* lib/matrix.rb: Add first_minor [fix GH-568]

  Patch by gogotanaka

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45527 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 0 deletions

diff --git a/NEWS b/NEWS
index 244e79a0ae..4e344227bb 100644
--- a/NEWS
+++ b/NEWS
@@ -27,6 +27,11 @@ with all sufficient information, see the ChangeLog file.
     * Most symbols which are returned by String#to_sym and
       String#intern are GC-able.
 
+* Matrix
+  * New methods:
+    * Matrix#first_minor(row, column) returns the submatrix obtained
+      by deleting the specified row and column.
+
 === Core classes compatibility issues (excluding feature bug fixes)
 
 * IO