On Tue, Jun 19, 2001 at 02:41:40PM -0700, Bob Mangold wrote:
[snip]
> except I can't just type 'foreach my($line) (<>)'.
That's because your syntax is wrong. It should be:
foreach my $line (<>) {
Assuming you actually want to use foreach for such a thing. What you really
should be using is:
while (defined(my $line = <>)) {
> I have to type it on a preceeding line. If this is the case then
> why does perl localize it anyway. If i'm declaring it before that loop
> shouldn't its scope carry through the loop?
I believe the reason for this behaviour lies in the foreach loop's aliasing
feature. The iterator variable ($line) is an alias for the actual value in
the list; modifications to the iterator modify the original list element (if
it's modifiable). To support this feature the iterator variable must
actually -be- the list element. This feature is more useful than the
ability to keep the last value of the list.
Michael
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