Created
December 2, 2011 15:45
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Id&Equals Active patterns
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| let (|Equals|_|) x y = | |
| if x = y then Some () else None | |
| let (|Id|_|) f x = | |
| if f x then Some () else None | |
| let a = 3;; | |
| match 3 with | |
| | Equals a -> "Yes" | |
| | _ -> "No";; | |
| match seq [1;2;3] with | |
| | Id Seq.isEmpty -> "Empty" | |
| | _ -> "HasSome" |
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