lean2/tests/lean/run/tactic17.lean

import logic
open tactic

constant A : Type.{1}
constant f : A → A → A

theorem tst {a b c : A} (H1 : a = b) (H2 : b = c) : f a b = f b c :=
begin
  apply (@congr A A (f a) (f b)),
  apply (congr_arg f),
  repeat assumption
end
chore(*): minimize dependencies on tests Signed-off-by: Leonardo de Moura <leonardo@microsoft.com> 2014-08-25 02:58:48 +00:00			`import logic`
feat(frontends/lean): rename 'using' command to 'open' Signed-off-by: Leonardo de Moura <leonardo@microsoft.com> 2014-09-03 23:00:38 +00:00			`open tactic`
fix(library/unifier): missing case Signed-off-by: Leonardo de Moura <leonardo@microsoft.com> 2014-07-03 17:50:08 +00:00
refactor(frontends/lean): constant/axiom are top-level commands, parameter/variable/hypothesis/conjecture are section/context-level commands Signed-off-by: Leonardo de Moura <leonardo@microsoft.com> 2014-10-02 23:20:52 +00:00			`constant A : Type.{1}`
			`constant f : A → A → A`
fix(library/unifier): missing case Signed-off-by: Leonardo de Moura <leonardo@microsoft.com> 2014-07-03 17:50:08 +00:00
refactor(library/tactic): elaborate expressions nested in tactics with respect to current goal, save postponed constraints (e.g., flex-flex constraints) closes #44, fixes #70 2014-10-15 00:12:57 +00:00			`theorem tst {a b c : A} (H1 : a = b) (H2 : b = c) : f a b = f b c :=`
			`begin`
fix(tests/lean): adjusts tests 2015-05-02 20:01:37 +00:00			`apply (@congr A A (f a) (f b)),`
refactor(library/tactic): elaborate expressions nested in tactics with respect to current goal, save postponed constraints (e.g., flex-flex constraints) closes #44, fixes #70 2014-10-15 00:12:57 +00:00			`apply (congr_arg f),`
feat(library/tactic): improve 'assumption' tactic - It uses the unifier in "conservative" mode - It only affects the current goal closes #570 2015-05-03 00:32:03 +00:00			`repeat assumption`
refactor(library/tactic): elaborate expressions nested in tactics with respect to current goal, save postponed constraints (e.g., flex-flex constraints) closes #44, fixes #70 2014-10-15 00:12:57 +00:00			`end`