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Count Values in an Array (See related posts)

This modifies the Array class to allow for easy summing
class Array
  def total
    t = 0
    self.each { |v| t += v }
    t
  end
end

Use it like this:
[1,2,2,3].total  # => 8
to ruby array count total by danger on Wed Jun 14 17:52:35 -0400 2006

Comments on this post

peter posts on Jun 14, 2006 at 20:06
Try this. It does the same thing but is more concise:

class Array
  def total
   self.inject(nil) { |p, i| p ? p+i : i }
  end
end


It also allows you to do this:

['a','b','c'].total  # => "abc"

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