byKey and byValue: properties or methods?

[Andrei Alexandrescu]

On 1/17/12 4:49 PM, bearophile wrote:
> Andrei Alexandrescu:
>
>> I hate I must ask this:
>
> I am sorry to see you do something you hate :-(
>
> Regarding your question, I'd like keys/values to require () because they do lot of work to create the dynamic array, while I like byKey/byValue to be properties because (I think) their creation is O(1). But now we can't change keys/values. So I'd like to keep all five of them as properties.
>
> I'd like a byPair property too:
> http://d.puremagic.com/issues/show_bug.cgi?id=5466

byPair is tricky because std.tuple is not visible from object.

Andrei