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

Change-Id: I9636a41ad44b4218293833fd3e9456d9b07c731b
This commit is contained in:
Vincent Ambo 2020-07-15 08:20:18 +01:00
commit 1213b086a1
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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/vector.hpp>
int main()
{
const auto v0 = immer::vector<int>{};
const auto v1 = v0.push_back(13);
assert((v0 == immer::vector<int>{}));
assert((v1 == immer::vector<int>{13}));
const auto v2 = v1.set(0, 42);
assert(v1[0] == 13);
assert(v2[0] == 42);
}
// include:intro/end