dayflower https://blog.hatena.ne.jp/dayflower/ daily dayflower https://dayflower.hatenablog.com/ perl use strict; use warnings; sub Dump { @_ = map { sprintf "'%s'(%s)", $_, utf8::is_utf8($_) ? 'utf8' : 'bytes' } @_; print {*STDERR} join(q{, }, @_), "\n"; } no utf8; Dump( foo => 'bar' ); #=> 'foo'(bytes), 'bar'(bytes) no utf8; だもんで，両者とも bytes なのは，まぁあたりまえ。 ところが，これを use utf8; で動かすと…… use utf8; Dump( f… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fdayflower.hatenablog.com%2Fentry%2F20090129%2F1233202917" title=" use utf8 環境下で =&gt; オペレータの左辺が UTF8 flag on になってしまう - daily dayflower" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2009-01-29 13:21:57 rich https://dayflower.hatenablog.com/entry/20090129/1233202917 1.0 100%