struct Node {
    str name
    ptr[Node] next
    []str tags
}

fn build(int n) -> []str {
    []str out
    out.resize(n)
    return out
}

fn firstLong([]str words) -> str {
    for w in words {
        tmp := w + "!"
        if w.len > 3 {
            return tmp
        }
    }
    return "none"
}

fn loops() -> int {
    count := 0
    for i in 0..10 {
        s := "item " + str(i)
        if i == 2 {
            continue
        }
        if i == 6 {
            break
        }
        count += s.len
    }
    while true {
        t := "x" + "y"
        if t.len == 2 {
            break
        }
    }
    return count
}

fn deferred() -> str {
    log := "start"
    defer print("deferred ran, log was:", log)
    log = log + " middle"
    names := ["a", "b"]
    defer print("names:", names)
    return log + " end"
}

fn main([]str args) {
    print(args.len > 0)
    print(firstLong(["hi", "hello", "hey"]))
    print(firstLong(["a"]))
    print(loops())
    print(deferred())

    s := "ab"
    s = s + s
    s = s
    print(s)

    list := ["one", "two", "three"]
    for w in list {
        if w == "two" {
            list.push("four")
        }
    }
    print(list)
    last := list.pop()
    print(last, list)

    head := new(Node(name: "first", tags: ["t1"]))
    head.next = new(Node(name: "second"))
    print(head.name, head.next.name, head.tags)
    n := head
    while n != null {
        print("node", n.name)
        n = n.next
    }
    free(head.next)
    free(head)

    []str words
    for i in 0..3 {
        words.push("w" + str(i))
    }
    words.clear()
    words.resize(2)
    print(words, words.len)
    print([1, 2, 3].slice(1, 3), "abc".bytes())
    x := ["keep"]
    y := x
    x[0] = "changed"
    print(x, y)
}