在開關中使用 where 語句
where 語句可以在 switch case 匹配中使用,以新增正匹配所需的其他條件。以下示例不僅檢查範圍,還檢查數字是奇數還是偶數:
switch (temperature) {
case 0...49 where temperature % 2 == 0:
print("Cold and even")
case 50...79 where temperature % 2 == 0:
print("Warm and even")
case 80...110 where temperature % 2 == 0:
print("Hot and even")
default:
print("Temperature out of range or odd")
}