lean2/tests/lean/run/tactic10.lean

import logic
using tactic

theorem tst (a b : Prop) (H : a ↔ b) : b ↔ a
:= by apply iff_intro;
      apply (assume Hb, iff_elim_right H Hb);
      apply (assume Ha, iff_elim_left H Ha)

check tst
chore(*): minimize dependencies on tests Signed-off-by: Leonardo de Moura <leonardo@microsoft.com> 2014-08-24 19:58:48 -07:00			`import logic`
feat(library/tactic): new apply tactic Signed-off-by: Leonardo de Moura <leonardo@microsoft.com> 2014-07-02 13:14:50 -07:00			`using tactic`
feat(frontends/lean): add exact_apply Signed-off-by: Leonardo de Moura <leonardo@microsoft.com> 2014-06-30 00:51:11 -07:00
refactor(*): rename Bool to Prop Signed-off-by: Leonardo de Moura <leonardo@microsoft.com> 2014-07-22 09:43:18 -07:00			`theorem tst (a b : Prop) (H : a ↔ b) : b ↔ a`
feat(library/tactic): new apply tactic Signed-off-by: Leonardo de Moura <leonardo@microsoft.com> 2014-07-02 13:14:50 -07:00			`:= by apply iff_intro;`
fix(tests/lean): adjust tests to new library structure Signed-off-by: Leonardo de Moura <leonardo@microsoft.com> 2014-08-01 09:37:23 -07:00			`apply (assume Hb, iff_elim_right H Hb);`
			`apply (assume Ha, iff_elim_left H Ha)`
feat(library/tactic): new apply tactic Signed-off-by: Leonardo de Moura <leonardo@microsoft.com> 2014-07-02 13:14:50 -07:00
			`check tst`