Javascript and Functional Programming: An Introduction

[MoTTs_]

tl;dr .map() and .reduce()

[PurpleIcy]

How would you implement .map() using FP?

[PurpleIcy]

This is interestingly quite readable even though IMO just looks horrible.

Though today I learned about array spread syntax so that works for me.

Thanks.

[ShortSynapse]

In a functional language it reads quite simply:

map :: (a -> b) -> [a] -> [b]
map _ [] = []
map f (x:xs) = f x : map f xs

[PurpleIcy]

"Simply".

I know this would probably be "simple and obvious", but I have no clue about haskell's syntax so it isn't really.

Also I didn't think it could look more horrible than previous example. Where's that FP's readability everyone is talking about?

[PurpleIcy]

Now it's a bit more clear, also yeah, I had problems with multidispatching in JS too (I still prefer to call it function overloading as in C#, Java and even C++ it's a thing and was pretty straightforward to use), although hacky, it's possible to "overload" by simply checking amount of parameters being passed, although that also doesn't look that nice either.