if let unwrappedValue = optionalValue {

// Do something with the unwrappedValue

} else {

// Handle the case where optionalValue is nil

}

let optionalName: String? = "Alice"

if let name = optionalName {

print("Hello, \(name)!")

} else {

print("Hello, anonymous person!")

} 

// the if let is the optional value part. If optionalName variable has a value then it will run. If the value is nil then the else statement will run.