```val result Map lt String List lt xyzClass gt gt = list gr kotlinlang #announcements

```val result: Map<String?,List<xyzClass>...

chirag

06/22/2018, 3:27 PM

Copy code

val result: Map<String?,List<xyzClass>> = list.groupBy {
            it.nullableString
        }

so it is returning

Map<String?,List<xyzClass>>

but i need

Map<String,List<xyzClass>>