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camlspotter/gist:4d963db5b9af8e7ddfd5

Created January 22, 2015 13:43
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gistfile1.txt
type t =
| Pair of t * t
| Number of int
| Function of string (* or what? *)
let rec empty = Pair (empty, empty) (* make a looped value *)
let is_empty t = match t with
| Pair (t1, t2) -> t == t1 && t == t2 (* using pointer equality *)
| _ -> false
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