Swift中枚举类型的遍历与显示

emum City{

   case Beijing = 0,Shanghai,Guangzhou

   static let allValues = [Beijing Shanghai,Guangzhou]

}

遍历:

for city in City.allValues{

   print(city)

}

显示枚举名称对应的字符串:

let city = City.Beijing

let beijing ="\(city)"

print(beijing)