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Search options not deleted user 63162

Use this tag for programs where "functional" style is important - likely making use of function composition and without side-effects. NOT simply because your code contains functions!

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Future in f# is this an unavoidable use of a mutable variable?

I have this type: type Future<'a> () = let mutable _value: 'a option = None member x.Resolve value = if _value.IsSome then failwith "can only resolve once" _value <- Some val …
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