named arguments (C++) - Something D could learn from

Steven Schveighoffer schveiguy at
Fri Dec 14 21:03:23 UTC 2018

On 12/14/18 3:13 PM, bauss wrote:
> In C++ you can achieve named arguments using templates and operator 
> overload:
> It's sad that D is still against having named arguments, but it's 
> possible in something that D thrives to be better than.
> I assume this is not possible to port to D because D doesn't do operator 
> overload in the same way C++ does, correct?

Bleh, C++ is so ugly. I can't see how D can't do better.

operator overloading works fine in D, just like it does in the given 

What C++ allows is:

1. operator overloading of arbitrary operators. D has certain 
requirements for certain operators.
2. extracting the operator overloading to a module-level function. D 
requires operator overloading inside a type.

But neither of those problems are in play here. You could practically 
port the solution exactly to D.

HOWEVER, I don't think the mechanics make this solution worthwhile. 
Carrying around extra structs and wrapping things in this complicated 
way doesn't seem very attractive to me.


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