On Feb 6, Carl Rogers said:
>I'm using foreach to do something to an array. is there a way I can
>reference a previously 'seen' element without having to traverse the array
>with a for(;;) statement?
>
>ie. I'd like this to work:
>
>foreach(@array) {
>
> if ($_ =~/somecondition/) {
> # I want to do something to the element prior to $_ ($_ - 1)
> }
>}
Just keep track of the previous element.
my $is_first_iter = 1;
my $prev_ele;
for (@array) {
if ($is_first_iter) {
$prev_ele = $_;
$is_first_iter = 0;
next;
}
if (/condition/) {
# fiddle with $prev_ele
}
$prev_ele = $_;
}
--
Jeff "japhy" Pinyan [EMAIL PROTECTED] http://www.pobox.com/~japhy/
RPI Acacia brother #734 http://www.perlmonks.org/ http://www.cpan.org/
** Look for "Regular Expressions in Perl" published by Manning, in 2002 **
<stu> what does y/// stand for? <tenderpuss> why, yansliterate of course.
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