travelhacks https://blog.hatena.ne.jp/travelhacks/ Hacking life travel tech anything https://travelhacks.hatenablog.com/ ruby ２次元配列関係で学んだこと そもそも２次元配列とは？ 配列の中に配列があるものとどこかで読みました 何度もググってしまったので自分用にメモ # 宣言時に代入 array = [[1,2,3], [4,5,6], [7,8,9]] arr = [] #適当に3回ループ 3.times do val1 = "a" val2 = "b" arr << [val1, val2] end # 実行すると => [["a", "b"], ["a", "b"], ["a", "b"]] 3.times.map { %w[a b] } => [["a","b"],["a","b"],["a","b"]] 3.… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftravelhacks.hatenablog.com%2Fentry%2Fruby-two-dimensions-array" title="Ruby ２次元配列の作り方 そのほか２次元配列について学んだことメモ - Hacking life travel tech anything " class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> https://cdn-ak.f.st-hatena.com/images/fotolife/t/travelhacks/20180324/20180324075940.jpg Hatena Blog https://hatena.blog 2018-03-25 22:40:50 rich https://travelhacks.hatenablog.com/entry/ruby-two-dimensions-array 1.0 100%