From a83f77116dcddc2405917e5b9556c91292f052af Mon Sep 17 00:00:00 2001
From: Rob Rix <rob.rix@github.com>
Date: Wed, 14 Oct 2015 09:42:21 -0400
Subject: [PATCH] Add an Unroll case to Cofree.

---
 prototype/Doubt/Cofree.swift | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/prototype/Doubt/Cofree.swift b/prototype/Doubt/Cofree.swift
index 2bd234be5..7e3378463 100644
--- a/prototype/Doubt/Cofree.swift
+++ b/prototype/Doubt/Cofree.swift
@@ -1,5 +1,5 @@
 //  Copyright © 2015 GitHub. All rights reserved.
 
-public enum Cofree {
-
+public enum Cofree<B> {
+	case Unroll(B)
 }