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iOS Swift Basics (retired) Variables and Constants Variables

Jonathan Whelchel
Jonathan Whelchel
2,096 Points
Posted by Jonathan Whelchel
Jonathan Whelchel
2,096 Points

var versus =

what is the difference between 

var str = "playground"

and

str = playground

3 Answers

Michael Hulet
Michael Hulet
47,913 Points
Michael Hulet
Michael Hulet
47,913 Points

The first one is creating a new variable str and assigning the String value of "playground" to it, but the second one is assigning the value of the already-created variable playground to the also already-created variable str

Jonathan Whelchel
Jonathan Whelchel
2,096 Points
Jonathan Whelchel
Jonathan Whelchel
2,096 Points

What I'm saying is why do var at all when I can just do str =

Michael Hulet
Michael Hulet
47,913 Points
Michael Hulet
Michael Hulet
47,913 Points

Because you can't do just str = whatever. Using the var keyword sets up the variable to be used for the first time. After that, you shouldn't use the var keyword, because that's only used for creating new variables