RubyConf 2017: Opening Keynote - Good Change, Bad Change by Yukihiro Matsumoto
RubyConf 2017: Opening Keynote - Good Change, Bad Change by Yukihiro Matsumoto
RubyConf 2017: Opening Keynote - Good Change, Bad Change by Yukihiro Matsumoto #ruby #rubydeveloper #rubyonrails #rubyconf https://www.rubyonrails.ba/single/rubyconf-2017-opening-keynote---good-change-bad-change-by-yukihiro-matsumoto