If you have a big data you can also try (even if ambiguous, equivocal, devious..)
grep defined, map {$_->{'k2'}} @aoh;

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L*
There are no rules, there are no thumbs..
Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.

In reply to Re: extracting elements by key from an array of hashes by Discipulus
in thread extracting elements by key from an array of hashes by ciderpunx

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