You may read this by brian_d_foy. $ERRNO is not what you want.

One option might be to rewrite you code like this: 

sub four_digit_year {
   my $year = shift;
   if ( $year !~ /\d{4}/ ) {
     return; # undef
   }
   return $year;
}

[download]

Then check if the result of your sub call is defined and die with some custom error message if not.

And probably you may find a more robust recipe on PM how to test if some date is valid.

Best regards, Karl

«The Crux of the Biscuit is the Apostrophe»

perl -MCrypt::CBC -E 'say Crypt::CBC->new(-key=>'kgb',-cipher=>"Blowfish")->decrypt_hex($ENV{KARL});'Help

In reply to Re^2: Should I worry about "Inappropriate ioctl for device"? by karlgoethebier
in thread Should I worry about "Inappropriate ioctl for device"? by Lady_Aleena

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