using System.Collections;

namespace Profiles
{
    abstract class IList<T> : IEnumerable<T>
    {
        protected T[] list;

        public int Length
        {
            get
            {
                return list.Length;
            }
        }

        public T this[int index]
        {
            get
            {
                return list[index];
            }
        }

        public IList()
        {
            this.list = new T[0];
        }

        public abstract void Add(T item);
        public abstract void Remove(T item);
        public abstract T SearchByName(string name);
        public void Clear()
        {
            list = new T[0];
        }

        public IEnumerator<T> GetEnumerator()
        {
            return ((IEnumerable<T>)list).GetEnumerator();
        }

        IEnumerator IEnumerable.GetEnumerator()
        {
            return list.GetEnumerator();
        }
    }
}