Worst ideas/features in programming languages?

[Paul Backus]

On Friday, 5 November 2021 at 21:54:27 UTC, victoroak wrote:
> On Friday, 5 November 2021 at 21:46:35 UTC, H. S. Teoh wrote:
>>
>> @safe does not mean enforcing type constraints.  It means 
>> *memory* safety.  The above code exhibits no memory unsafety, 
>> even though constraints are violated and the output is, 
>> ostensibly, wrong because of broken constraints.
>>
>>
>
> `.init` was not mentioned as breaking `@safe` just as a bad 
> feature and I was answering why I think it is a bad feature.
>
> But the presence of both `.init` and @safe `void` 
> initialization makes it way harder to write correct `@trusted` 
> code that depends on some constraints because you can't really 
> enforce them.

...which is one of the reasons we need @system variables:

https://github.com/dlang/DIPs/blob/master/DIPs/DIP1035.md