| 2017 |
Kentaro Goto / ごとけん |
Ruby in office time reboot |
| 2009 |
Kentaro Goto / ごとけん |
Numeric in Ruby |
| 2009 |
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あらためて仕事で使うRuby |
| 2008 |
Kentaro Goto / ごとけん |
More Ruby in daily business |
| 2007 |
Kentaro Goto / ごとけん |
Use Ruby More At Work |
| 2006 |
Kentaro Goto / ごとけん |
仕事で使うRuby |