You can declare your map as `ConcurrentHashMap lt Long Strin kotlinlang #getting-started

You can declare your map as `ConcurrentHashMap<...

ilya.gorbunov

01/17/2017, 3:33 AM

You can declare your map as

ConcurrentHashMap<Long, String>

and cast it to

ConcurrentHashMap<Long, String?>

before calling computeIfAbsent.