Yukihiro (Matz) Matsumoto Creator of Ruby, Heroku Videos (3) Ruby After 25 Years - Singapore Ruby Group Jul 26, 2018 Keynote: Simple goal. Hard to accomplish - RedDotRubyConf 2017 Jun 26, 2017 Keynote: Ruby Typing - RedDotRubyConf 2016 Jun 26, 2016
