Zulip Chat Archive
Stream: lean4
Topic: Disable certain notation
Horațiu Cheval (Nov 15 2022 at 07:18):
Is there a way to disable a certain notation? After updating to 11-10
my code depending on Mathlib 4 no longer works
import Mathlib
inductive Foo where
| implication : Foo → Foo → Foo
infixr:60 " ⇒ " => Foo.implication
def Foo.bar : Foo → Int
| x ⇒ y => x.bar + y.bar
probably because ⇒
was introduced as a notation for Relator.LiftFun
. The notation works normally, only in pattern matching it fails with
invalid pattern, constructor or constant marked with '[match_pattern]' expected
. Can I somehow hide this notation when importing Mathlib or is changing my notation the only fix?
Mario Carneiro (Nov 15 2022 at 07:29):
you can use (priority := high)
on your syntax, I think
Horațiu Cheval (Nov 15 2022 at 07:33):
Thanks! That fixed it
Mario Carneiro (Nov 15 2022 at 07:36):
(that relator notation should be scoped
though)
Last updated: Dec 20 2023 at 11:08 UTC