From f4e85257de36e77fa45f1e60e4cfea8b3378f4f8 Mon Sep 17 00:00:00 2001
From: Jason Gross <jagro@google.com>
Date: Fri, 29 Jul 2016 11:49:36 -0700
Subject: Make IsIso a class

---
 src/Util/Isomorphism.v | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/Util/Isomorphism.v b/src/Util/Isomorphism.v
index a02afc3bf..0e6553dcd 100644
--- a/src/Util/Isomorphism.v
+++ b/src/Util/Isomorphism.v
@@ -1,4 +1,8 @@
-Record IsIso {A B} (f : A -> B) :=
+Class IsIso {A B} (f : A -> B) :=
   { iso_inv : B -> A;
     is_right_inv : forall x, f (iso_inv x) = x;
     is_left_inv : forall x, iso_inv (f x) = x }.
+
+Arguments iso_inv {_ _} _ {_} _.
+Arguments is_right_inv {_ _} _ {_} _.
+Arguments is_left_inv {_ _} _ {_} _.
-- 
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