exception OutOfRange
infix <<
val << = fn : int * int -> int
infix ~~
val ~~ = fn : 'a list * 'a list -> 'a list
val multiples = fn : int * int -> int list
val sumTo = fn : int -> real
val countNegative = fn : int list -> int
val allPairs = fn : int * int -> (int * int) list
val timesTwoPlusThree = fn : int -> int
val positive = fn : int -> bool
val evens = fn : int -> int list
val roots = fn : int list -> int list
val acronym = fn : string list -> string
val reverseStrings = fn : string list -> string list