public static HeuristicSearchOrderBy <TResult, TStep> OrderByDescending <TResult, TKey, TStep>(this HeuristicSearchBase <TResult, TStep> source, Func <TResult, TKey> keySelector, IComparer <TKey> comparer)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
if (keySelector == null)
{
throw new ArgumentNullException(nameof(keySelector));
}
return(new HeuristicSearchOrderBy <TResult, TStep>(source, HeuristicSearch.CreateComparer <TResult, TKey, TStep>(keySelector, comparer, true)));
}
public HeuristicSearchOrderBy <TResult, TStep> CreateOrderedEnumerable <TKey>(Func <TResult, TKey> keySelector, IComparer <TKey> comparer, bool descending)
{
if (keySelector == null)
{
throw new ArgumentNullException(nameof(keySelector));
}
var comparer1 = _nodeComparer;
var comparer2 = HeuristicSearch.CreateComparer <TResult, TKey, TStep>(keySelector, comparer, descending);
_nodeComparer = new CombinedComparer <TResult, TStep>(comparer1, comparer2);
return(this);
}