F# tips weekly #2: Single case pattern match
Every F# programmer is likely familiar with pattern matching using the match keyword, as illustrated below: match x with | Some 0 -> "Zero" | Some n when n > 0 -> "Positive" | Some n when n < 0 -> "Negative" | None -> "Unknown" However, a less well-...
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David Neale
type MultipleOptions = | Thingys of string * int | Wotsits of int
let multiInputMultiply (MultipleOptions.Thingys (_, v) | MultipleOptions.Wotsits v) = v * 42
let r = multiInputMultiply (Thingys ("hey!", 88)) let s = multiInputMultiply (Wotsits 44)