From: 7stud -- <bbxx789_05ss@...>
Date: 2009-05-03T06:13:30+09:00
Subject: n00b ? re: CGI Hash and arrays

7stud -- wrote:
> 
> params.each do |key, val|
>   num_str = val[0]
>   num = num_str.to_i
>   total += num
> end
> 

Once you understand that, you can make it briefer:

params.each do |key, val|
  total += val[0].to_i
end

...however if it's possible that the arrays can contain more than one 
string, then you need to loop over each array too.  As per Rob 
Biedenharn's solution:


params = {
  "conf_mod"=>["20", "10"],
  "conf_impact"=>["10"],
  "avail_impact"=>["5", "10"],   #<--xtra strings
  "integrity_impact"=>["5"],
  "authorization"=>["5", "10"],
  "integrity_mod"=>["5"]
}

total = 0

params.each do |key, val|

  val.each do |str|
    total += str.to_i
  end

end

puts total

--output:--
80

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