Multiple-attempt exception handling for class methods

exception_handling_class_methods.rb

class SillyError < StandardError; end

module CatchAnError
  def self.included base
    base.extend CatchSpecific
  end

  module CatchSpecific
    def catch_specific_error(a,stdout)
      num_attempts = 0
      begin
        num_attempts += 1
        stdout.puts "attempt: #{num_attempts}"
        yield
      rescue SillyError
        puts "Silly Error Raised"
        return nil if (num_attempts >=2)
        retry
      end
    end
  end
end

class AwesomeModule
  include CatchAnError

  def self.run
    self.catch_specific_error("hats",$stdout){
      raise SillyError
    }
  end
end

AwesomeModule.run