テンプレ おれのテンプレ。class 化して require したただけでは、オプション処理が発動しないようにしている。 require 'optparse' class Test class CLI def parse_options(argv = ARGV) op = OptionParser.new # op がローカル変数なので `define_method` で `usage` を定義しているが、ただのこだわりに過ぎないと言えばその通り self.class.module_eval do define_method(:usage) do |msg = nil| puts op.to_s puts "error: #{msg}" if msg exit 1 end end # default value opts = { boolean: false, string: '', in
![Ruby の OptionParser チートシート - Qiita](https://cdn-ak-scissors.b.st-hatena.com/image/square/603314b6451474333e99f49188f1ce25c1916a3f/height=288;version=1;width=512/https%3A%2F%2Fqiita-user-contents.imgix.net%2Fhttps%253A%252F%252Fcdn.qiita.com%252Fassets%252Fpublic%252Farticle-ogp-background-412672c5f0600ab9a64263b751f1bc81.png%3Fixlib%3Drb-4.0.0%26w%3D1200%26mark64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTk3MiZoPTM3OCZ0eHQ9UnVieSUyMCVFMyU4MSVBRSUyME9wdGlvblBhcnNlciUyMCVFMyU4MyU4MSVFMyU4MyVCQyVFMyU4MyU4OCVFMyU4MiVCNyVFMyU4MyVCQyVFMyU4MyU4OCZ0eHQtYWxpZ249bGVmdCUyQ3RvcCZ0eHQtY29sb3I9JTIzMjEyMTIxJnR4dC1mb250PUhpcmFnaW5vJTIwU2FucyUyMFc2JnR4dC1zaXplPTU2JnM9NDYzMWU1YjY1YTU4NjMzY2JkNGY5ZTg3OGJmYTJjOGU%26mark-x%3D142%26mark-y%3D57%26blend64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZoPTc2Jnc9NzcwJnR4dD0lNDBzb25vdHMmdHh0LWNvbG9yPSUyMzIxMjEyMSZ0eHQtZm9udD1IaXJhZ2lubyUyMFNhbnMlMjBXNiZ0eHQtc2l6ZT0zNiZ0eHQtYWxpZ249bGVmdCUyQ3RvcCZzPWE0MjFiNjUzNjgxMDdiYzY1MjhiNzlkZDFhNWZlMmZm%26blend-x%3D142%26blend-y%3D436%26blend-mode%3Dnormal%26txt64%3DaW4g5qCq5byP5Lya56S-Wk9aTw%26txt-width%3D770%26txt-clip%3Dend%252Cellipsis%26txt-color%3D%2523212121%26txt-font%3DHiragino%2520Sans%2520W6%26txt-size%3D36%26txt-x%3D156%26txt-y%3D536%26s%3Da1d75e78ca0372b9249080f19e473b75)