maybe.h 文件参考

浏览源代码.

类
class	Nothing
class	Maybe< T >
	Holder that represents an object that can be either present or absent. Quite simllar to std::optional introduced in C++14, but provides a way to pass the reason of absence (e.g. "incorrect parameter"). 更多...

函数
template<typename T >
static Maybe< T >	Just (const T &value)

变量
static const char *	NO_REASON_FOR_ABSENCE = "AVAILABLE"