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[ perf ] Do not split tree too early
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@ -441,10 +441,9 @@ export
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split : Nat -> FingerTree (Elem a) -> (FingerTree (Elem a), FingerTree (Elem a))
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split _ Empty = (Empty, Empty)
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split i xs =
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let MkSplit l x r = splitTree i xs
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in if size xs > i
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then (l, x `consTree` r)
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else (xs, Empty)
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if size xs > i
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then let MkSplit l x r = splitTree i xs in (l, x `consTree` r)
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else (xs, Empty)
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-- Concatenation
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