Swift Operator Precedence
Swift Operator Precedence
Operator precedence determines evaluation order.
Multiplication comes before addition; && before ||.
Use parentheses to control order.
Control order of evaluation with precedence
Understand how operators are prioritized and add parentheses to make evaluation order explicit when needed.
Example
print(2 + 3 * 4)
print((2 + 3) * 4)
print(true || false && false)
print((true || false) && false)This example shows how parentheses change the result.
Boolean Precedence
&& is evaluated before ||. Use parentheses to clarify intention.
Example
let a = true
let b = false
let c = true
print(a || b && c) // true (&& before ||)
print((a || b) && c) // true
print(a && b || c) // true ((a && b) || c)
