e379034b95
- It uses the unifier in "conservative" mode - It only affects the current goal closes #570
12 lines
284 B
Text
12 lines
284 B
Text
example (a b c : Prop) : a ∧ b ↔ b ∧ a :=
|
|
begin
|
|
apply iff.intro,
|
|
{intro H,
|
|
match H with
|
|
| and.intro H₁ H₂ := by apply and.intro; repeat assumption
|
|
end},
|
|
{intro H,
|
|
match H with
|
|
| and.intro H₁ H₂ := by apply and.intro; repeat assumption
|
|
end},
|
|
end
|