C# Collections, Lambdas, and LINQ
Feb 19 2019 · Video Course (2 hrs, 3 mins) · Beginner
Looking to have objects contain other objects? Looking to call code on demand? Want to query your collections like you would query a database? This course will cover all that, and build on what you learned in Beginning C# and Intermediate C#.
4.5/5
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Version
- C# 7, Windows 10, Visual Studio 2017
Collections and Generics
Welcome to the course! Here you'll find an overview of what you'll learn, and the importance of collections.
1
Lists are like arrays, but without the hassle of having to resize them. Let's get started with using them.
2
One of the coolest features of C# is how you can initialize an object or collection at the time you create it. Learn how to do that here.
3
Challenge time! Here, your mission is to create your first list to store names. Try it out!
4
In this episode, you'll learn the basics of working with dictionaries to store your objects based your own keys.
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Challenge time! This time, your challenge is to define your very own dictionary. Give it a shot!
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Need more collection types? This episode provides an overview of all the other collection types at your disposal.
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Here, you'll see how coding against an interface makes your code resilient to change (always a good thing).
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Generic Classes
6:41No, this isn't about ketchup brands! Learn about what it means to be generic and how to create generic classes
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Generic Methods
4:38On to generic methods: in this episode, you will find out how to make only your methods generic. Let's get started!
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Conclusion
2:07You're done with Part 1! This episode concludes the overview of collections and gives a hint at what comes next in Part 2.
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Delegates, Events, and Lambdas
Introduction
1:09Part 2 of this course covers constructs that enable you to call code on demand and react when events occurs.
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Delegates
9:21This episode introduces delegates, which are powerful tools that can notify several objects at once. Let's get started.
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Challenge time! Your first challenge in Part 2 is to create your own delegate. Have fun!
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Anonymous Delegates
3:50Introducing anonymous delegates: this episode shows you how to create a delegate without defining an object.
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Func and Action
5:20Here, you'll learn about two different types that make it easy to define your own anonymous delegate types.
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Events
5:41Events work with delegates to call code at defined points in your code. Learn how to use them in this episode.
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Lambda
6:14Not just for fraternities and sororities: Learn how to use lambdas to make your code clean and concise.
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Challenge Time! In the last challenge of Part 2, you'll write your very own lambda. Try it out!
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Conclusion
1:50You learned a lot in this part of the course! Next up, you'll move on to another key concept: LINQ.
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LINQ
Introduction
2:05In Part 3 of this course, you'll learn about the concept of LINQ and why it so powerful. Let's get started!
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In this episode, you'll find an overview of query syntax and method sytax, plus a comparison of the two of them.
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Query Syntax
10:13Let's dive deeper into query syntax: this episode gives you more information on query syntax and how to use it.
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Challenge time! In this challenge, your mission is to write a LINQ query using query syntax.
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Method Syntax
6:04Let's move on to method syntax: this episode shows you how to write LINQ queries using method syntax.
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One more challenge for the course! In this challenge, you'll rewrite your query syntax to use method syntax.
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Deferred Execution
1:22This episode lets you know about LINQ's execution model and how it affects your queries.
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What Wasn't Covered
5:56This video covers all the topics that weren't covered in the this three part course.
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Conclusion
2:14Congrats on finishing the C# Collections, Lambdas, and LINQ course! Here we'll review what you learned and give you tips on where to go next.
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