public static T MaxBy <T>(this IEnumerable <T> @this, IComparer <T> comparer = null) where T : class
{
if (comparer == null)
{
comparer = Comparer <T> .Default;
}
return(@this.MinBy(comparer.Revert()));
}
public static ICollection <T> SortLast <T>(this IEnumerable <T> @this, int first, IComparer <T> comparer = null)
{
IComparer <T> IntComparer = comparer ?? Comparer <T> .Default;
return(@this.SortFirst(first, IntComparer.Revert()));
}
