For anyone reading "functor" and moving on, this (http://www.catonmat.net/blog/on-functors/ http://www.catonmat.net/blog/on-functors/) is a great post discussin

For anyone reading "functor" and moving on, this (http://www.catonmat.net/blog/on-functors/ http://www.catonmat.net/blog/on-functors/) is a great post discussing how the term is used in a variety of languages.