Created
September 21, 2011 03:54
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| cat tim.csv | ruby -e 'STDIN.each { |l| @h ||= {}; n,v = l.split(","); v=v.to_f; @h[n] ? @h[n] += v : @h[n] = v }; @h.each { |n,v| puts "#{n},#{v}" }' |
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| Tim | 150.00 | |
|---|---|---|
| James | 15.00 | |
| Robert | 200.00 | |
| James | 270.13 | |
| Robert | 10.00 | |
| Tim | 5.00 | |
| Tim | 600.00 | |
| James | 13.98 |
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