///
/// <summary> * return a matching element from a collection of IMatches </summary>
/// * @param <a> the data type
/// * </param>
/// * <param name="c"> the collection to search </param>
/// * <param name="obj"> the search key for matches </param>
/// * <returns> Vector of matching a </returns>
///
public static List <IMatches> getMatches <a, T1>(ICollection <T1> c, a obj) where T1 : IMatches
{
if (c == null)
{
return(null);
}
IEnumerator <T1> it = c.GetEnumerator();
List <IMatches> v = new List <IMatches>();
while (it.MoveNext())
{
IMatches m = it.Current;
if (m.matches(obj))
{
v.Add(m);
}
}
return(v.Count == 0 ? null : v);
}
///
/// <summary> * return a matching element from a collection of Imatches </summary>
/// * @param <a> the data type
/// * </param>
/// * <param name="c"> the collection to search </param>
/// * <param name="obj"> the search key for matches </param>
/// * <param name="iSkip"> which one to grab, may be negative in which case we count -1=last, -2=second last... </param>
/// * <returns> the matching <a> </returns>
///
public static IMatches getMatch <a, T1>(ICollection <T1> c, a obj, int iSkip) where T1 : IMatches
{
int iSkipLocal = iSkip;
if (c == null)
{
return(null);
}
if (iSkipLocal < 0)
{
List <IMatches> v = getMatches(c, obj);
if (v == null)
{
return(null);
}
iSkipLocal = v.Count + iSkipLocal;
if (iSkipLocal < 0)
{
return(null);
}
return(v[iSkipLocal]);
}
IEnumerator <T1> it = c.GetEnumerator();
while (it.MoveNext())
{
IMatches m = it.Current;
if (m.matches(obj) && iSkipLocal-- <= 0)
{
return(m);
}
}
return(null);
}
