mirror of
https://github.com/idris-lang/Idris2.git
synced 2024-12-21 10:41:59 +03:00
14 lines
380 B
Idris
14 lines
380 B
Idris
|
%unbound_implicits off
|
||
|
|
||
|
record JamesBondTheme where
|
||
|
isVinyl : Bool
|
||
|
|
||
|
-- The James Bond Equality states that for every record field `f`,
|
||
|
-- the prefix form `f` must be definitionally equal to `.f`.
|
||
|
jbeq : isVinyl = (.isVinyl)
|
||
|
jbeq = Refl
|
||
|
|
||
|
-- Then its applications are seamlessly interchangeable, too.
|
||
|
jbeqApp : (rec : JamesBondTheme) -> isVinyl rec = rec.isVinyl
|
||
|
jbeqApp _ = Refl
|