Dconf 2015 talks...

[Era Scarecrow via Digitalmars-d]

  Finally getting around to watching all the talks, all good stuff 
:) Figured I'd make a thread talking about things I came across 
and perhaps get into a discussion on them in detail.

  Anyways I'm watching the talk with Joseph Wakeling involving RNG 
and I wonder, is that still a problem or not?

  I ask since the simplest and most correct thing I can think of 
is to use the heap for a referenced state, and dup would then 
duplicate the state properly while otherwise the RNG problems go 
away that most of the talk went on about.

  It's possible I've been out of the loop and this has already 
been solved. Not sure yet, I haven't looked closely at any of the 
sources or the language updates.

  So... time for some rusty D prototyping.

[code]
struct RNG {
   int* state;

   this(int seed) {
     state = new int;
     *state = seed;
   }

   //if you provide a pointer, we don't rely on the heap/gc at 
all...
   //maybe a small stack based allocator could be useful for this?
   this(int* seed) { state = seed; }

   //dup instead of save, so it's not a forward range
   RNG dup() { return RNG(*state); }

   //popfront, front & empty as expected
}
[/code]