Controls

returnBool := func() int {
	return 1
}

If init

it is called if init, init a var inside if
if init

if val := returnBool(); val > 0 {
	fmt.Println("return int", val)
}

it is possible to redeclare val

val := 1
fmt.Println("redeclare val: ", val)

switch case:

cond := 1
switch cond {
case 1:
	fmt.Println("hey it is 1")
default:
	fmt.Println("hey it not 1")
}

switch change position of condition

switch {
case 1 > 0:
	fmt.Println("yes it is greater : 1 > 0")
case 0 > -1:
	fmt.Println("yes it is greather too : 0 > -1")