gfx https://blog.hatena.ne.jp/gfx/ Islands in the byte stream (legacy) https://gfx.hatenadiary.org/ perl Test::Vars の解説を少しだけ。Perlの構文木を歩き回るには、B::walkoptree()かB::walkoptree_exec()を使う。基本的なやり方は以下の通りである。 #!perl -w use strict; use feature 'say'; use B; my $cv = B::svref_2object(sub{ $_[0] + 42 }); local *B::OP::visit; *B::OP::visit = sub { my($op) = @_; say $op->name; }; say "<walkoptree>"; B::walkoptree($cv… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fgfx.hatenadiary.org%2Fentry%2F20100314%2F1268544446" title=" Visit opcode tree with B - Islands in the byte stream (legacy)" 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 2010-03-14 14:27:26 rich https://gfx.hatenadiary.org/entry/20100314/1268544446 1.0 100%