lean2/tests/lean/run/app_builder_issue1.lean

constant f {A : Type} (a : A) {B : Type} (b : B) : nat

example (a b c d : nat) : a = c → b = d → f a b = f c d :=
by simp
feat(library/type_context): improve type_context get_level_core, add virtual method for checking types whenever a metavariable is assigned We add an example where app_builder fails without these new features. That is, app_builder fails to solve the unification problem. 2016-01-04 01:58:27 +00:00			`constant f {A : Type} (a : A) {B : Type} (b : B) : nat`

			`example (a b c d : nat) : a = c → b = d → f a b = f c d :=`
			`by simp`