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なぜこれは印刷され8ますか?なぜ$e変化しないの$iですか?
8
$e
$i
my $i = 8; sub u { return \$i; } my $e = u(); $e = "eer"; print $i; #8
参照は別名ではありません。それらを明示的に逆参照する必要があります。
$$e = "eer"; # Store 'eer' into the variable referenced by $e
と同じではありません
$e = 'eer'; # Store 'eer' into $e, discarding its previous content