); + // include:set/end + } + + { + // include:update/start + auto v1 = immer::vector<int>{1, 2, 3, 4}; + auto v2 = v1.update(2, [&](auto l) { return ++l; }); + + assert((v1 == immer::vector<int>{1, 2, 3, 4})); + assert((v2 == immer::vector<int>{1, 2, 4, 4})); + // include:update/end + } + + { + // include:take/start + auto v1 = immer::vector<int>{1, 2, 3, 4, 5, 6}; + auto v2 = v1.take(3); + + assert((v1 == immer::vector<int>{1, 2, 3, 4, 5, 6})); + assert((v2 == immer::vector<int>{1, 2, 3})); + // include:take/end + } +} |