lean2/tests/lean/run/mult.lean

structure C [class] :=
(val : nat)

attribute C [multiple_instances]

definition c1 [instance] : C := C.mk 1
definition c2 [instance] : C := C.mk 2

set_option trace.class_instances true

definition f [s : C] : nat := C.val

definition tst1 : f = 1 :=
rfl

definition tst2 : f = 2 :=
rfl
feat(library/class_instance_resolution): add support for attribute [multiple-instances] in the new type class resolution procedure 2015-10-18 19:07:25 +00:00			`structure C [class] :=`
			`(val : nat)`

			`attribute C [multiple_instances]`

			`definition c1 [instance] : C := C.mk 1`
			`definition c2 [instance] : C := C.mk 2`

refactor(library/type_context): with the new tracing infrastructure, type_context doesn't need an io_state 2015-12-08 22:58:08 +00:00			`set_option trace.class_instances true`
feat(library/class_instance_resolution): add support for attribute [multiple-instances] in the new type class resolution procedure 2015-10-18 19:07:25 +00:00
			`definition f [s : C] : nat := C.val`

			`definition tst1 : f = 1 :=`
			`rfl`

			`definition tst2 : f = 2 :=`
			`rfl`