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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <utility>
namespace vespalib {
// Functor which returns its argument unchanged.
// Functionally identical to C++20's std::identity
// TODO remove and replace with std::identity once it is available.
struct Identity {
template <typename T>
constexpr T&& operator()(T&& v) const noexcept {
return std::forward<T>(v);
}
};
}
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