{"published":"2012-07-23 20:30:57","description":"\u5426\u5b9a\u6f14\u7b97\u5b50 (!) \u306f 0 \u3068\u304b undef \u304c\u7fa9, \u3042\u3068\u306f\u771f. defined \u306f undef \u4ee5\u5916\u306f\u771f.hash\u8981\u7d20\u306e\u5b58\u5728\u78ba\u8a8d\u306f, exist exists $math_scores{$key} Ref. http://fleur.hio.jp/perldoc/mix/pod/perl5100delta.mix.html http://d.hatena.ne.jp/perlcodesample/20080213/1202911471","title":"\u5426\u5b9a\u6f14\u7b97\u5b50 ! \u306e\u30e1\u30e2","categories":["Perl"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fyellowpepper.hatenadiary.org%2Fentry%2F20120723%2F1343043057\" title=\"\u5426\u5b9a\u6f14\u7b97\u5b50 ! \u306e\u30e1\u30e2 - Log4jpnLog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_url":"https://hatena.blog","width":"100%","type":"rich","blog_url":"https://yellowpepper.hatenadiary.org/","author_url":"https://blog.hatena.ne.jp/yellowpepper/","provider_name":"Hatena Blog","author_name":"yellowpepper","height":"190","version":"1.0","blog_title":"Log4jpnLog","url":"https://yellowpepper.hatenadiary.org/entry/20120723/1343043057","image_url":null}