From: bill gate <lists@...>
Date: 2012-06-13T21:15:18+09:00
Subject: What's different about defind class method?

A.class_eval(<<-EOF, __FILE__, __LINE__)
  def method_a
   puts "calling method_a......"
  end
EOF

A.class_eval <<-EOF
 def method_b
   puts "calling method_b......"
 end
EOF

A.new.method_a
A.new.method_b

Why lot of Rails snippet code  use __FILE__ __LINE__

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