Sudoku Py / C++11 / D?

[Timon Gehr]

On 08/21/2012 05:52 PM, maarten van damme wrote:
> > On 08/20/2012 11:49 PM, Timon Gehr wrote:> On 08/20/2012 10:43 PM, 
maarten van damme wrote:
>>>
>>> Still it comes nowhere near beating timons solution. Is the logic of
>>> that documented somewhere because I don't understand it.
>>>
>>
>> Try this:
>> http://dpaste.dzfl.pl/23b1b6e2
>
> Thank you very much, this makes everything more clearer. I'm not very
> familiar with binary operators so the comments help out a lot.
> Would you mind it if I shamelessly copy your solution of using shorts
> to store possibilities in?
>

Not at all.

> I'm also a bit confused. How come the int's you change from a square
> passed from squ are stilled referenced to the original array? I
> thought it lost that reference as soon as you did any operations (like
> concenating) on it?
>

The used ranges just express patterns of iteration. They replace manual
for-loops. The data source has assignable elements, and the relevant
range operations in Phobos all propagate this capability to their
result.