Basic Kotlin question Am I right that this ``` var matches = kotlinlang #announcements

Basic Kotlin question. Am I right that this: ``` v...

Mathias Brandt

06/27/2018, 9:50 AM

Basic Kotlin question. Am I right that this:

Copy code

var matches = liveMatches.value
if(matches == null) {
    matches = ArrayList()
}

Can be shortened to this:

Copy code

var matches = liveMatches.value ?: ArrayList()

👌 3

gildor

06/27/2018, 9:58 AM

there is also handy extension

List?.orEmpty()

, but you cannot use it in your case, it returns immutable empty list

Mathias Brandt

06/27/2018, 10:47 AM

Thanks for the tip, though!

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