Is there a visual modeling language or style for the functional programming paradigm?

Question

UML is a standard aimed at the modeling of software which will be written in OO languages, and goes hand in hand with Java. Still, could it possibly be used to model softwar

Answer 1

You can a data flow process network model as described in Realtime Signal Processing: Dataflow, Visual, and Functional Programming by Hideki John Reekie

For example for code like (Haskell):

fact n | n == 0    = 1
       | otherwise = n * fact (n - 1)

The visual representation would be: