15 lines
360 B
Text
15 lines
360 B
Text
import Lean.Data.PersistentArray
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def check [BEq α] (as : List α) : Bool :=
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as.toPArray'.foldr (.::.) [] == as
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def tst1 : IO Unit := do
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assert! check [1, 2, 3]
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assert! check ([] : List Nat)
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assert! check (List.iota 17)
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assert! check (List.iota 533)
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assert! check (List.iota 1000)
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assert! check (List.iota 2600)
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IO.println "done"
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#eval tst1
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