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Questions - kotlin-null-safety

Compact null and emptyness check in Kotlin?

I have a null and not empty check: myLocalVariable: String? = null //.. if (item.data.propertyList !== null && item.data.propertyList!!.isNotEmpty()) { myLocalVariable = item.data.property...
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Arsene Raul

kotlin

kotlin-null-safety

Votes: 0

Answers: 2

Latest Answer

the easiest and most compact way, without the need of any if-checks is to just do: myLocalVariable = item.data.propertyList?.firstOrNull() if you want to prevent overwriting in the case of null you c...
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Ivo

Kotlin function override null check

I try to get lastLocation of user and implemented the method like this. getLocationClient()?.lastLocation?.addOnSuccessListener(object : OnSuccessListener<Location> { o...
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ahmetnecdeto

kotlin

android-location

kotlin-null-safety

Votes: 0

Answers: 1

Latest Answer

The type parameter for OnSuccessListener needs to be nullable too, i.e. OnSuccessListener<Location?> instead of OnSuccessListener<Location> getLocationClient()?.lastLocation?.addOnSuccessL...
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Maurice Lam

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