``` val map = mutableMapOf 1 to mutableListOf 1 2 3 map 1 += kotlinlang #announcements

``` val map = mutableMapOf(1 to mutableListOf(1, 2...

kirillrakhman

06/24/2016, 1:13 PM

Copy code

val map = mutableMapOf(1 to mutableListOf(1, 2, 3))
map[1]!!+= 4

👍 1