In instantiating the ImmutableString, the function pointers to the get and length methods actually refer to the String.get and String.length method, by going through the base variable which is an internally stored String object. The use of a function pointer can achieve inheritance of a method from a superclass.
Most women will start to show at some point between weeks 12 and 24 of pregnancy, with most reporting that they began to show during the first half of their second trimester, between 12 and 18 weeks.
Some women begin to experience pregnancy symptoms as soon as they conceive while the others take few weeks to develop pregnancy symptoms. Experts are of view that pregnancy symptoms begin in 5th to 6th week of fertilisation. Even though some women say that they noticed changes in their body within a week of unprotected sex. Others miss the signs for a 3 or 4 weeks. When the egg is fertilised, it becomes attached to the uterus and starts to produce hCG.