Hands-On: LINQ in C#

LINQ is one of those C# features you use every day, but writing it well and actually understanding what’s happening under the hood is a different story. This course is a hands-on tour through every corner of LINQ in C#, built around coding exercises you solve right in your browser using method syntax. You’ll start with the pipeline mental model and the operators you reach for constantly, like Where, Select, OrderBy, GroupBy, and Join, before moving into the parts most developers never touch. Expect deep dives into deferred execution, set operations, aggregations, and the subtle rules that separate a fast pipeline from a slow one. You’ll also build your own LINQ operators from scratch, and the course closes with PLINQ for parallel workloads and Async LINQ with IAsyncEnumerable, so by the end, you’re equally comfortable shaping data in-memory, across threads, or over async streams.