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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#pragma once
namespace td {
template <class T, T empty_val = T()>
class MovableValue {
public:
MovableValue() = default;
MovableValue(T val) : val_(val) {
}
MovableValue(MovableValue &&other) : val_(other.val_) {
other.clear();
}
MovableValue &operator=(MovableValue &&other) {
val_ = other.val_;
other.clear();
return *this;
}
MovableValue(const MovableValue &) = delete;
MovableValue &operator=(const MovableValue &) = delete;
~MovableValue() = default;
void clear() {
val_ = empty_val;
}
const T &get() const {
return val_;
}
private:
T val_ = empty_val;
};
} // namespace td
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