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iOS Swift Basics Swift Operators Unary Operators

Swift Basics

I came across this question...What is the value of gameOver? let gameOver = !false.... and the answer is true but how?

2 Answers

Jennifer Nordell
seal-mask
STAFF
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Jennifer Nordell
Treehouse Teacher

Hi there! The ! is sometimes called the negation operator. It takes a true or false value and flips it to the opposite So !true is false and !false is true.

Hope this helps! :sparkles:

edited for additional note*

If you want to convert this to English, you could say it as " let gameOver be set to not false". And what is not false? There is only one alternative, and that is true. A condition can only be false or true.

Thank you so much!