Menu
I am teaching myself to program using Swift 3, and I am currently learning about booleans. I noticed that if I want to explicitly declare my variable of type bool, I have two options
Bool
or
Boolean
I was wondering why we have these two options if they are the same? Well, are they the same? This is what I'm confused about.
Thanks in advance.
447
Bool represents Boolean values in Swift. Create instances of Bool by using one of the Boolean literals true or false , or by assigning the result of a Boolean method or operation to a variable or constant.
Swift recognizes a value as boolean if it sees true or false . You can implicitly declar a boolean variable let a = false or explicitly declare a boolean variable let i:Bool = true .
Bool in Swift is not a primitive. Everything in Swift are objects. Your variable test is a Bool! , which is an implicitly unwrapped optional and the default value is nil .
In computer science, a boolean or bool is a data type with two possible values: true or false. It is named after the English mathematician and logician George Boole, whose algebraic and logical systems are used in all modern digital computers. Boolean is pronounced BOOL-ee-an.
Bool is Swift's boolean data type. Boolean hasn't existed since the early days of Swift.
196
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
