using System.Collections.Generic;

namespace Chernobyl.Chain
{
    /// <summary>
    /// Used for types that can be formed into a forward unidirectional chain. 
    /// The chain has different behavior depending on its structure and the links
    /// that compose it. It is similar to a linked list except their is no overall 
    /// structure keeping everything together (i.e. the <see cref="LinkedList{T}"/>)
    /// Additionally, although it can be used for storage, it is purpose is more 
    /// suited to algorithmic uses.
    /// </summary>
    /// <typeparam name="T">The type of the next link in the chain.</typeparam>
    public interface IForwardLink<T>
    {
        /// <summary>
        /// The next object in the chain or null if the chain ends at this link.
        /// </summary>
        T Forward { get; }
    }
}