9 2.5 pear b
2.5
x 7 3 1
<5> <hi> <Point(x: 1, y: 2)> <[1, 2]>
["ab", "ab", "ab"] [1.5, 1.5] [7, 7]
20 1 Stack[int](items: [10])
Stack[str](items: ["ann", "bob"]) 2
1
Pair[str, int](first: "age", second: 31) Pair[int, str](first: 31, second: "age") 32
Stack[Pair[int, str]](items: [Pair[int, str](first: 1, second: "one")])