Worst ideas/features in programming languages?

[12345swordy]

On Monday, 11 October 2021 at 21:40:08 UTC, jmh530 wrote:
> On Monday, 11 October 2021 at 21:32:52 UTC, 12345swordy wrote:
>> [snip]
>> Before you ask, No, using string mixin or templates for 
>> implementing interfaces  is NOT considered to be a default 
>> interface implementation.
>> See here: 
>> https://github.com/dotnet/csharplang/blob/main/proposals/csharp-8.0/default-interface-methods.md
>>
>>
>> - Alex
>
> Interfaces can have final methods, you just can't overwrite 
> them.

Did you not read the file that I linked?

- Alex