Enumerable.GroupBy Method
Groups the elements of a sequence.
Assembly: System.Core (in System.Core.dll)
| Name | Description | |
|---|---|---|
![]() ![]() | GroupBy<'TSource, 'TKey>(IEnumerable<'TSource>, Func<'TSource, 'TKey>) | Groups the elements of a sequence according to a specified key selector function. |
![]() ![]() | GroupBy<'TSource, 'TKey>(IEnumerable<'TSource>, Func<'TSource, 'TKey>, IEqualityComparer<'TKey>) | Groups the elements of a sequence according to a specified key selector function and compares the keys by using a specified comparer. |
![]() ![]() | GroupBy<'TSource, 'TKey, 'TElement>(IEnumerable<'TSource>, Func<'TSource, 'TKey>, Func<'TSource, 'TElement>) | Groups the elements of a sequence according to a specified key selector function and projects the elements for each group by using a specified function. |
![]() ![]() | GroupBy<'TSource, 'TKey, 'TElement>(IEnumerable<'TSource>, Func<'TSource, 'TKey>, Func<'TSource, 'TElement>, IEqualityComparer<'TKey>) | Groups the elements of a sequence according to a key selector function. The keys are compared by using a comparer and each group's elements are projected by using a specified function. |
![]() ![]() | GroupBy<'TSource, 'TKey, 'TResult>(IEnumerable<'TSource>, Func<'TSource, 'TKey>, Func<'TKey, IEnumerable<'TSource>, 'TResult>) | Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. |
![]() ![]() | GroupBy<'TSource, 'TKey, 'TResult>(IEnumerable<'TSource>, Func<'TSource, 'TKey>, Func<'TKey, IEnumerable<'TSource>, 'TResult>, IEqualityComparer<'TKey>) | Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. The keys are compared by using a specified comparer. |
![]() ![]() | GroupBy<'TSource, 'TKey, 'TElement, 'TResult>(IEnumerable<'TSource>, Func<'TSource, 'TKey>, Func<'TSource, 'TElement>, Func<'TKey, IEnumerable<'TElement>, 'TResult>) | Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. The elements of each group are projected by using a specified function. |
![]() ![]() | GroupBy<'TSource, 'TKey, 'TElement, 'TResult>(IEnumerable<'TSource>, Func<'TSource, 'TKey>, Func<'TSource, 'TElement>, Func<'TKey, IEnumerable<'TElement>, 'TResult>, IEqualityComparer<'TKey>) | Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. Key values are compared by using a specified comparer, and the elements of each group are projected by using a specified function. |

