weight_string_to_float.rb

# Input strings like "52 lb 6 oz" or "8 oz"
def weight_string_to_float(weight_string)
  /(?<lb>[0-9]*\slb\s)*(?<oz>[0-9]*\soz)/ =~ weight_string
  lbs = 0
  unless lb.nil?
    lbs += lb.to_i
  end

  unless oz.nil?
    lbs += (oz.to_i * 0.0625)
  end

  lbs
end