1 operator隐式类型转换
1.1 std::ref源码中reference_wrapper隐式类型转换
在std::ref的实现中有如下一段代码:
template<typename>
class reference_wrapper
: public _Reference_wrapper_base<typename>::type>
{
_Tp* _M_data;
public:
typedef _Tp type;
reference_wrapper(_Tp& __indata) noexcept
: _M_data(std: