When dealing with compose in functional programming does anyone know the meaning of the terms I listed in Description?

Question

fans, Val, prev, fn

Answer 1

These are varibales used as notiations
fn and fns are functions
So its stating the argument(s) of compose(…fns) should be functions

I assume val is value, may also be referred to as args (arguments)

Then prev usually refers to previous value. Again not much context in your question but in compose sometimes reduce() is used

Hope this helps!

Answer 2

Ok,going by what your explanation it means they are all functions. My point exactly is which takes (..fns),which takes Val ,which takes prev ..My question is which is at the far right and which is at the far left?. considering the way compose works.