go-type-switch-basics

what’s type switch in Go

tags: learning go programming

content

• in go-type-assertion-1, we have code like:

var x any
x := 10
value, ok := x.(int)
if ok {
	fmt.Println(value, "is an int")
}

• if we wanna do different stuff based on the type, we can use a switch statement:

func checkType(i any) {
	switch value := i.(type)
	case int:
		fmt.Println(value, "is an int")
	case string:
		fmt.Println(value, "is a string")
	default:
		fmt.Println("unknown type")
}

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