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I’m implementing a state machine in dart, and I’d like to have my state functions return other state functions, but
typedef State State(foo);
Gives me an error:
typedef 'State' illegally refers to itself
Is there any way to do this typedef? Obviously I could wrap it in a class or have it return Function, but I was hoping to do this with typedef.
Sorry, this is not allowed by the spec right now. You could open a feature request at http://dartbug.com/new
Using an object or returning Function, as you mention, would be the best ways to go right now.