I'd assume that's because when no key is pressed the
Input.Key list
is empty thus
reduce
throwing an exception:
"The input sequence was empty".
With
fold
you obviously do not have that problem.
Ah, ofcourse.
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Doc.TextView (Input.Keyboard.KeysPressed |> View.Map (fun ks -> ks |> List.map string |> List.reduce (fun e1 e2 -> e1 + "," + e2)))Great job on ui.next btw ;)