Q: if not condition

Reviewing information from here:

https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift _Programming_Language/GuidedTour.html#//…

And if else is in the form:

1. if score > 50 {
2.    teamScore += 3
3.   } else {
4.    teamScore += 1
5.   }

and later in the text there is a test for equality:

1. print(optionalString == nil)

So the test for inequality is:

!=

like this:

1. if (score != 50) {
2.    // the score did not equal 50
3.   } else {
4.    // the score did equal 50
5.   }