Swift Quick Syntax Reference

Chapter    13

Assignment Operators

When you want to initialize or update a value, you use the assignment operator (=). You saw this already when you learned to declare constants and variables with a value using the assignment operator (see Listing 13-1).

Listing 13-1. Declaring and Assigning Values

//Assigning a variable valuevar a = 1//Assigning a constant valuelet b = 2

You can update the variable values at any time after the variable has been declared using the assignment operator (see Listing 13-2).

Listing 13-2. Updating Values

a = 3

Of course, you cannot do this with a constant.

You can assign multiple values to multiple variables or constants on the same line to save space (see Listing 13-3).

Listing 13-3. Multiple Assignments

let (c, ...