Does it mean that one of the @CHOICE array contents are empty?

Yes. You can avoid that warning by checking for definedness:

foreach (@CHOICE) {
    if (defined && m/2001\sCensus\sOutput\sArea/){

[download]
or 
foreach (@CHOICE) {
  next if (!defined);
  if (m/2001\sCensus\sOutput\sArea/){

[download]

This uses $_ implicitly in both the definedness test and the pattern match. Often it's clearer to assign the value to a lexical variable: 

for my $chosen (@CHOICE) {
    if (defined $chosen && $chosen =~ m/2001\sCensus\sOutput\sArea/){

[download]

As a further comment, usage of upper-case variable names is generally reserved for constants or perl private variables.


There are ten types of people: those that understand binary and those that don't.

In reply to Re: An error message to understand by tirwhan
in thread An error message to understand by Win

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