Extension Methods for Structs

Value types pass by value and reference types pass by reference. But interfaces are implemented by both value and reference types. How are they passed?
Source code available at: github.com/Jas...
Topics include:
C# extension methods
Value types
Immutable types
Readonly structs
Passing by ref
Generic constraints
Boxing
Interfaces on structs

[@petrusion2827]

Here's how to do it without code duplication: private static void PrivateEnnoble(ref T nameable) where T : INameable { nameable.Name = "Sir " + nameable.Name; } public static void Ennoble(this INameable nameable) { PrivateEnnoble(ref nameable); } public static void Ennoble(this ref T nameable) where T : struct, INameable { PrivateEnnoble(ref nameable); }

[@CodingTutorialsAreGo]

That's very neat - thanks!

[@davidwhite2011]

Another beautiful teaching example.

[@piurek10]

You provide a lot of good stuff. I do not understand why you have so few viewers.

[@youtischia]

Great video as all your videos are. I reckon quite a few will avoid this feature as it is too easy to get wrong. All that work just for an extension method on a struct that does not blow up.

[@CodingTutorialsAreGo]

'readonly struct' is the simple answer

[@aykcavusyan2001]

Beautiful 🤩, as always , thanks

[@danixadem]

Thanks a lot, that was really helpful.

[@CodingTutorialsAreGo]

Structs have quite a few gotchas. Any others you've spotted? Source code at: github.com/JasperKent/Extension-Boxing Remember to subscribe at kzbin.info/door/qWQzlUDdllnLmtgfSgYTCA And if you liked the video, click the 👍.

[@--Eric--]

Why don't you always pin this information to all of your excellent videos 🤔

[@CodingTutorialsAreGo]

@@--Eric-- Which information?

[@finwwwfinwww4669]

Thanks :)

[@rodrigo6459]

I know this is not related to this video… but Can you show how to work with more than 1 DbContext for code first using Repository?

[@CodingTutorialsAreGo]

Depends what you're trying to achieve with multiple DbContexts.

[@rodrigo6459]

@@CodingTutorialsAreGo one is for the database that holds the WebAPI app information, the other will be used for JWT authentication and authorization. The are both totally independent databases.

[@CodingTutorialsAreGo]

@@rodrigo6459 Got you. I'll put it on the to do list.

[@rodrigo6459]

@@CodingTutorialsAreGo so glad you are doing this in some near future! 🥹

[@djyotta]

Why not (as a better rule of thumb) just have extension methods always be of the form: public static IMyInterface MyExtensionMethod(this IMyInterface in) That way, it will work the "same" for struct/class, and also work for chaining methods.

[@CodingTutorialsAreGo]

So you're saying, just make everything immutable? That's going to have problems with transferring references from the original object to the new one.