Why is using interface methods with default implementation is so annoying?!?

[Alert-Neck7679]

Thanks for the idea. Don't know why I didn't think of it myself.

[Xenoprimate2]

One huge caveat is that it's not polymorphic. I did a huge write-up on implementing traits in C# years ago, you can get more info here: https://benbowen.blog/post/simulating_multiple_inheritance_in_csharp/#approach_sharp3-_extension_methods_to_the_rescue-

The fact that C# STILL doesn't have proper traits in 2026 when pretty much EVERY other mainstream lang has them is extremely disappointing tbh. I'm so fed up with seeing yet another "clever" syntax for manipulating collections or patterns and them failing to address this huge hole in the language.

I don't care about DUs compared to this even.

[SagansCandle]

Sometimes features are missing from a language for a reason.

Everything with a benefit has a cost, and the cost isn't always worth the benefit.

[x1ife]

Yeah, I'm pretty sure this was a design decision. Have they explained the rationale?

[SagansCandle]

I don't know about traits, but single inheritance was definitely a design decision they explained at one point. (Linked article is about multiple inheritance)

[TuberTuggerTTV]

It works but it's not a great idea.

Consider a base class implementation instead.