Apologies for the syntax/type errors in my last post! :-)
Brian Hulley wrote:
type RenderCallback :: IO ()
type KeypressCallback :: IO ()
type RenderCallback = IO ()
type KeypressCallback = Int -> IO ()
keypress :: IO ()
keypress = drawPrimitive -- not allowed at this point!!!
keypress :: KeypressCallback
keypress c = drawPrimitive -- not allowed at this point!!
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