Mh... something like this?

@x=(1..3) ;
undef $x[1] ;
$_ = defined $_? $_: '[__UNDEF__]' for @x ;
print "@x" ;

[download]

Ciao!
--bronto

The very nature of Perl to be like natural language--inconsistant and full of dwim and special cases--makes it impossible to know it all without simply memorizing the documentation (which is not complete or totally correct anyway).
--John M. Dlugosz

In reply to Re^3: no uninitialized warnings by bronto
in thread no uninitialized warnings by si_lence

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