specifiers.hpp

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// Copyright (c) 2023-2025 Jakub Musiał
// This file is part of the CPP-AP project (https://github.com/SpectraL519/cpp-ap).
// Licensed under the MIT License. See the LICENSE file in the project root for full license information.
 
#pragma once
 
#include "ap/detail/concepts.hpp"
 
#include <functional>
 
namespace ap::action_type {
 
struct observe {
    template <ap::detail::c_argument_value_type T>
    using type = std::function<void(const T&)>;
};
 
struct transform {
    template <ap::detail::c_argument_value_type T>
    using type = std::function<T(const T&)>;
};
 
struct modify {
    template <ap::detail::c_argument_value_type T>
    using type = std::function<void(T&)>;
};
 
struct on_flag {
    using type = std::function<void()>;
};
 
} // namespace ap::action_type