Proposal for SentinelInputRange

[Walter Bright]

On 2/28/2013 5:02 AM, Peter Alexander wrote:
> On Thursday, 28 February 2013 at 10:57:29 UTC, Walter Bright wrote:
>>> My worry here is that we are setting a precedent for adding new range concepts.
>>> If the only justification needed is that is saves a single operation in some
>>> niche area of computing then we are opening the door to a LOT of different range
>>> concepts.
>>
>> There are many cases where speed is a very big deal.
>
> Yes, are we going to add new range categories every time there's a performance
> benefit to doing so?
>
> has16ByteAlignedElements
> hasUniqueElements
> hasContiguousMemory
> isMonotonic
> isUnimodal
> ...
> ?

Depends on whether one can make a good case for them.