/// <summary>
/// 通过[主类ID]二分快速查表
/// </summary>
/// <param name="mainID">主类ID</param>
/// <returns></returns>
public static IEnumerable <RankTypeDataBase> Query(this List <RankTypeDataBase> sorted, uint mainID)
{
var key = new RankTypeDataBase()
{
mainID = mainID
};
var comparer = new Comparer1();
var from = sorted.BinarySearch(key, comparer);
if (from < 0)
{
yield break;
}
var to = from + 1;
while (from > 0 && comparer.Compare(key, sorted[from - 1]) == 0)
{
from--;
}
while (to < sorted.Count && comparer.Compare(key, sorted[to]) == 0)
{
to++;
}
for (var i = from; i < to; i++)
{
yield return(sorted[i]);
}
}
/// <summary>
/// 通过[主类ID + 子类ID]二分快速查表
/// </summary>
/// <param name="mainID">主类ID</param>
/// <param name="childID">子类ID</param>
/// <returns></returns>
public static RankTypeDataBase Query(this List <RankTypeDataBase> sorted, uint mainID, uint childID)
{
var key = new RankTypeDataBase()
{
mainID = mainID, childID = childID
};
var comparer = new Comparer2();
var index = sorted.BinarySearch(key, comparer);
return(index >= 0 ? sorted[index] : default(RankTypeDataBase));
}