[WORK] groupBy is in! Next: aggregate

[Andrei Alexandrescu via Digitalmars-d]

On 1/23/15 12:38 PM, bearophile wrote:
> Ary Borenszweig:
>
>> In most languages group by yields a tuple of {group key, group values}.
>
> I'm saying this since some years... (and those languages probably don't
> use sorting to perform the aggregation).

At some point in the coming years the pain is bound to become unbearable 
so you'll give the gift of a pull request. -- Andrei