Would you go with 1️⃣ :

nullableValue = NullableValue(1, 2, 3)
nullableValue?.someProperty = 4

or 2️⃣ :

nullableValue = NullableValue(1, 2, 3).apply {
    someProperty = 4
}

where

NullableValue

constructor has a lot of params.

Isn't 2 supposed to be

?.apply

?

Nope, in this case

NullableValue()

is a constructor of object. Example is a little misleading (

So why does 1 have

?.

? Could you show the implementation?

nullableValue

defined as class property:

var nullableValue: NullableValue? = null

I personally opt for

apply

when you’re wanting to call additional methods/properties immediately following the constructor. One potential advantage also being you now have context to the full type returned by the method instead of relying on the potentially more generic property being set to