From d0aeedeb523b269cd4944cf4fd590fe05b8e7061 Mon Sep 17 00:00:00 2001
From: Rob Rix <rob.rix@github.com>
Date: Thu, 22 Oct 2015 17:15:49 -0400
Subject: [PATCH] Define `iterate` so as to clarify its relationship with
 `cata`.

---
 prototype/Doubt/Free.swift | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/prototype/Doubt/Free.swift b/prototype/Doubt/Free.swift
index beac82e83..6a5d0c4aa 100644
--- a/prototype/Doubt/Free.swift
+++ b/prototype/Doubt/Free.swift
@@ -57,7 +57,7 @@ public enum Free<Leaf, Annotation, Value>: CustomDebugStringConvertible {
 	public func iterate(transform: Syntax<Value, Leaf> -> Value) -> Value {
 		return analysis(
 			ifPure: id,
-			ifRoll: { transform($0.map { $0.iterate(transform) }) })
+			ifRoll: { $0.map { $0.iterate(transform) } } >>> transform)
 	}