Working with Go

Control Structures

Using If, Else, Switch and Conditionals in Go.

If, Else

Go is not picky, conditionals don't require parentheses.

if num > 3 {
    fmt.Println("Many")
}

Go is picky, else must be on the same line as closing if bracket.

if num == 1 {
    fmt.Println("One")
} else if num == 2 {
    fmt.Println("Two")
} else {
    fmt.Println("Many")
}

Switch Statement

Using switch and case conditionals in Go. Note: Go auto breaks each case, this avoids the typical issue of cascading when forgetting a break statement.

switch num {
    case 1:
        fmt.Println("One")
    case 2:
        fmt.Println("Two")
    default:
        fmt.Println("Many")
    }
}

An alternative switch syntax allows you to check beyond equality:

switch {
    case num == 1:
        fmt.Println("One")
    case num == 2:
        fmt.Println("Two")
    case num > 2:
        fmt.Println("Many")
    default:
        fmt.Println("Less than 1")
    }
}