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, ...