Gain insights into LINQ in C#, learn about lambda expressions, explore common LINQ methods, avoid pitfalls, and refactor code to be more expressive and efficient.

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LINQ is the best feature in C#. If you’re interested in writing more expressive code to work with collections, this course is for you. In this course, you will learn about what LINQ is and what lambda expressions are. You will learn the most common LINQ methods and some common pitfalls to avoid when using LINQ. You will also write your first methods using LINQ and use LINQ to refactor some common constructs.

Getting Started with LINQ in C#

## How to find the unique elements of a collection

To find unique ratings in our catalog, we used the `Distinct` method on a list of ratings. It returned only the distinct ratings, but not the movies that received those unique ratings.

# How to find the unique elements of a collection

To find unique ratings in our catalog, we used the `Distinct` method on a list of ratings. It returned only the distinct ratings, but not the movies that received those unique ratings.

Learn how to find the unique elements of a collection.

Getting Started

LINQ Method: Where

Common LINQ Methods

Syntax & Pitfalls

Refactor with LINQ

What's New in LINQ?

Wrap-up!

DistinctBy Method

How to find the unique elements of a collection