Create functional-programming.md

Author: C-Stevens

doc/functional-programming.md

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+[<-- Return to index](../README.md)
+# Functional Programming
+
+### Does the language support functional programming?
+#### PHP
+[Yes](http://www.phptherightway.com/pages/Functional-Programming.html), because PHP allows the passing of function references. Accordingly, PHP has iterative abilities and factory/generator classes can be implemented.
+#### Python
+[Yes](https://docs.python.org/3.6/howto/functional.html), Python offers several features that allow for functional programming. Namely, [iterators](https://docs.python.org/3.6/glossary.html#term-iterator) and [generators](https://docs.python.org/3.6/glossary.html#term-generator).