lean2/tests/lean/run/tactic25.lean
Leonardo de Moura e379034b95 feat(library/tactic): improve 'assumption' tactic
- It uses the unifier in "conservative" mode
- It only affects the current goal

closes #570
2015-05-02 17:33:54 -07:00

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import logic
open tactic
definition my_tac1 := apply @eq.refl
definition my_tac2 := repeat (or_else (apply and.intro) assumption)
tactic_hint my_tac1
tactic_hint my_tac2
theorem T1 {A : Type.{2}} (a : A) : a = a
theorem T2 {a b c : Prop} (Ha : a) (Hb : b) (Hc : c) : a ∧ b ∧ c
notation `(` h `|` r:(foldl `|` (e r, tactic.or_else r e) h) `)` := r
infixl `;`:15 := tactic.and_then
definition my_tac3 := fixpoint (λ f, (apply or.intro_left; f |
apply or.intro_right; f |
assumption))
tactic_hint my_tac3
theorem T3 {a b c : Prop} (Hb : b) : a b c