If Statements

The most important thing to have in a programming language is an if statement. These dictate how your code will behave based on different conditions.

Create an if statement using the if keyword followed by the condition and braces:

if x > 10 {
    println("yes")
}

Else-if Branches

You can use else if followed by another condition in case the first one isn’t satisfied.

if user == "admin" {
    println("Administrator access.")
} else if user == "guest" {
    println("Guest access.")
}

If the first condition is satisfied then any else-ifs will not run.

Else Branch

Finally comes the else branch. This does not take any condition and will run if none of the above conditions were satisfied (As a failsafe).

if user == "admin" {
    println("Admininstrator access.")
} else if user == "guest" {
    println("Guest access.")
} else {
    println("Unknown user. Intruder detected!")
}