Kotlin miniguide #15 Collections

Create and filter a read only list:

var comics = listOf(Comics("Akira", "Japan" ), Comics ("Nausicaa", "Japan" ), Comics ("Spiderman", "Usa" ))

var titles = comics.filter ( it == "Japan")

.map(m ->m.title)

//titles will contain Akira and Nausicaa

class Comics (title : String, nation : String )

For adding or removing elements, we must use mutableListOf

A nice page about collections