by Yurie Yamane & Masayoshi Takahashi
at RubyConf 2019 on Nov 20th, 2019

by Yurie Yamane & Masahiko Takahashi
at RubyConf 2018 on Nov 14th, 2018

by Yurie Yamane & Masayoshi Takahashi
at RubyConf 2017 on Nov 16th, 2017

by Yurie Yamane , , Miki Rezentes , Olivia Brundage , Jeff Foster , Jonathon Slate , Ryder Timberlake , Caroline Jobe , Victoria Gonda , Sam Phippen , Jen Pengelly , André Arko , Kate Rezentes , Chris Vannoy , Michael Hartl , Michael Cain , Starr Chen , Jamie Gaskins , Andrew Faraday , Kei Nawanda , Mischa Lewis , Francois Lapierre Messier , Amy Howes , Assaf Hefetz , James Thompson & Noah Gibbs
at RubyConf 2016 on Nov 11th, 2016

by Yurie Yamane & Masayoshi Takahashi
at RubyConf 2015 on Nov 17th, 2015

by Yurie Yamane & Masayoshi Takahashi
at RubyConf 2014 on Nov 18th, 2014

by Yurie Yamane & Masayoshi Takahashi
at RubyConf 2013 on Nov 9th, 2013

by Yurie Yamane , Masayoshi Takahashi & Yuichiro MASUI
at RubyConf 2012 on Nov 3rd, 2012