Using grep on undefined array

Andrew Beverley andy at
Thu Aug 15 21:23:07 BST 2013

On Wed, 2013-08-14 at 00:09 +0100, Andrew Beverley wrote:
> Hi,
> Could someone please explain to me why the following outputs an empty
> string rather than "*"?


Thanks for all the replies - a very interesting read. I had never even
heard of autovivification, so very useful to know what it is. I will
tweak my code accordingly!



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