function
(apply f & args)
Applies a function to a variable number of arguments. Each element
in args is used as an argument to f, except the last element in
args, which is expected to be an array-like. Each element in this
last argument is then also pushed as an argument to f. For example:
(apply + 1000 (range 10))
sums the first 10 integers and 1000.
(apply * [1 2 3]) # -> 6
(* (splice [1 2 3])) # -> 6
(* ;[1 2 3]) # -> 6
(* 1 2 3) # -> 6