/// <summary>
/// 构造一个迭代器
/// </summary>
/// <param name="sortSet">有序集</param>
/// <param name="forward">是否向前遍历</param>
internal Enumerator(SortSet <TElement, TScore> sortSet, bool forward)
{
this.sortSet = sortSet;
this.forward = forward;
current = forward ? sortSet.header : null;
}
/// <summary>
/// 构建一个过滤器链
/// </summary>
public FilterChain()
{
stack = new Stack <int>();
filterList = new SortSet <Action <TIn, Action <TIn> >, int>();
}
