12 Logical Operators Explained in Swift
Logical NOT Operator
The logical NOT operator (!a) inverts a Boolean value so that true becomes false, and false becomes true.
Logical AND Operator
The logical AND operator (a && b) creates logical expressions where both values must be true for the overall expression to also be true.
If either value is false, the overall expression will also be false. In fact, if the first value is false, the second value won’t even be evaluated, because it can’t possibly make the overall expression equate to true. This is known as short-circuit evaluation.
Logical OR Operator
The logical OR operator (a || b) is an infix operator made from two adjacent pipe characters. You use it to create logical expressions in which only one of the two values has to be true for the overall expression to be true.
Like the Logical AND operator above, the Logical OR operator uses short-circuit evaluation to consider its expressions. If the left side of a Logical OR expression is true, the right side isn’t evaluated, because it can’t change the outcome of the overall expression.
All content is found at:
https://docs.swift.org/swift-book/Lan...