my @answer = undef;

General note: I'm not sure what you intend by the quoted statement, but you should realize that it initializes the (newly created) array with a single element, the undef value, which in Perl is a well-defined value! (The  @answer array thus created is also entirely and absolutely independent of any other array with the same name.) 

c:\@Work\Perl\monks>perl -wMstrict -le
"use Data::Dump qw(dd);
 ;;
 my @answer = undef;
 dd \@answer;
"
[undef]

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Give a man a fish:  <%-{-{-{-<

In reply to Re^7: How to write testable command line script? by AnomalousMonk
in thread How to write testable command line script? by thechartist

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