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![@jmmastey | railsconf 2015 macguffin.methods.grep /delete/ => [:delete]](https://files.speakerdeck.com/presentations/a2c2e2113c504b75a5fcc0d0f3ec1866/slide_33.jpg){kind=link}
![@jmmastey | railsconf 2015 params[:product_code].upcase!](https://files.speakerdeck.com/presentations/a2c2e2113c504b75a5fcc0d0f3ec1866/slide_75.jpg){kind=link}
