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checkmark change #45469

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100 changes: 50 additions & 50 deletions docs/csharp/linq/get-started/introduction-to-linq-queries.md
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Expand Up @@ -107,56 +107,56 @@ The following table classifies each standard query operator method according to

| Standard query operator | Return type | Immediate execution | Deferred streaming execution | Deferred nonstreaming execution |
|-----------------------------------------------------|-------------|---------------------|------------------------------|----------------------------------|
| <xref:System.Linq.Enumerable.Aggregate%2A> | `TSource` | X | | |
| <xref:System.Linq.Enumerable.All%2A> | <xref:System.Boolean> | X | | |
| <xref:System.Linq.Enumerable.Any%2A> | <xref:System.Boolean> | X | | |
| <xref:System.Linq.Enumerable.AsEnumerable%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | X | |
| <xref:System.Linq.Enumerable.Average%2A> | Single numeric value | X | | |
| <xref:System.Linq.Enumerable.Cast%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | X | |
| <xref:System.Linq.Enumerable.Concat%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | X | |
| <xref:System.Linq.Enumerable.Contains%2A> | <xref:System.Boolean> | X | | |
| <xref:System.Linq.Enumerable.Count%2A> | <xref:System.Int32> | X | | |
| <xref:System.Linq.Enumerable.DefaultIfEmpty%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | X | |
| <xref:System.Linq.Enumerable.Distinct%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | X | |
| <xref:System.Linq.Enumerable.ElementAt%2A> | `TSource` | X | | |
| <xref:System.Linq.Enumerable.ElementAtOrDefault%2A> | `TSource?` | X | | |
| <xref:System.Linq.Enumerable.Empty%2A> | <xref:System.Collections.Generic.IEnumerable%601> | X | | |
| <xref:System.Linq.Enumerable.Except%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | X | X |
| <xref:System.Linq.Enumerable.First%2A> | `TSource` | X | | |
| <xref:System.Linq.Enumerable.FirstOrDefault%2A> | `TSource?` | X | | |
| <xref:System.Linq.Enumerable.GroupBy%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | | X |
| <xref:System.Linq.Enumerable.GroupJoin%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | X | X |
| <xref:System.Linq.Enumerable.Intersect%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | X | X |
| <xref:System.Linq.Enumerable.Join%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | X | X |
| <xref:System.Linq.Enumerable.Last%2A> | `TSource` | X | | |
| <xref:System.Linq.Enumerable.LastOrDefault%2A> | `TSource?` | X | | |
| <xref:System.Linq.Enumerable.LongCount%2A> | <xref:System.Int64> | X | | |
| <xref:System.Linq.Enumerable.Max%2A> | Single numeric value, `TSource`, or `TResult?` | X | | |
| <xref:System.Linq.Enumerable.Min%2A> | Single numeric value, `TSource`, or `TResult?` | X | | |
| <xref:System.Linq.Enumerable.OfType%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | X | |
| <xref:System.Linq.Enumerable.OrderBy%2A> | <xref:System.Linq.IOrderedEnumerable%601> | | | X |
| <xref:System.Linq.Enumerable.OrderByDescending%2A> | <xref:System.Linq.IOrderedEnumerable%601> | | | X |
| <xref:System.Linq.Enumerable.Range%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | X | |
| <xref:System.Linq.Enumerable.Repeat%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | X | |
| <xref:System.Linq.Enumerable.Reverse%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | | X |
| <xref:System.Linq.Enumerable.Select%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | X | |
| <xref:System.Linq.Enumerable.SelectMany%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | X | |
| <xref:System.Linq.Enumerable.SequenceEqual%2A> | <xref:System.Boolean> | X | | |
| <xref:System.Linq.Enumerable.Single%2A> | `TSource` | X | | |
| <xref:System.Linq.Enumerable.SingleOrDefault%2A> | `TSource?` | X | | |
| <xref:System.Linq.Enumerable.Skip%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | X | |
| <xref:System.Linq.Enumerable.SkipWhile%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | X | |
| <xref:System.Linq.Enumerable.Sum%2A> | Single numeric value | X | | |
| <xref:System.Linq.Enumerable.Take%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | X | |
| <xref:System.Linq.Enumerable.TakeWhile%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | X | |
| <xref:System.Linq.Enumerable.ThenBy%2A> | <xref:System.Linq.IOrderedEnumerable%601> | | | X |
| <xref:System.Linq.Enumerable.ThenByDescending%2A> | <xref:System.Linq.IOrderedEnumerable%601> | | | X |
| <xref:System.Linq.Enumerable.ToArray%2A> | `TSource[]` array | X | | |
| <xref:System.Linq.Enumerable.ToDictionary%2A> | <xref:System.Collections.Generic.Dictionary%602> | X | | |
| <xref:System.Linq.Enumerable.ToList%2A> | <xref:System.Collections.Generic.IList%601> | X | | |
