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... $$arrayref[0] = "January"; $$hashref{"KEY"} = "VALUE"; # deref the hash, assign a key &$coderef(1,2,3); ...
... ${$arrayref}[0] = "January"; ${$hashref}{"KEY"} = "VALUE"; # same as above, differet syntax &{$coderef}(1,2,3); ...
$arrayref->[0] = "January"; $hashref->{"KEY"} = "VALUE"; # still the same, witha arrow operator $coderef->(1,2,3);
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