From 9661056e100cd8b74e90183504c1fbd9c706308a Mon Sep 17 00:00:00 2001
From: Ray Greenwell <ray@threerings.net>
Date: Fri, 5 Feb 2010 02:33:57 +0000
Subject: [PATCH] Be more flexible: follow the "PECS" rule for our Function.

---
 src/java/com/samskivert/depot/XArrayList.java | 2 +-
 src/java/com/samskivert/depot/XList.java      | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/java/com/samskivert/depot/XArrayList.java b/src/java/com/samskivert/depot/XArrayList.java
index d58ef00..57c898a 100644
--- a/src/java/com/samskivert/depot/XArrayList.java
+++ b/src/java/com/samskivert/depot/XArrayList.java
@@ -34,7 +34,7 @@ public class XArrayList<T> extends ArrayList<T>
     implements XList<T>
 {
     // from interface XList<T>
-    public <R> Collection<R> map (Function<T, R> mapper)
+    public <R> Collection<R> map (Function<? super T, ? extends R> mapper)
     {
         return Lists.transform(this, mapper);
     }
diff --git a/src/java/com/samskivert/depot/XList.java b/src/java/com/samskivert/depot/XList.java
index 3fc4383..2275643 100644
--- a/src/java/com/samskivert/depot/XList.java
+++ b/src/java/com/samskivert/depot/XList.java
@@ -38,5 +38,5 @@ public interface XList<T> extends List<T>
      * Collection} to remind the caller that it is not an {@link ArrayList} but rather a lazy list
      * that will call the mapping function on the fly each time an element is read. Caveat coder.
      */
-    public <R> Collection<R> map (Function<T, R> mapper);
+    public <R> Collection<R> map (Function<? super T, ? extends R> mapper);
 }