There is no type initializer in Swift—-One answer is to use static, it is the same as class final.

By Swift

“Unlike stored instance properties, you must always give stored type properties a default value. This is because the type itself does not have an initializer that can assign a value to a stored type property at initialization time.”

Excerpt From: Apple Inc. “The Swift Programming Language.” iBooks.

You could use a type property which default value is a closure. So the code in the closure would be executed when the type property(or class variable) is set.



But class stored properties not yet supported (tested in Xcode 8).


One ​​answer is to use static


 code>, it is the same as class final.


Good link for that is




Setting a Default Property Value with a Closure or Function




Excerpt From: Apple Inc. “The Swift Programming Language.” iBooks.




Code exampl e:




Prints




start


setting default property value with a closure




So it is lazy evaluated.




https://stackoverflow.com/questions/24137212/initialize-class-method-for-classes-in-swift


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