sub never return arrays. They return lists.
A sub never returns an array _directly_, but it can
return arrays by reference, along with anything else
it wants to return, in its list of return values.
The OP may have meant that the sub returns a list
of whatevers, or he might have meant that it returns
an array reference. It's hard to be certain since
he only gave us a possibly-misleading comment for
that case and focused on the error case where he
returns undef. My guess is, he hasn't _written_
the non-error case yet and hasn't put a lot of
thought into how it returns, but that's only a guess.
;$;=sub{$/};@;=map{my($a,$b)=($_,$;);$;=sub{$a.$b->()}}
split//,".rekcah lreP rehtona tsuJ";$\=$;[-1]->();print
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