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#

# Accepting movie recommendations

Now, it's your turn to refactor a method to accept movie recommendations.

This time, we have a list of movies to watch. We have decided to create some rules to accept them based on their director's name, release year, and reviews.

These are our rules to accept a recommendation:

* If a movie is from one of our favorite directors, accept it.
* If it's from the '60s or '70s, accept it.
* If it's from our favorite sagas, definitively accept it.
* If it's a horror film from John Carpenter, definitively accept it.
* If it has at least one bad review, we should not accept it.

We have an `if` statement inside the `AcceptMovieRecommendation` method for each rule.

By the way, there are some mistakes for you to catch below. Let's also remember how to fix some of the common mistakes we made when using LINQ.

Getting Started

LINQ Method: Where

Common LINQ Methods

Syntax & Pitfalls

Refactor with LINQ

What's New in LINQ?

Wrap-up!

Exercise: Add a Recommended Movie

Accepting movie recommendations