time_base

class time_base {
public:
    enum dateorder {no_order, dmy, mdy, ymd, ydm};
    };

The class serves as a base class for facets of template class time_get. It defines just the enumerated type dateorder and several constants of this type. Each of the constants characterizes a different way to order the components of a date. The constants are:

• no_order specifies no particular order.
• dmy specifies the order day, month, then year, as in 2 December 1979.
• mdy specifies the order month, day, then year, as in December 2, 1979.
• ymd specifies the order year, month, then day, as in 1979/12/2.
• ydm specifies the order year, day, then month, as in 1979: 2 Dec.