[WORK] groupBy is in! Next: aggregate

[Justin Whear via Digitalmars-d]

On Fri, 23 Jan 2015 10:08:30 -0800, Andrei Alexandrescu wrote:

> So H.S. Teoh awesomely took
> https://github.com/D-Programming-Language/phobos/pull/2878 to
> completion. We now have a working and fast relational "group by"
> facility.
> 

This is great news.  It seems like every time I make use of component 
programming, I need groupBy at least once.  I have a D file with an old 
copy of a groupBy implementation (I think it's Andrei's original stab at 
it) and it gets copied around to the various projects.