Библиотека C/C++ разработчика | cpp, boost, qt

⚡️ Фича дня: if consteval в C++23

Хотите разный код для compile-time и runtime? C++23 добавляет if consteval для условной компиляции!

🔴 До: Сложные трюки

template<typename T>
constexpr T compute() {
    if (std::is_constant_evaluated()) {
        return compile_time_version<T>();
    }
    return runtime_version<T>();
}

🟢 После: Читаемый consteval

template<typename T>
constexpr T compute() {
    if consteval {
        return compile_time_version<T>();
    } else {
        return runtime_version<T>();
    }
}

❗️Практические применения:

• Оптимизированные математические библиотеки
• Compile-time криптография
• Генерация lookup-таблиц

💡Используете метапрограммирование в ваших проектах?

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www.tg-me.com/br/Библиотека C C разработчика | cpp boost qt/com.cppproglib/5782

2.0K viewsedited Jun 11 at 08:28

tg-me.com/cppproglib/5782

Create: 2025-06-11
Last Update: 2025-06-14 10:12:46

template<typename T>
constexpr T compute() {
    if (std::is_constant_evaluated()) {
        return compile_time_version<T>();
    }
    return runtime_version<T>();
}

🟢 После: Читаемый consteval

template<typename T>
constexpr T compute() {
    if consteval {
        return compile_time_version<T>();
    } else {
        return runtime_version<T>();
    }
}

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