lean4-htt/tests/lean/typeMismatch.lean
2020-10-25 09:16:38 -07:00

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Text

import Lean
-- Test type mismatch error messages for "liftable" methods
def test (x : Nat) : IO Nat :=
IO.println ""
open Lean
def test (x : Expr) : MetaM Unit :=
Meta.isDefEq x x