Re: Operator overloading

[Don]

aarti_pl wrote:

Andrei Alexandrescu pisze:
 > We're trying to make that work. D is due for an operator overhaul.
 >
 > Andrei

Is there any chance that we get possibility to overload "raw operators", like in C++? I think that they may coexist with currently defined operator overloads with simple semantic rules, which will not allow them to work together at the same time.

I know that they may obfuscate code, but they are extremely useful when defining in D domain specific languages. For example I try to make SQL expressions work as D expressions:

string query = "SELECT * FROM a WHERE id=5;";
-->
Query query = Select(a).Where(Equals(id, 5));

* "id" is D object in second expression

This translation is quite awful and unreadable. It would be so much better to get:

Query query = Select(a).Where(id == 5);

I think that's still awful. I prefer:
Query query = mixin(SQL("SELECT * FROM a WHERE id=5"));

With implicit casts there will be perfect environment, to define DSL-s *in* D and *not* using unsafe strings.

BR
Marcin Kuszczak
(aarti_pl)