From 6f444bece417a18127782d909a518c91962823c9 Mon Sep 17 00:00:00 2001
From: Tim Yates <tyates@picr.man.ac.uk>
Date: Mon, 2 Sep 2013 12:59:18 +0100
Subject: [PATCH] Mention mutating with List.sort

---
 groovy.html.markdown | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/groovy.html.markdown b/groovy.html.markdown
index 63cef76b..135efc0f 100644
--- a/groovy.html.markdown
+++ b/groovy.html.markdown
@@ -51,6 +51,7 @@ println x
 /*
   Collections and maps
 */
+
 //Creating an empty list
 def technologies = []
 
@@ -81,9 +82,12 @@ technologies.eachWithIndex { it, i -> println "$i: $it"}
 technologies.contains('Groovy')
 technologies.containsAll(['Groovy','Grails'])
 
-//Sort a list
+// Sort a list (mutates original list)
 technologies.sort()
 
+// To sort without mutating original, you can do:
+sortedTechnologies = technologies.sort( false )
+
 //Replace all elements in the list
 Collections.replaceAll(technologies, 'Gradle', 'gradle')