Not allowed to globally overload operators?

[Mike Parker]

On Tuesday, 20 July 2021 at 06:20:34 UTC, Tejas wrote:
> Why isn't it working by default?
>
> Initially, I was trying to create the spaceship operator of 
> C++, but we aren't allowed to create new operators, it seems. 
> Then I just wanted to verify whether we can even overload an 
> operator globally, but even that seems to be failing, atleast 
> for me.

 From the docs:

> Operator overloading is accomplished by rewriting operators 
> whose operands are class or struct objects into calls to 
> specially named members.

https://dlang.org/spec/operatoroverloading.html

Note the word "members".

See also:

https://dlang.org/articles/rationale.html#why-no-global-operator-functions