soukouki https://blog.hatena.ne.jp/soukouki/ soukouki’s diary https://soukouki.hatenablog.jp/ Ruby 本 前回 5.5まで(一部理解できてない) 特異メソッド a = [1,2,3] b = [1,2,3] c = a def a.xx self.inject(:+) end a.xx # => 6 b.xx # NoMethodError: undefined method `xx' for [1, 2, 3]:Array c.xx # => 6 [1,2,3].xx # NoMethodError: undefined method `xx' for [1, 2, 3]:Array c = a c.xx # => 6 c.clone.xx # => 6 c.dup.xx # NoMethodE… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsoukouki.hatenablog.jp%2Fentry%2F2016%2F07%2F18%2F185258" title="メタプログラミングRubyを読んで(3) - soukouki’s diary" 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 2016-07-18 18:52:58 rich https://soukouki.hatenablog.jp/entry/2016/07/18/185258 1.0 100%