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