25 lines
669 B
C++
25 lines
669 B
C++
//
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// immer: immutable data structures for C++
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// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente
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//
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// This software is distributed under the Boost Software License, Version 1.0.
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// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt
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//
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#include <immer/box.hpp>
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#include <cassert>
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#include <string>
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int main()
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{
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{
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// include:update/start
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auto v1 = immer::box<std::string>{"hello"};
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auto v2 = v1.update([&](auto l) { return l + ", world!"; });
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assert((v1 == immer::box<std::string>{"hello"}));
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assert((v2 == immer::box<std::string>{"hello, world!"}));
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// include:update/end
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}
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}
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