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joshcough/box.fs

Created November 9, 2011 19:23
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box
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box.fs
> let f<'a>(a:'a) = match box a with | :? string as s -> s | _ -> "hi";;
val f : 'a -> string
> f(1);;
val it : string = "hi"
> f("hello")
;;
val it : string = "hello"
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