Go语言学习之函数的定义与使用详解_Golang_

func min(num1, num2 int) int { if num1 <= num2 { return num1 } else { return num2 } } func main() { fmt.Printf("max = %d\n", min(10, 12)) } 

func swap(num1, num2 int) (int, string) { return num1 + num2, "haha" } func main() { a, b := swap(10, 12) fmt.Printf("swap = %d - %v\n", a, b) } 

func swap1(num1, num2 *int) { var temp int temp = *num1 *num1 = *num2 *num2 = temp } func main() { c, d := 10, 20 swap1(&c, &d) fmt.Printf("swap1 c=%d,d=%d\n", c, d) } 

func method(num1 int) int { getMax := func(x, y int) int { if x > y { return x } else { return y } } a := num1 - 10 b := getMax(num1, a) fmt.Printf("value = %d\n", b) return b } func main() { fmt.Printf("method = %d\n", method(20)) } 

//匿名函数 func anonymous(num int) func() int { var a int a = num return func() int { a += 1 return a } } func main() { flagNum := anonymous(100) fmt.Printf("1 -> %d\n", flagNum()) fmt.Printf("2 -> %d\n", flagNum()) fmt.Printf("3 -> %d\n", flagNum()) flagNum1 := anonymous(18) fmt.Printf("4 -> %d\n", flagNum1()) fmt.Printf("5 -> %d\n", flagNum1()) }