Hi, I currently follow the new course "Android Kotlin Fundamentals", I'm at the chapter 05.2: LiveDa...

# android

[Jérôme Gully]

Hi,
I currently follow the new course "Android Kotlin Fundamentals", I'm at the chapter 05.2: LiveData and LiveData observers, and i have a question about this chunk of code:
score.value = (score.value)?.minus(1)
why the parentheses ? isn't the exact same thing that:
score.value = score.value?.minus(1)
(score isn't nullable)

[Luca Nicoletti]

if score is not nullable, and value is, those 2 are the same

[Jérôme Gully]

Ok thanks.
Is there some situation where the parentheses means something special ?

[Luca Nicoletti]

Maybe during a cast?

[Luca Nicoletti]

(val myClass as? MySecondClass)?.secondClassMethod()

[Jérôme Gully]

thanks 🙂

[Jérôme Gully]

Strange that there are put parentheses here in this codelabs 🙂

[Luca Nicoletti]

Maybe for better understandability or readability 🙂