Swift Protocol get only settable?

Question

why can I do this without any error:

var testDto = ModelDto(modelId: 1)
testDto.objectId = 2

while I define this:

protocol          


        

Answer 1

In your class, you create a stored property named objectId. In your protocol, you specify that the property needs a getter – that is its only requirement.

If you wanted it to be a computer property, like you expect it to, you need to declare objectId with the following:

var objectId: Int{ return (someNumber) }

Without the closure to compute the value, it is, by default, a stored property.