Enumerable.ToLookup Method
.NET Framework (current version)
Creates a generic Lookup<'TKey, 'TElement> from an IEnumerable<'T>.
Assembly: System.Core (in System.Core.dll)
| Name | Description | |
|---|---|---|
![]() ![]() | ToLookup<'TSource, 'TKey>(IEnumerable<'TSource>, Func<'TSource, 'TKey>) | Creates a Lookup<'TKey, 'TElement> from an IEnumerable<'T> according to a specified key selector function. |
![]() ![]() | ToLookup<'TSource, 'TKey>(IEnumerable<'TSource>, Func<'TSource, 'TKey>, IEqualityComparer<'TKey>) | Creates a Lookup<'TKey, 'TElement> from an IEnumerable<'T> according to a specified key selector function and key comparer. |
![]() ![]() | ToLookup<'TSource, 'TKey, 'TElement>(IEnumerable<'TSource>, Func<'TSource, 'TKey>, Func<'TSource, 'TElement>) | Creates a Lookup<'TKey, 'TElement> from an IEnumerable<'T> according to specified key selector and element selector functions. |
![]() ![]() | ToLookup<'TSource, 'TKey, 'TElement>(IEnumerable<'TSource>, Func<'TSource, 'TKey>, Func<'TSource, 'TElement>, IEqualityComparer<'TKey>) | Creates a Lookup<'TKey, 'TElement> from an IEnumerable<'T> according to a specified key selector function, a comparer and an element selector function. |
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