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Why does an undef argument in a join produce this warning?

by Anonymous Monk
on Apr 24, 2008 at 05:57 UTC ( [id://682560]=perlquestion: print w/replies, xml ) Need Help??

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  1. or download this
    
    
    ...
    }
    
    print test();
    
  2. or download this
    C:\WINDOWS\system32\cmd.exe /c sh
    $ perl -w test.PL
    Use of uninitialized value in concatenation (.) or string at test.PL l
    +ine 11.
    HTML$
    

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