[guilherme-puida]

Sure, but `forEach` is not even in the same category as map/filter/reduce. `forEach` is in no way functional.

[nullcipher]

I mean just search for "is forEach functional programming"

[guilherme-puida]

forEach is just an alternate syntax for a for..in loop, that instead of being a block it takes a closure. It's not functional, since it's only used for side-effects.