undefined - Can a value be uninitialized, but still defined, in Perl? -


Running ActiveState Perl 5.10.1 on Win32.

How is this code: 

  dead (defined ($ r->; unparsed_uri = ~ '/ (logout.pl.)' $ ')); Dies with

... 1 , while changing the same line to say: 

  die ( $ R-> gt; Unparsed_uri = ~ '/ (logout.pl)? $'); Use undefined value in

... dies <<> defined so far Initialize ? I thought undefined means undefined.

In the first case, the matching operation is taking place in the scalar In the second case, this array is in context Almost as you wrote: 

  my @ group = $ r-> gt; Unparsed_uri = ~ '/ (logout.pl))'; Die @ group;

If the $ r-> unparsed_uri corresponds to the pattern, but $ 1 is undefined because the matching string with "/" Finished, then the @ group will be an array of length 1, in which an element will be undef .

Put it together, it seems as if you want to: 

  die (undef);

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