74ffa1e413
This PR removes `Lean.Data.HashMap` and `HashSet`. These have been deprecated for 6 months, replaced by `Std.Data.HashMap` and `HashSet`.
12 lines
299 B
Text
12 lines
299 B
Text
import Std.Data.HashMap
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def test (m : Std.HashMap Nat Nat) : IO (Nat × Nat) := do
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let start := 1
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let mut i := start
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let mut count := 0
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while i != 0 do
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i := m[i]?.getD (panic! "key is not in the map")
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count := count + 1
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return (i, count)
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#eval test (.ofList [(1,3),(3,2),(2,0)])
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