From b906a46edd76e873cec0714eb1e96d68caec363c Mon Sep 17 00:00:00 2001
From: marcandre <marcandre@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 30 Dec 2011 06:04:04 +0000
Subject: [PATCH] * lib/matrix.rb (symmetric?): Trivial optimization

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34160 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 lib/matrix.rb | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/matrix.rb b/lib/matrix.rb
index 7a20fae520..7569d68607 100644
--- a/lib/matrix.rb
+++ b/lib/matrix.rb
@@ -718,9 +718,10 @@ class Matrix
   #
   def symmetric?
     Matrix.Raise ErrDimensionMismatch unless square?
-    each_with_index(:strict_upper).all? do |e, row, col|
-      e == rows[col][row]
+    each_with_index(:strict_upper) do |e, row, col|
+      return false if e != rows[col][row]
     end
+    true
   end
 
   #