In Perl, how can I find the index of a given value in an array?

Question

$VAR1 = [
          \'830974\',
          \'722065\',
          \'722046\',
          \'716963\'
        ];

How can I calculate the array index for

Answer 1

The firstidx function from List::MoreUtils can help:

use strict;
use warnings;
use List::MoreUtils qw(firstidx);

my @nums = ( '830974', '722065', '722046', '716963' );
printf "item with index %i in list is 722065\n", firstidx { $_ eq '722065' } @nums;

__END__

item with index 1 in list is 722065