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fix bug in CCOpt.filter (close #100)

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Simon Cruanes 2017-03-03 14:15:11 +01:00
parent 5713183a3a
commit 6df16975ca
1 changed files with 7 additions and 1 deletions
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8
src/core/CCOpt.ml
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@ -67,7 +67,13 @@ let map2 f o1 o2 = match o1, o2 with
let filter p = function
| Some x as o when p x -> o
| o -> o
| _ -> None
(*$=
None (filter ((=) 0) (Some 1))
(Some 0) (filter ((=) 0) (Some 0))
None (filter (fun _ -> true) None)
*)
let if_ p x = if p x then Some x else None