| <xref:System.Linq.Enumerable.ToLookup%2A> | <xref:System.Linq.ILookup%602> | X | | |
| <xref:System.Linq.Enumerable.Union%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | X | |
| <xref:System.Linq.Enumerable.Where%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | X | |
| <xref:System.Linq.Enumerable.Aggregate%2A> | `TSource` | ✓ | | |
| <xref:System.Linq.Enumerable.All%2A> | <xref:System.Boolean> | ✓ | | |
| <xref:System.Linq.Enumerable.Any%2A> | <xref:System.Boolean> | ✓ | | |
| <xref:System.Linq.Enumerable.AsEnumerable%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | ✓ | |
| <xref:System.Linq.Enumerable.Average%2A> | Single numeric value | ✓ | | |
| <xref:System.Linq.Enumerable.Cast%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | ✓ | |
| <xref:System.Linq.Enumerable.Concat%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | ✓ | |
| <xref:System.Linq.Enumerable.Contains%2A> | <xref:System.Boolean> | ✓ | | |
| <xref:System.Linq.Enumerable.Count%2A> | <xref:System.Int32> | ✓ | | |
| <xref:System.Linq.Enumerable.DefaultIfEmpty%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | ✓ | |
| <xref:System.Linq.Enumerable.Distinct%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | ✓ | |
| <xref:System.Linq.Enumerable.ElementAt%2A> | `TSource` | ✓ | | |
| <xref:System.Linq.Enumerable.ElementAtOrDefault%2A> | `TSource?` | ✓ | | |
| <xref:System.Linq.Enumerable.Empty%2A> | <xref:System.Collections.Generic.IEnumerable%601> | ✓ | | |
| <xref:System.Linq.Enumerable.Except%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | ✓ | ✓ |
| <xref:System.Linq.Enumerable.First%2A> | `TSource` | ✓ | | |
| <xref:System.Linq.Enumerable.FirstOrDefault%2A> | `TSource?` | ✓ | | |
| <xref:System.Linq.Enumerable.GroupBy%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | | ✓ |
| <xref:System.Linq.Enumerable.GroupJoin%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | ✓ | ✓ |
| <xref:System.Linq.Enumerable.Intersect%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | ✓ | ✓ |
| <xref:System.Linq.Enumerable.Join%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | ✓ | ✓ |
| <xref:System.Linq.Enumerable.Last%2A> | `TSource` | ✓ | | |
| <xref:System.Linq.Enumerable.LastOrDefault%2A> | `TSource?` | ✓ | | |
| <xref:System.Linq.Enumerable.LongCount%2A> | <xref:System.Int64> | ✓ | | |
| <xref:System.Linq.Enumerable.Max%2A> | Single numeric value, `TSource`, or `TResult?` | ✓ | | |
| <xref:System.Linq.Enumerable.Min%2A> | Single numeric value, `TSource`, or `TResult?` | ✓ | | |
| <xref:System.Linq.Enumerable.OfType%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | ✓ | |
| <xref:System.Linq.Enumerable.OrderBy%2A> | <xref:System.Linq.IOrderedEnumerable%601> | | | ✓ |
| <xref:System.Linq.Enumerable.OrderByDescending%2A> | <xref:System.Linq.IOrderedEnumerable%601> | | | ✓ |
| <xref:System.Linq.Enumerable.Range%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | ✓ | |
| <xref:System.Linq.Enumerable.Repeat%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | ✓ | |
| <xref:System.Linq.Enumerable.Reverse%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | | ✓ |
| <xref:System.Linq.Enumerable.Select%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | ✓ | |
| <xref:System.Linq.Enumerable.SelectMany%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | ✓ | |
| <xref:System.Linq.Enumerable.SequenceEqual%2A> | <xref:System.Boolean> | ✓ | | |
| <xref:System.Linq.Enumerable.Single%2A> | `TSource` | ✓ | | |
| <xref:System.Linq.Enumerable.SingleOrDefault%2A> | `TSource?` | ✓ | | |
| <xref:System.Linq.Enumerable.Skip%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | ✓ | |
| <xref:System.Linq.Enumerable.SkipWhile%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | ✓ | |
| <xref:System.Linq.Enumerable.Sum%2A> | Single numeric value | ✓ | | |
| <xref:System.Linq.Enumerable.Take%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | ✓ | |
| <xref:System.Linq.Enumerable.TakeWhile%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | ✓ | |
| <xref:System.Linq.Enumerable.ThenBy%2A> | <xref:System.Linq.IOrderedEnumerable%601> | | | ✓ |
| <xref:System.Linq.Enumerable.ThenByDescending%2A> | <xref:System.Linq.IOrderedEnumerable%601> | | | ✓ |
| <xref:System.Linq.Enumerable.ToArray%2A> | `TSource[]` array | ✓ | | |
| <xref:System.Linq.Enumerable.ToDictionary%2A> | <xref:System.Collections.Generic.Dictionary%602> | ✓ | | |
| <xref:System.Linq.Enumerable.ToList%2A> | <xref:System.Collections.Generic.IList%601> | ✓ | | |
| <xref:System.Linq.Enumerable.ToLookup%2A> | <xref:System.Linq.ILookup%602> | ✓ | | |
| <xref:System.Linq.Enumerable.Union%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | ✓ | |
| <xref:System.Linq.Enumerable.Where%2A> | <xref:System.Collections.Generic.IEnumerable%601> | | ✓ | |

## LINQ to objects

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