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18 lines
539 B
OCaml
18 lines
539 B
OCaml
10 years ago
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(*
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* Example of early return implementation taken from
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* http://ocaml.janestreet.com/?q=node/91
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*)
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let with_return (type t) (f : _ -> t) =
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let module M =
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struct exception Return of t end
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in
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let return = { return = (fun x -> raise (M.Return x)); } in
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try f return with M.Return x -> x
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(* Function that uses the 'early return' functionality provided by `with_return` *)
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let sum_until_first_negative list =
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with_return (fun r ->
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List.fold list ~init:0 ~f:(fun acc x ->
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if x >= 0 then acc + x else r.return acc))
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