On Fri, 10 Jun 2011 16:21:59 -0400, Andrei Alexandrescu
<[email protected]> wrote:
On 6/10/11 2:30 PM, Jonathan M Davis wrote:
On 2011-06-10 09:15, Andrei Alexandrescu wrote:
https://github.com/D-Programming-Language/phobos/pull/94
Discuss!
I do have to admit that as much as I hate the idea of named parameters,
this
particular proposal certainly seems to be an argument in favor of
adding them,
which would tend to argue against making these changes.
There is general agreement (which includes myself) that a language
feature is nicer than Flag,
Yes.
and that Flag is nicer than the current state of affairs.
No. Flag!"KeepTerminator".yes is much worse than KeepTerminator.yes. And
Flag!"KeepTerminator" keepTerminator is just, horrendous, in documentation
*or* source.
If the rote creation of boolean enums is a problem, why not a mixin?
template Flag(string name)
{
mixin("enum " ~ name ~ " : bool { no = false, yes = true }");
}
mixin Flag!"KeepTerminator";
This is no surprise because a specialized language feature will _always_
be better than one built from tools offered within the language. It's
like God vs. human.
I think the debate is more about how this solution is a step in the wrong
direction more than it's not as good as a real solution.
So the crucial question is whether a language change is warranted.
If the options are Flag or a language solution, the answer is yes. I'd
much rather keep things as they are than have Flag!string.
-Steve
