Do you need the 'else' comparator in a function with optionals?

Question

My solution was pretty much the same as Amit's with one exception.

The function as I wrote it was:

func divisible (#numberOne : Int, #numberTwo : Int ) -> Bool? {
        if numberOne % numberTwo == 0 {
            return true
        }
   return nil
}

In Amit's example however he uses the 'else' part of 'if-else' to return that nil value.

func divisible (#numberOne : Int, #numberTwo : Int ) -> Bool? {
        if numberOne % numberTwo == 0 {
            return true
        } else {
              return nil
          }
}

Both methods seem to work but out of interest is one of these ways considered to be the 'proper' approach to this?

Answer 1 · 2015-03-12T21:48:27Z

March 12, 2015 9:48pm

Either method works just fine. It's totally a matter of preference. I prefer Amit's, personally, because it sounds better when you read it aloud. Remember: the goal isn't to write a program in the least amount of lines possible, but to write a program in the best way possible (which usually means the most readable, easy to maintain way)

Answer 2 · 2015-03-14T00:43:27Z

March 14, 2015 12:43am

Both will work fine. Just the If statement, is compared as the If-Then statement in C. If-Else is the If Then Else statement in C. If you have a action that gets completely satisfied in If class, then just finish it with If statement alone.

There is no need to put in IF Else statement. Again this is a big topic among the developers. Either way is fine.

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Mathew Munro

Mathew Munro

Do you need the 'else' comparator in a function with optionals?

2 Answers

Michael Hulet

Michael Hulet

Srinivasan Senthil

Srinivasan Senthil