I'll speak on behlaf of java and C++. Don't have a choice in ways you can do things? In java, you have interfaces to implement if you want to look at in that level. So you have LinkList, ArrayList, DoubleLinkList (haven't confirmed that one) etc...

You also jave things like JAXP, JAXM and what not, plugable interfaces for doing XML. Don't want to use the plugged version, there are others that work as well, i.e. xmlpull(.org).

C++? You have the stl or your own home brewed ways. You have QT as well.


-- "So far my experience has been that most people who go for certification have broad but not deep knowledge in the field and the flavor of the knowledge is academic. But every once in a while one finds a gem of a person who learns all the time and uses certification to prove it." -- on Orkut