Flag proposal

[Michel Fortin]

On 2011-06-10 22:08:31 -0400, Andrei Alexandrescu 
<SeeWebsiteForEmail at erdani.org> said:

> On 6/10/11 8:08 PM, Michel Fortin wrote:
>> On 2011-06-10 18:57:20 -0400, Andrei Alexandrescu
>> <SeeWebsiteForEmail at erdani.org> said:
>> 
>>> https://github.com/andralex/phobos/commit/84c75336a4ef04b4c3b1924d7ac9329e744ab8e7


It's

still 
>>> 
>> a hack, but I'll agree it makes the encapsulation a little better
>> if you use yes!"abc" at the function call point.
>> 
>> However, I still think it's a deterioration from the user's point of
>> view compared to the current situation with hand-crafted enums: it still
>> requires a string, and the documentation will say func(Flag!"abc" abc),
>> repeating the parameter's name unless you hand-craft a special Ddoc
>> version of the function declaration. It's better than Flag!"abc".yes,
>> but it's worse than Abc.yes.
> 
> But the problem is the same today.
> 
> enum Abc : bool { no, yes }
> void fun(Abc abc = Abc.no);
> 
> No difference. In the function declaration, the word "abc" occurs three times.

I actually didn't meant to post the above. I wrote it, then thought I 
should sleep on it before deciding whether I'd post it or not since I 
was a little to tired. Then I hit a bad key combo and the message 
reached the server before I could unplug my network cable. I'm not 
surprised you could find some inconsistencies in it.


-- 
Michel Fortin
michel.fortin at michelf.com
http://michelf.com/