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13 lines
332 B
Plaintext
13 lines
332 B
Plaintext
import Lean
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-- import TestGame.MyNat
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open Lean Elab Tactic
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elab "swap" : tactic => do
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match ← getGoals with
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| g₁::g₂::t => setGoals (g₂::g₁::t)
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| _ => pure ()
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-- macro "induction_on" n:ident : tactic =>
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-- `(tactic| refine myInduction $n ?base ?inductive_step; swap; clear $n; intro $n $(mkIdent `ind_hyp); swap)
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