package main
import (
"fmt"
)
func main() {
var ar = [...]string{"A", "B", "D", "E"}
for _, content := range ar {
switch content {
case "A":
fmt.Println("AAA")
case "B", "C", "D":
fmt.Println("BBB")
default:
fmt.Println("CCC")
}
}
}
输出：
AAA
BBB
BBB
CCC
使用fallthrough，来向下一个case语句转移流程控制权，
package main
import (
"fmt"
)
func main() {
var ar = [...]string{"A", "B", "D", "E"}
for _, content := range ar {
switch content {
case "A":
fallthrough
case "B", "C", "D":
fmt.Println("BBB")
default:
fmt.Println("CCC")
}
}
}
输出：
BBB
BBB
BBB
CCC
类型switch语句：对类型进行判定，而不是值
package main
import (
"fmt"
)
func main() {
v := 11
switch i := interface{}(v).(type) {
case int, int8, int16, int32, int64:
fmt.Printf("A signed integer: %v. the type is :%T
", v, v)
fmt.Printf("A signed integer: %v. the type is :%T
", i, i)
case uint, uint8, uint16, uint32, uint64:
fmt.Printf("A unsigned integer: %v. the type is :%T
", v, v)
fmt.Printf("A unsigned integer: %v. the type is :%T
", i, i)
default:
fmt.Println("Unknown!")
}
}
输出：
A signed integer: 11. the type is :int
A signed integer: 11. the type is :int
package main
import (
"fmt"
)
func main() {
var v interface{}
v = "hi"
switch v.(type) {
case string:
fmt.Printf("The string is %v
", v.(string))
case int, int8, int16, int32, int64:
fmt.Printf("A signed integer: %v. the type is :%T
", v, v)
case uint, uint8, uint16, uint32, uint64:
fmt.Printf("A unsigned integer: %v. the type is :%T
", v, v)
default:
fmt.Println("Unknown!")
}
}
输出：
The string is hi