On Wed, Aug 09, 2017 at 09:34:26PM +0000, Q. Schroll via Digitalmars-d-learn
wrote:
> On Friday, 4 August 2017 at 16:40:08 UTC, Stefan Koch wrote:
> > [..]
> >
> > foreach(x;A .. B)
> > it's lowerd to
> > auto limit = B;
> > auto key = A;
> > for(auto x = key;key < limit;++key)
> > {
> > // use x
> > }
>
> That's enough to know that the foreach loop does not reuse the space
> for the iteration variable. That was what I cared about.
Note that using BigInt as iteration variable will probably cause a
BigInt allocation per iteration, because operations on BigInt in general
will allocate a new BigInt result. So `++key` will probably create a new
instance of BigInt each time it's executed.
T
--
To provoke is to call someone stupid; to argue is to call each other stupid.
