电脑发展史上有哪些伟大的思想和技术？ 第1页

                Application            |            |  OS API          Runtime Library            |              | System Call           OS            |            | Hardware Specification            Hardware     

       template<typename R, typename T> bool exist(const R& range, const T& value) { for (const auto& x : range)   if (x == value)        return true;   return false; } vector<string> vec {}; exist(vec, 47); // BUG!      

       template<typename R, typename T>          requires Equality_comparable<T, Value_type<R>>() bool exist(const R& range, const T& value) {   for (const auto& x : range)    if (x == value)        return true;    return false; } vector<string> vec {}; exist(vec, 47); // BUG!      

       class GirlFriend {   public:   bool hasLongHair() const {//...}   private:   std::string name_;   unsigned age_;   //... };