New LINQ methods in C# 13: Index, CountBy, AggregateBy
Read OriginalThis technical article details the new LINQ methods (Index, CountBy, and AggregateBy) planned for C# 13 as part of the .NET 9 release. It provides practical code examples using a sample dataset to demonstrate how each method works for indexing elements, grouping and counting by keys, and performing aggregations within groups.
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