start:
    goto end

step_0:
    remember vec = []

    do vec.push(42)

    goto end

step_1:
    remember vec = [42]

    say vec.pop()
    say vec

    goto end

step_2:
    remember vec = [42]

    say vec.is_empty()

    do vec = []

    say vec.is_empty()

    goto end

step_3:
    remember vec = [42]

    do vec.insert_at(0, 24)

    say vec.length()

    say vec[0]

    do vec.remove_at(0)

    say vec[0]

    goto end

step_4:
    remember vec = []

    do vec.insert_at(-1, 42)

    goto end

step_5:
    remember vec = []

    do vec.insert_at(1, 42)

    goto end

step_6:
    remember vec = []

    do vec.remove_at(-1)

    goto end

step_7:
    remember vec = []

    do vec.remove_at(1)

    goto end

step_8:
    remember vec = []

    say vec.join()

    goto end

step_9:
    do vec = []

    say vec.join(",")

    goto end

step_10:
    do vec = [1]

    say vec.join(",")

    goto end

step_11:
    do vec = [1, 2]

    say vec.join(",")

    goto end

array_index_of_0:
    do vec = [1, 2]

    say vec.index_of(3) // -1

    goto end

array_index_of_1:
    do vec = [1, 2]

    say vec.index_of(2) // 1

    goto end

array_index_of_2:
    do vec = [1, 2, [1, 2]]

    say vec.index_of([1, 2]) // 2

    goto end

array_find_0:
    do vec = [1, 2]

    say vec.find(3) // NULL

    goto end

array_find_1:
    do vec = [1, 2, 3, 4, 5, 2]

    say vec.find(2) // [2, 2]

    goto end

array_find_2:
    do vec = [1, {"obj":"42"}, 4 / 2, [1, 2]]

    say vec.find({"obj":"42"}) // [{"obj":"42"}]

    goto end

array_map:
    say [1, 2].map((x) {
        return x + 1
    })
    goto end

array_reduce:
    do func = (acc, val) {
        return acc + val
    }

    say [1, 2, 3].reduce(4, func)

    goto end

array_filter:
    say [1, 2, 3, 4, 5].filter((x) {
        return x % 2 == 1
    })

    goto end

array_map_index:
    say [1, 2, 3, 4, 5].map((x, index) {
        return index
    })

array_filter_index:
    say [34, 232].filter((x, index) {
        return 1
    })

array_reduce_index:
    say [1, 2, 3].reduce(0, (x, index) {
        return x + index
    })