@edits is an array not a reference to an array. No need to dereference it. Each element of @edits is a reference to an array with a single element. The following should work: 

print join('|', map {$_->[0]} @edits), "\n";

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Update: changed parentheses. Thanks Athanasius.

In reply to Re: dereference array by hdb
in thread dereference array by natxo

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