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-rw-r--r--lib/ur/option.urs2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/ur/option.urs b/lib/ur/option.urs
index 62687963..ba43613f 100644
--- a/lib/ur/option.urs
+++ b/lib/ur/option.urs
@@ -1,5 +1,7 @@
datatype t = datatype Basis.option
+val monad : monad t
+
val eq : a ::: Type -> eq a -> eq (t a)
val ord : a ::: Type -> ord a -> ord (t a)