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@k-yamada-githubin株式会社ソニックス

railsでオープンクラスをするときの作法

Posted at

参考

例: Stringクラスを拡張する場合

lib/ext/string.rb
class String
  def is_number?
    true if Float(self) rescue false
  end
end
config/initializers/extensions.rb
require 'ext/string'
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