* [[!wikipedia Functional programming]]
* [[!wikipedia Purely functional]]
* [[!wikipedia Referential transparency (computer science)]]
+* [[!wikipedia Side effect (computer science) desc="Side effects"]]
* [[!wikipedia Imperative programming]]
## General issues about variables and scope in programming languages ##
## Side-effects / mutation ##
+* [[!wikipedia Referential transparency (computer science)]]
* [[!wikipedia Side effect (computer science) desc="Side effects"]]
+* [[!wikipedia Imperative programming]]
* [[!wikipedia Reference (computer science) desc="References"]]
* [[!wikipedia Pointer (computing) desc="Pointers"]]
* [Pointers in OCaml](http://caml.inria.fr/resources/doc/guides/pointers.html)