Factory Pattern. 1  Factory pattern is a creational design pattern. 2  Idea of the factory patterns is to localize the object creation code. 3  This prevents disturbing the entire system for a new type introduction.
The average maternity leave in the U.S. is about 10 weeks, but about half of new moms took at least five weeks, with about a quarter taking nine weeks or more, figures showed.
The average length of a pregnancy is 40 weeks, or 280 days, from the first day of the last normal menstrual period. Calculating the due date, or expected date of delivery, for a pregnancy is quite simple, then, if you know that date.