Summary
Creates a lookup from a sequence according to a specified key selector function
that returns a sequence of keys.
Syntax
public static ILookup<TKey, TSource> ToLookupMany<TSource, TKey>(this IEnumerable<TSource> source, Func<TSource, IEnumerable<TKey>> keySelector)
Type Parameters
| Name |
Description |
| TSource |
The type of the source. |
| TKey |
The type of the key. |
Parameters
| Name |
Type |
Description |
| source |
IEnumerable<TSource> |
The source. |
| keySelector |
Func<TSource, IEnumerable<TKey>> |
The key selector. |
Return Value
| Type |
Description |
| ILookup<TKey, TSource> |
A lookup. |
