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igaiga/standard_errors.rb

Created October 30, 2012 08:25
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StandardErrorのサブクラス全表示
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standard_errors.rb
# thanks kwappa-san!
puts Object.constants.find_all { |c|
(cc = Object.const_get(c)) && # シンボルからクラス定数を取得
cc.respond_to?(:ancestors) && # ancestorsメソッドを持つ
cc.ancestors.include?(StandardError) # StandardErrorとそのサブクラス
}.sort
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