> Here the situation is quite simple. Because a is a template the > vector<int>::size() method is probably included in the header files. This > means that the compiler can examine or inline the code of the method. If the > compiler additionally determines that in /*do something*/ the size is not i want to know whether Gcc can determines the size is changed or not... i did some experiment, and the result is not bad. anyone can give me some theoritical hints? > changed, then the optimization is quite straigthforward > > Christoph
