Structure var declaration

Community
1

Here is a short snippet of code:

struct MyStructure {
//fancy code here
}
var temp:MyStructure = MyStructure()
var temp1:MyStructure

Are the two variable declarations the same? To me it looks the code runs the same…
Is one preferred over the other?

Thanks
Monty

2

Welcome to the community Monty!

They are not the exact same.

var temp:MyStructure = MyStructure()
This creates a variable called temp, and initializes it to a new instance of MyStructure

var temp1:MyStructure
This creates a variable temp1, of type MyStructure but it is not set to a value, so if you print it, it’ll be nil

The first one can be shortened because of type inference, the compiler knows it’s type MyStructure because you’re giving it a value at initialization.
var temp = MyStructure()

Overall I’d say you’ll use the first one more often than the second. (Relatively) Rarely do you declare a variable, but not give it a value

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