Re: random numbers in bulk

[Marc Glisse <marc dot glisse at inria dot fr>]

On Sun, 26 Aug 2012, Ulrich Drepper wrote:

> On Sun, Aug 26, 2012 at 1:36 PM, Jonathan Wakely <jwakely.gcc@gmail.com> wrote:
> > But I've just seen Paolo's suggestion for a __generate_impl that both
> > use, and I prefer that idea.
>
> How about the following.  I introduced a __generate_impl() member
> function.  This required in a few cases an additional wrapper function
> but nothing too bad. The template parameter order is changed, too.

Hello,

I haven't looked at it in details, but I have 2 comments / questions:

1) it is really painful that C++ won't let us use a default argument of 
this->param(). I hit (variants of) this limitation quite often.

2) would it make sense to overload the free function std::generate to make 
it call these __generate member functions when it recognizes the last 
argument as the result of a bind of suitable types? That's quite ugly, but 
it could make it possible to benefit from the cool optimizations while 
still writing portable code. I haven't tried it so it could be impossible 
for some reason, or it could be ugly enough that it isn't worth it.

--
Marc Glisse