Update: The OP was completely changed while I wrote this reply, including the subject. OP below. My answer to the revised question further below.

Original post: 

#!/usr/local/bin/perl
use strict;
use warnings;

my $i=1;

my @array = (34,543,754,5432,865,623,8635,5324,62,8654);
my @list = (1, 3, 5, 8);


foreach $a(@list){
 print "foreach print value of a: $a\n";
while ($i) {
  print "while print value of a: $a\n";
  $i=$i-1;
  print $array [$a], "\n";
  }
}

[download]
for some reason, i want to pass certain value in @array to the while loop, but my code only allows me to pass the first value. Below is the result i want to get, Can anyone help me out? T_T 
foreach print value of a: 1
while print value of a: 1
543
foreach print value of a: 3
while print value of a: 3
5432
foreach print value of a: 5
while print value of a: 5
623
foreach print value of a: 8
while print value of a: 8
62

[download]
Original post ends here

Reply starts here

Use for: 

my $value = $array[$_] for @list;

[download]
#!/usr/bin/perl
use strict;
use warnings;
use feature qw/ say /;
use Data::Dumper;

my @array = (34,543,754,5432,865,623,8635,5324,62,8654);
my @list = (1, 3, 5, 8); 

say "\$a: $_ \$array[$_] $array[$_]" for @list;

__END__

[download]
Output: 
$ perl 1140597.pl
$a: 1 $array[1] 543
$a: 3 $array[3] 5432
$a: 5 $array[5] 623
$a: 8 $array[8] 62
$

[download]
The way forward always starts with a minimal test.

In reply to Re: not able to pass foreach value to a while loop by 1nickt
in thread how to move to the first row of array after passing it through a while loop by wangruonan

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