[plt-scheme] instanceof equivalent in Typed Scheme?

It is impossible to check whether a function is of type (Integer ->  
Integer) or (X -> Void). -- Matthias



On Jun 9, 2009, at 2:59 PM, Todd O'Bryan wrote:

> Is there a way to check whether something is of a particular type?
>
> I know you can define a type-predicate with:
>
> (: Type? : Any -> Boolean : Type)
>
> but I assume if you define that incorrectly bad things will happen.
>
> Todd
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