A strongly pure PRNG

[monarch_dodra]

On Wednesday, 8 January 2014 at 01:13:12 UTC, deadalnix wrote:
> On Tuesday, 7 January 2014 at 12:37:39 UTC, qznc wrote:
>> On Tuesday, 7 January 2014 at 12:32:23 UTC, Kagamin wrote:
>>> I believe, bearophile was interested in this - a strongly 
>>> pure immutable Xorshift32(1) PRNG: 
>>> http://dpaste.dzfl.pl/5f710daf
>>
>> I would consider this weakly pure, because the implicit 
>> parameter "this" is not immutable. A strongly pure PRNG cannot 
>> change internal state.
>
> Without this, http://dilbert.com/strips/comic/2001-10-25/

Nice :)

Of course, mandatory xkcd PRNG:
https://d.puremagic.com/issues/show_bug.cgi?id=11138

You know, it *is* pure...