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  • From Zero to Hero: LINQ in .NET

    Everything you need to master the art of LINQ in .NET

    About This Course

    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.

    Course Curriculum

    4h 9m 10 sections
    Welcome
    00:35 Free preview
    What will you learn in this course?
    00:34 Free preview
    Who is the course for and prerequisites
    00:32 Free preview
    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

    Meet Your Instructor

    Hannes Lowette

    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.

    View all courses by Hannes Lowette

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