Am Samstag, 21. Mai 2005 04.21 schrieb Peter Rabbitson:
> Hello,
>
> When perl executes a foreach loop, it creates some kind of array of all the
> iterators and then goes over them one by one. Is the current index pointer
> accessible from inside the loop? I was unable to find anything related in
> perlvar.
>
> Thanks for the input
>
> Peter
>
> P.S. I know it is trivial to add an incrementing counter at the end of
> the loop, but it seems redundant to me, since perl got to do something
> similar anyway just to keep track of its own state.
I can't see the _necessity_ of holding an "overall index" while iterating over
a list. At lest theoretically, the iteration could be implemented with a
linked list; and if you have something like
for (@array, keys (%hash), 'a', 'b', ret_array()) {...}
why keep track of, for example, the index of 'b' within the _whole_ list?
(but I can't answer your question :-)
joe
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