One thing I have wondered about is the number of multi-arity functions that individually specify 1, 2, 3, 4, 5 argument cases in 3rd-party library code. Is it

One thing I have wondered about is the number of multi-arity functions that individually specify 1, 2, 3, 4, 5 argument cases in 3rd-party library code. Is it a result of people thinking that’s idiomatic, or is ([a b c d]) performant enough to matter in library code instead of using ([a b & more]) ? I hope it’s the former.