Am I evil for this?

[solidstate1991]

On Saturday, 15 October 2022 at 01:11:02 UTC, rassoc wrote:
> Raku (formerly Perl 6) is very interesting in that regard. They 
> not only allow you to define custom operators, but also specify 
> their precedence and associativity right in the function 
> signature.
>
> sub prefix:<Σ>(...)
> sub infix:<!!>(...) is tighter(&infix:<+>)
> sub infix:<§>(...) is assoc<right>
> sub circumfix:<[ ]>(...)
>
> And they go even further and allow you to combine these to form 
> meta operators.
>
>> my @a = 1, 2, 3
>> @a Z @a    # zip infix operator
>   ((1 1) (2 2) (3 3))
>> @a Z+ @a
>   (2 4 6)    # zip combined with +
>
> If only the language wasn't dog slow. :)

At least Σ is perfectly doable in D thanks to its unicode support 
(if I remember correctly)

```d
public double Σ(...) {
     //code goes here
}
```

Languages with custom operators will compile slow and will run 
even slower if they're scripting languages. My alternative for D 
would be just expand upon the currently existing number of 
operators with unicode characters, but also give them some 
alternative way to access them (e.g. having both an `⋃` operator 
and an `__opUnion` substitute), so people won't get a heart 
attack if they don't know how to get them on their keyboards.