public static System.Linq.ILookup <TKey, TSource> ToLookup <TSource, TKey>(this ReadOnlyMemory <TSource> source, Func <TSource, TKey> keySelector, IEqualityComparer <TKey> comparer = null)
{
var aggregate = new ToLookup <TSource, TKey>(comparer, keySelector);
MemoryNode.ProcessMemory(source, ref aggregate);
return(aggregate.GetResult());
}
public static System.Linq.ILookup <TKey, TElement> ToLookup <TSource, TKey, TElement>(this TSource[] source, Func <TSource, TKey> keySelector, Func <TSource, TElement> elementSelector, IEqualityComparer <TKey> comparer = null)
{
var aggregate = new ToLookup <TSource, TKey, TElement>(comparer, keySelector, elementSelector);
ArrayNode.ProcessArray(source, ref aggregate);
return(aggregate.GetResult());
}
public static System.Linq.ILookup <TKey, TSource> ToLookup <TSource, TKey>(this List <TSource> source, Func <TSource, TKey> keySelector, IEqualityComparer <TKey> comparer = null)
{
var aggregate = new ToLookup <TSource, TKey>(comparer, keySelector);
ListSegmentNode.ProcessList(source, ref aggregate);
return(aggregate.GetResult());
}