似ているので覚え書き。
List
iex(1)> list1 = [name: "taji", age: 43, address: "Tokyo"]
[name: "taji", age: 43, address: "Tokyo"]
iex(2)> list1[:address]
"Tokyo"
iex(3)> list2 = [{:name, "taji"}, {:age, 43}, {:address, "Tokyo"}]
[name: "taji", age: 43, address: "Tokyo"]
iex(4)> list2[:address]
"Tokyo"
Map
iex(1)> map = %{"name" => "taji", "age" => 43, "address" => "Tokyo"}
%{"address" => "Tokyo", "age" => 43, "name" => "taji"}
iex(2)> map["address"]
"Tokyo"