On Thu, 17 Aug 2000, John McNamara wrote:
> On Wed, Aug 16, 2000 at 11:42:20AM -1000, Tim Jenness wrote:
> > What about:
> >
> > for (0..$#array) {
> > print $array[$i], " is at index ", $i, "\n";
> > }
> >
> > I use that whenever I need to loop over indices of two arrays at once.
>
>
> I use it myself ;)
>
>
> Iterating over an array in terms of the array variable instead of the array
> index provides a useful level of abstraction in a for/foreach loop. It adds
> a certain beauty to a programming language to have a for loop without the
> need to define a lower bound, an upper bound and a counter.
>
Just to add, I like the proposal to provide access to the array element
and the index. It was just that your example was far more verbose than was
required (using C style for) -- it felt like you were trying to make the
case stronger by starting from as complicated an example as possible :-)
I often find myself wishing that
for (@array) {
}
could give me the index as well as the element.
for my($element,$index) (@array) {
}
is a good alternative (with $_ and $# being the implict forms).
--
Tim Jenness
JCMT software engineer/Support scientist
http://www.jach.hawaii.edu/~timj
