On 5/4/2014 4:08 PM, Joseph Rushton Wakeling via Digitalmars-d wrote:
I should also be thanking you -- this reminded me that I needed to make some key changes to my std.random2 proposal, including this stricter isUniformRNG template: https://github.com/WebDrake/std.random2/commit/a071d8d182eb28516198bb292a0b45f86f4425fe How does this look to people? And would there be interest in seeing this land in the existing std.random ... ?
Some good looking stuff in there. The separation is a nice improvement, and having a "shuffle" is something we could certainly use.
About avoiding problems from accidentally duplicating internal state, I'm not sure that changing to classes is really necessary for that. I addressed it in HashDRBG by simply making the internal state static. (Oops, or at least I meant to...fixing now...). The various InputRange instantiations (for the different possible elemement types) all draw from the same source (HashDRBGStream), so this should work out pretty well. I'd imagine the existing std.random algos could do something similar.
