Your pattern match just assigns typ to intT since the latter isn't a literal or data type constructor etc. Just use "if typ = intT then ..." instead, or if you need to use pattern matching, use a when guard: "| _ when typ = intT -> ...".
Thanks Stephan!
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What am I doing wrong? I'm trying to test for a specific type, but I'm matching ALL types in the first match case.
/// VERSION: ONLY Parsing Int32. let parsePart (text:string) (typ:System.Type) :obj = let intT = typeof<System.Int32> match typ with | intT -> box(int text) // TODO: WARNING: This rule will never be matched. (My test above isn't doing what I expected.) | _ -> failwith ("parsePart - not implemented: " + typ.ToString())