{"blog_title":"\u30d6\u30ed\u30b0\u30bf\u30a4\u30c8\u30eb\u5165\u529b ","author_name":"gkojax","author_url":"https://blog.hatena.ne.jp/gkojax/","type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fgkojax.hatenadiary.org%2Fentry%2F20120329%2F1333036379\" title=\"\u306a\u3093\u304b\u30e1\u30e2\u3060\u3051\u6b8b\u3063\u3066\u305f\u306e\u3067\u601d\u3044\u51fa\u3057\u3066\u66f8\u304f - \u30d6\u30ed\u30b0\u30bf\u30a4\u30c8\u30eb\u5165\u529b \" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2012-03-29 00:52:59","title":"\u306a\u3093\u304b\u30e1\u30e2\u3060\u3051\u6b8b\u3063\u3066\u305f\u306e\u3067\u601d\u3044\u51fa\u3057\u3066\u66f8\u304f","description":"active_support\u95a2\u9023\u3067\u3002 require 'active_support/all' def a return [1] end def b return nil end c = b || a d = b.presence || a \u3053\u306e\u5834\u5408c\u3082d\u3082\u3001a\u306e\u7d50\u679c\u3067\u3042\u308b[1]\u306b\u306a\u308b\u3002\u6b21\u3001 def a return [1] end def b return [] end c = b || a c = b.presence || a \u3053\u306e\u5834\u5408c\u306f[]\u3001d\u306f[1]\u3002b.presence\u306fb.present?\u304ctrue\u306e\u5834\u5408\u81ea\u8eab\u3092\u8fd4\u3057\u3066\u3001false\u306e\u5834\u5408nil\u3092\u8fd4\u3059\u3001\u3060\u3063\u305f\u3068\u601d\u3044\u307e\u3059\u3002\u305d\u308c\u306b\u3057\u3066\u3082\u2026","categories":[],"image_url":null,"height":"190","width":"100%","version":"1.0","provider_name":"Hatena Blog","url":"https://gkojax.hatenadiary.org/entry/20120329/1333036379","blog_url":"https://gkojax.hatenadiary.org/","provider_url":"https://hatena.blog"}