/// <summary>
/// 根据空白字符分隔字符串
/// </summary>
/// <param name="s"></param>
/// <returns></returns>
/// <exception cref="ArgumentNullException">参数为 null</exception>
public static string[] SplitByWhiteSpace(this string s)
{
int index = 0;
List <string> result = new List <string>();
while (true)
{
ValueSet <int, int> tuple = s.IndexOfWhiteSpace(index, s.Length - index);
if (tuple.IsNotNull())
{
int length = tuple.Value1 - index;
if (length > 0)
{
result.Add(s.Substring(index, length));
}
index = tuple.Value1 + tuple.Value2;
}
else
{
int length = s.Length - index;
if (length > 0)
{
result.Add(s.Substring(index, length));
}
break;
}
}
return(result.ToArray());
}