[phobos] datetime review

[Andrei Alexandrescu]

On 10/10/10 7:56 CDT, Philippe Sigaud wrote:
> On Sun, Oct 10, 2010 at 03:40, Denis<2korden at gmail.com>  wrote:
>> I believe in D one should be able to write a RangedInt(int lowerBound,
>> int upperBound) type that would make sure it contains value in the
>> range specified (that would require runtime checks, but I think that's
>> acceptable, those check can be disabled in release). Could be suitable
>> for DayOfWeek, Month, etc.
>
> What about posting that as a [challenge] on the main D newsgroup?

Good idea.

> It's also interesting for floating point values between 0 and 1, for
> probabilities or whatever field that's normalized.
> Heck, even for defining letters, digits, etc.
>
> alias Ranged!(char, 'a','z') letters;
> alias Ranged!(char, 'A', 'Z') Letters;
> alias Ranged!(char, '0', '9') digits;

Great. I still suggest using "Bounded" instead of "Ranged" to avoid 
confusion with anything range. In particular, ranges are open to the 
right but bounded are closed.


Andrei