* lib/matrix.rb (symmetric?): Trivial optimization

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34160 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files 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
 
   #