I thought I understood grep $person_has eq $_, $item {...} to mean:

That's not valid Perl.

search $person_has for

grep $person_has eq $_, $item searches through the list after the comma ($item), not through $person_has. The first expression tells us what is being sought: elements equal to $person_has.

In reply to Re: (Mis)Understanding <c>grep...eq $_<c> by ikegami
in thread (Mis)Understanding grep...eq $_ by ww

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