Add these to Phobos?

[Mehrdad]

On Monday, 15 October 2012 at 22:35:41 UTC, Andrei Alexandrescu 
wrote:
> On 10/15/12 5:35 PM, Mehrdad wrote:
>> I think we need something like these in Phobos -- I was quite 
>> surprised
>> that I didn't find these in Phobos. They're really handy in 
>> Python.
> [snip]
>> Ideas?
>
> Yes, I wanted to add some relational operators forever! There's 
> a group() function in std.algorithm but doesn't offer a range 
> of ranges.
>
> Andrei

+1 yeah, group() was useless for me. I wanted to group 
consecutive items together by some criterion, which it 
(ironically) explicitly doesn't do.