1st draft of complete class-based std.random successor

[Joseph Rushton Wakeling]

On Saturday, 22 March 2014 at 20:09:00 UTC, bearophile wrote:
> Perhaps it's better to not document this alias.

For now it will be documented, for clarity if nothing else.  
Whether that documentation makes it into a Phobos submission, I 
think should depend on formal review.

> I'd like a permutations() range in std.range or 
> std.combinatorics.  permutation() sounds a bit too much close, 
> despite it is inside another module.

How does your desired concept relate to the existing 
std.algorithm.nextPermutation ... ?