List class

I have an assignment that has me using a list class. I was under the impression that the list class was something that was included in either a header file or somewhere that was prewritten somewhere. Has anyone heard of a list class that has these functions in it

retrieve()
getlength()
insert()
isempty()

any of this look familiar to anyone? Or was this something that I have to learn to create?

If it's your assignment to create the class, then it's something you have to do yourself.

The STL list class is in <list>
But it doesn't have functions with those names.

Perhaps those functions were written as part of a previous assignment that you missed?