pub comptime class list<T> {
    fn len() -> num
    fn is_empty() -> bool
    fn reserve() -> T[]

    operator #() -> num

    fn get(index: num) throws -> T
    operator [](index: num) throws -> T
    fn first() -> T
    fn last() -> T

    fn add(item: T)
    fn add(items: T[])
    fn pop() -> T
    fn insert(index: num, item: T) throws
    fn remove(index: T) throws
    fn clear()

    operator []=(index: num, item: T) throws

    fn foreach(f: (item: T, index: num))
    fn map<U>(f: (item: T) -> U) -> list<U>
    fn filter(f: (item: T) -> bool) -> list<T>

    fn to_Str() -> str
}