Maps

Maps are collections that associate keys with values. They can be mutable or immutable.

myMap = Map(String, Integer) {
  ("foo", 12)
  ("bar", 13)
}

Access and update

let scores = Map(String, Integer) {
	("ana", 12)
	("bao", 17)
}

let anaScore = scores["ana"]

mutable counters = Map(String, Integer) {
	("visits", 1)
}
counters["visits"] = 2

Iteration

let usersById = Map(Integer, String) {
	(1, "Ana")
	(2, "Bao")
}

for usersById >> (id, name) {
	console.log("{id} -> {name}")
}

Adding and removing

mutable inventory = Map(String, Integer)
inventory["apples"] = 3
inventory["oranges"] = 2
inventory.delete("apples")

Last update at: Invalid Date