I am trying to use a hash table which is made up of a constant string as the key and a constant number as the value. However, when I run the script, I get an error "Use of uninitialized value in print".

----------------------------------------------------
   use constant CONST_STR => "MYSTRING";
   use constant CONST_ID  => 1;

   my %TAGS = ( CONST_STR  => CONST_ID );

   my $fullString = "123456 MYSTRING 123456";
   my $string;

   ($string) = $fullString =~ /[A-Za-z]*/;

   print $TAGS{$string};
----------------------------------------------------

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Any idea how I can get this to work?

In reply to Unable to extract value from hash table by dr_dunno

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