キー、値を全て取得する - 配列とハッシュ - @Ruby

members = { 
  "dev1" => "ooishi", 
  "dev2" => "kishi", 
  "dev3" => "katou", 
  "infra1" => "ishikawa", 
  "infra2" => "ookawa"
}
 
members.each {|key, value|
  puts "#{key} : #{value}"
}

結果

infra2 : ookawa
infra1 : ishikawa
dev3 : katou
dev2 : kishi
dev1 : ooish