Advent Calendar for Gophers
Go1 https://qiita.com/advent-calendar/2019/go
Go2 https://qiita.com/advent-calendar/2019/go2
Go3 https://qiita.com/advent-calendar/2019/go3
Go4 https://qiita.com/advent-calendar/2019/go4
Go5 https://qiita.com/advent-calendar/2019/go5
Go6 https://qiita.com/advent-calendar/2019/go6