Flag proposal

[Andrei Alexandrescu]

On 6/10/11 11:55 PM, Nick Sabalausky wrote:
>>> 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.
>>
>
> Which makes Flag even less of an improvement.

I'm not sure I figure the reasoning. You can't penalize twice for the 
same reason. This makes the existing situation less desirable, not Flag 
less of an improvement over it.

Andrei