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Lots of Array methods

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  1. # use Array#inject to calculate totals
  2.  
  3. def number_of_incomings
  4.   assets.inject(0) {|total, asset| total += asset.incomings.size }
  5. end

URL: http://www.therailsway.com/2007/1/10/assetsgraphed-part-2

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