No household is perfect

[Tobias Pankrath]

On Tuesday, 3 December 2013 at 12:41:40 UTC, Russel Winder wrote:
> On Tue, 2013-12-03 at 13:29 +0100, Tobias Pankrath wrote:
> […]
>> Does scala have arbitrary operators like Haskell? Looks 
>> useless in D. If you have an operator '+' that should not be 
>> pronounced 'plus' you are doing it wrong.
>
> Yes.
>
> 	a + b
>
> could be set union, logic and, string concatenation. The + is 
> just a
> message to the LHS object, it determines what to do. This is 
> the whole
> basis for DSLs.


I really have no problem with operator overloading, but set union 
(∪), logic and (∧) and string concatenation (∘) do have well 
defined and commonly used symbols.

I would not argue against adding these to the language via a 
general mechanism and indeed then it might be useful to have a 
name for a user defined wtf-operator ?!?!. But if you overload an 
operator (+) it should be some kind of addition.