On Wednesday, May 16, 2012 03:29:23 Nick Sabalausky wrote:
> "Jonathan M Davis" <[email protected]> wrote in message
> news:[email protected]...
>
> > No. That's expected. Your range is a value type, so it got copied when you
> > used it with foreach.
>
> But foreach isn't a function, it's a flow-control statement.
If it _wasn't_ copied, using foreach would consume your range. It doesn't, and
it would really suck if it did. But
foreach(e; range) {}
pretty has to be translated to something similar to
for(auto r = range; !r.empty(); r.popFront())
{
auto e = r.front;
}
And actually, looking at TDPL (p. 381), that's pretty much _exactly_ what it
gets translated to (save for the exact variable names used).
- Jonathan M Davis
