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authorGravatar Adam Chlipala <adamc@hcoop.net>2009-09-15 15:48:53 -0400
committerGravatar Adam Chlipala <adamc@hcoop.net>2009-09-15 15:48:53 -0400
commitefa6f97eee79311cd06592ed0241acfc40561785 (patch)
tree47760017bfc37999184289878129fd3e64115e52 /lib/ur/option.urs
parent8e944e62818045b820f45776a396bc1b66ab3056 (diff)
Filters implementation type-checking
Diffstat (limited to 'lib/ur/option.urs')
-rw-r--r--lib/ur/option.urs1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/ur/option.urs b/lib/ur/option.urs
index 984bc681..f4570768 100644
--- a/lib/ur/option.urs
+++ b/lib/ur/option.urs
@@ -2,6 +2,7 @@ datatype t = datatype Basis.option
val eq : a ::: Type -> eq a -> eq (t a)
+val isNone : a ::: Type -> t a -> bool
val isSome : a ::: Type -> t a -> bool
val mp : a ::: Type -> b ::: Type -> (a -> b) -> t a -> t b