The code I am interested in is the bolded line.
It seems to do just what it looks like it would, but I don't know how or why, so I figure I will shoot myself in the foot with it someday.
Can anyone explain this use of a comma? Does 'or' force a list context on the right hand side, and 'or' is an operator with a lower precedence than ','?
Is there a better or more idomatic way to achieve this result?

Thanks

while ( my ($key, $hashref) = each %HoH) {
DO_SOMETHING or warn("some warning"), next;
}

In reply to using 'or' followed by ',' by mathew_

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