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merge(3p/immer): Subtree merge at 'ad3e3556d' as 'third_party/immer'

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Change-Id: I9636a41ad44b4218293833fd3e9456d9b07c731b
This commit is contained in:
Vincent Ambo 2020-07-15 08:20:18 +01:00
commit 1213b086a1
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third_party/immer/example/set/intro.cpp vendored Normal file
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//
// 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:intro/start
#include <immer/set.hpp>
int main()
{
const auto v0 = immer::set<int>{};
const auto v1 = v0.insert(42);
assert(v0.count(42) == 0);
assert(v1.count(42) == 1);
const auto v2 = v1.erase(42);
assert(v1.count(42) == 1);
assert(v2.count(42) == 0);
}
// include:intro/end