set_value.h

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#pragma once
 
#include "di/function/tag_invoke.h"
#include "di/util/forward.h"
 
namespace di::vocab {
constexpr inline struct SetValueFunction {
    template<typename T, typename... Args>
    constexpr auto operator()(T& value, Args&&... args) const
        -> di::meta::TagInvokeResult<SetValueFunction, T&, Args...> {
        return di::function::tag_invoke(*this, value, di::util::forward<Args>(args)...);
    }
    constexpr auto operator()(T& value, Args&&... args) const {…}
} set_value {};
constexpr inline struct SetValueFunction {…};
}