public bool Equals(MList <T> first, MList <T> second)
{
return(first.Match(
empty: () => second.Match(
empty: () => true,
list: (x, xs) => false),
list: (x, xs) => second.Match(
empty: () => false,
list: (y, ys) => x.Equals(y) && Equals(xs, ys))));
}
public int GetHashCode(MList <T> mlist)
{
return(mlist.Match(
empty: () => typeof(T).GetHashCode(),
list: (x, xs) => x.GetHashCode() + 31 * GetHashCode(xs)));
}