Everything you need to master the art of LINQ in .NET
C# 3 added one of the most revolutionary features of any programming language, and that's none other than LINQ. LINQ has been a flagship feature of C#. Data querying is a fundamental feature of any programming language, but not every language gives developers the tools to do it in an elegant way that reads naturally and is extremely powerful. Even though most developers will get introduced to LINQ early in their C# journey, only a few know how to use it effectively and get the most out of it with the least amount of code. With heavy Microsoft investment, LINQ is improving in every .NET version with better performance and adding new features. In this course, Hannes Lowette will teach you everything there is to know about LINQ and equip you with the knowledge to tackle and querying tasks, whether big or small.
Curriculum
Welcome
00:35
What will you learn in this course?
00:34
Who is the course for and prerequisites
00:32
Why do we have LINQ?
05:36
A language for querying data
02:02
A first LINQ example
05:21
Why would you want to use LINQ?
03:34
Section recap
00:37
Introduction to our demo solution
03:05
Using a simple where clause
04:29
Refactoring statements into functions
03:45
Chaining multiple where clauses
03:18
Ordering data
04:00
Multi-level ordering
03:24
Using a custom comparer to order
02:56
Section recap
00:54
What is deferred execution in LINQ?
09:33
Retrieving all results
09:48
Retrieving a single item
10:40
Projecting the data to another shape
11:22
Section recap
00:43
Introduction to getting partial results
02:57
Splitting results into chunks
06:20
Using Skip, Take and TakeWhile to retrieve a specific result
07:30
Dividing results into logical parts with GroupBy
07:30
Section recap
00:55
Introduction
02:00
Removing duplicates
03:10
Checking for a single item
03:09
Verifying all items
04:10
Using aggregate functions
09:51
Checking if 2 sequences are equal
02:51
Section recap
00:39
Introduction
01:26
Concatenate two results
01:50
Set operations on queries with the same type
10:02
Exploding a subquery with SelectMany
07:00
Join operations between 2 results
25:25
Section recap
00:42
Introduction
01:02
IQueryable vs IEnumerable
04:38
What can we write LINQ against?
03:48
Making some IEnumerable methods ourselves
09:07
IQueryable behind the scenes
10:47
Section recap
01:12
Why would we want to parallelize our queries?
02:26
Introduction to PLINQ
14:19
Things to consider when using PLINQ
06:47
Potential pitfalls
07:44
Section recap
00:58
Conclusion
01:24
Course Info
Level:
From Zero to Hero
Duration:
4h 9m
About the Author
Hannes Lowette
With 20 years in .NET development, Hannes has always been passionate about performance, databases, distributed systems and large-scale applications. When it comes to architecture, his opinions have become a bit more nuanced, and the "it depends" card, however boring, gets played in many technical discussions. Hannes has always had a passion for sharing knowledge. It doesn't matter whether it is one-to-one while pair programming, on a conference stage giving a talk or when he's helping people succeed in their careers as a coach. In his free time, when he's not building LEGO® castles with his three kids, he likes to stream his guitar building on Twitch and spends too much time playing online chess and doing all-around geeky stuff. You can always lure him into a chat over a glass of great Whisky.
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