12 lines
248 B
Text
12 lines
248 B
Text
import Bootstrap
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set_option linter.unusedVariables true
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open Std
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def boo : Id (HashSet Nat) := do
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let mut vs : HashSet Nat := HashSet.empty
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for i in List.range 10 do
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/- unused variable `vs` -/
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(_, vs) := (i, vs.insert i)
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return vs
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