如何使用代码选择列表中的第一项？

my_list = ['item1', 'item2', 'item3']
first_item = my_list[0]

const myList = ['item1', 'item2', 'item3'];
const firstItem = myList[0];

List<String> myList = Arrays.asList("item1", "item2", "item3");
String firstItem = myList.get(0);

List<string> myList = new List<string> { "item1", "item2", "item3" };
string firstItem = myList[0];

$myList = array('item1', 'item2', 'item3');
$firstItem = $myList[0];

my_list = ['item1', 'item2', 'item3']
first_item = my_list[0]

let myList = ["item1", "item2", "item3"]
let firstItem = myList[0]

myList := []string{"item1", "item2", "item3"}
firstItem := myList[0]

val myList = listOf("item1", "item2", "item3")
val firstItem = myList[0]

let my_list = vec!["item1", "item2", "item3"];
let first_item = my_list[0];