The Ruby Programming Launguageの一章の数独のCode解読のために 行列の勉強． describe "grid 3x3" do before(:each) do @grid = SquareMatrix.new([11,12,13, 21,22,23, 31,32,33]) end it "should get column array by column num" do @grid.column(1).sh…

Ruby is designed to make programmers happy♪ このデザイン感からの教訓． Software is designed to make users/progoramers happy♪♪ Software Deveropment System is designed to ... ♪♪♪ ... happy♪♪♪♪