What is Functional C#?

You may have always defined classes encapsulating state and exposing behavior as public methods.
You may have always implemented polymorphism via class derivation and interface implementation.
Traditional object-oriented design is verbose and often impractical in modern applications.
Functional design separates behavior from state definition, making the design of types much more manageable.
Records come in handy to define state alone.
Look how short this version is.
The behavior should still exist, and it comes in the form of independent delegates.
There, we see pattern matching as the most powerful modeling tool for behavior.
That is a long story to tell in one short video.
Subscribe and follow the link to the long video if you wish to dive into the wonderful world of functional programming with C#.
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👨 About Me 👨
Hi, I’m Zoran, I have more than 20 years of experience as a software developer, architect, team lead, and more. I have been programming in C# since its inception in the early 2000s. Since 2017 I have started publishing professional video courses at Pluralsight and Udemy and by this point, there are over 100 hours of the highest-quality videos you can watch on those platforms. On my TH-cam channel, you can find shorter video forms focused on clarifying practical issues in coding, design, and architecture of .NET applications.❤️
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[@Robert-yw5ms]

After four years of writing c# this video convinced me to use the delegate keyword for the first time. Much nicer than declaring a func parameter using the func keyword.

[@prasadhkumarjadhav4066]

Would love to see a course like.this from you

[@tommasochiti4237]

nothing presented here is functional, u just turned a few classes into records

[@zoran-horvat]

Oh, really? And that function below is also not functional?

[@tommasochiti4237]

@@zoran-horvat Correct. All you have here is two records in a OOP style hierarchy and a half made function. Where’s the FP side in this?

[@zoran-horvat]

@@tommasochiti4237 How do you write these same things in a functional design?

[@luc9volts]

​@@zoran-horvatBingo ! 😁😁

[@tommasochiti4237]

@@zoran-horvat Uhhh.. use functions that take structs as arguments and return new structs?