Saku-Saku https://blog.hatena.ne.jp/Saku-Saku/ SakuraWi - BLog https://sakurawi.hateblo.jp/ 技術 技術-Ruby 通常の.include?では、引数の中身は１つしか渡せません .include("aaa", "bbb")とはできない。 irb(main):004:0> ["2", "3", "4"].include?("3") => true irb(main):005:0> ["2", "3", "4"].include?("3", "4") ArgumentError: wrong number of arguments (given 2, expected 1) from (irb):5:in `include?' from (irb):5 from /Users/sakurai.kota/.rbe… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsakurawi.hateblo.jp%2Fentry%2Farray-include" title="配列同士のincludeをする方法 - SakuraWi - BLog" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2017-10-18 18:29:00 rich https://sakurawi.hateblo.jp/entry/array-include 1.0 100%