gfx https://blog.hatena.ne.jp/gfx/ Islands in the byte stream (legacy) https://gfx.hatenadiary.org/ Perl js/scheme/perl/ruby/C - この世で最も役に立たない関数をPerlで： #!perl use strict; use warnings; sub pointless{ printf "Turning off myself = 0x%X\n", \&pointless; undef *pointless; }; pointless; pointless; 結果： Turning off myself = 0x8CEABCC Undefined subroutine &main::pointless called at pointless.pl line 11. 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fgfx.hatenadiary.org%2Fentry%2F20090603%2F1244008076" title="pointless() in Perl - 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 2009-06-03 14:47:56 rich https://gfx.hatenadiary.org/entry/20090603/1244008076 1.0 100%