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#pragma once
#include <functional>
template <typename NotAFunc>
struct is_func : public std::false_type // NOLINT(readability-identifier-naming)
{
};
template <typename Return, typename... Args>
struct is_func<std::function<Return(Args...)>> : public std::true_type
{
};
template <typename PossiblyFunc>
inline constexpr bool is_func_v = is_func<PossiblyFunc>::value;
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