Use @discardableResult To Choose Whether To Use Return Values

Daily Coding Tip 027

Image by Karl Egger from Pixabay

If you want to call a function that returns a value called addValues(), you’ll notice that it gives you a warning that says “Result of call to addValues() is unused.” You may not always want to use the result, so there’s an easy way to suppress this warning.

Adding @discardableResult before your function declaration gives…