Issue #7228 has been reported by pypypy567 (py _). ---------------------------------------- Bug #7228: Matrix#determinant_e returns rank https://bugs.ruby-lang.org/issues/7228 Author: pypypy567 (py _) Status: Open Priority: Normal Assignee: Category: Target version: ruby -v: ruby 1.9.3p286 (2012-10-12 revision 37165) [i386-mswin32_100] http://bugs.ruby-lang.org/projects/ruby-trunk/repository/revisions/37328/entry/lib/matrix.rb#L1090 > def determinant_e > warn "#{caller(1)[0]}: warning: Matrix#determinant_e is deprecated; use #determinant" > rank > end rank_e ????????³ã????¼ã????¦ç?´ã??å¿???????????????«è???????¾ã????? -- http://bugs.ruby-lang.org/