control

If you end with a complete statement, lexer puts ; so {/else must be on same line

If

if x < 0 && err == nil{
    result = "Greater"
} else if x == 0 {
    result = "Equal"
} else {
    result = "Less"
}

Scoping

Can scope to conditonal block

if x := 42; x < 0 {
    //....
}
fmt.Println(x) //WONT WORK

Switch

Like C/Java, but evaluates any simple type and no breaks needed jumps after block fround

//switch dow {
switch dow := rand.Intn(6); dow {
    case 1:
        //..
    case 7:
        //..
    default:
        //..
}

Can do if like stuff

x := -42;
switch {
    case x > 0:
        result = "Greater"
    case x < 0:
        result = "Less"
        fallthrough //execute everything below too
    default:
        result = "Equal or Less"
}

For

Basic

for i := 0; i < 10; i++ {
    sum += i
}

Over a collections

for i := 0; i < len(colors); i++ {
    fmt.Println(colors[i])
}

for i := range colors { //set i to current index    
    fmt.Println(colors[i])
}

While

for sum < 1000 {
    sum += sum
    if sum > 500 {
        break
    }
}

GO-TO!!!

with labels and jumps

endofprogram : fmt.Println("start of program")

if sum > 200 {
    sum -= sum
    goto endofprogram
}