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iOS Intermediate Swift Properties Computed Properties

Ingo Ngoyama
Ingo Ngoyama
4,882 Points

dot notation confusion on Computed Properties

/* It says you have to make an instance but when I try to assign an instance to a variable I get an error but the direct instance works for SomeStructure.computedTypeProperty. Why and what is the difference? */

struct SomeStructure { static var storedTypeProperty = "some value" static var computedTypeProperty: Int { return 1 + 1 } } SomeStructure.computedTypeProperty // this works

let compute = SomeStructure() compute.computedTypeProperty //this wont work

1 Answer

Jiri Janecek
Jiri Janecek
6,443 Points

Hi Ingo!

The problem is the word "static". Usually, you call methods/properties on instances. However, if you set something as "static", you call it on that data type (structure, class). Get rid of that word and you'll be able to call it on instances :)