{"blog_url":"https://boxnos.hatenablog.com/","url":"https://boxnos.hatenablog.com/entry/20070428/1177729948","author_url":"https://blog.hatena.ne.jp/tanakaBox/","version":"1.0","provider_url":"https://hatena.blog","published":"2007-04-28 12:12:28","type":"rich","blog_title":"\u30dc\u30af\u30ce\u30b9","categories":["Ruby"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fboxnos.hatenablog.com%2Fentry%2F20070428%2F1177729948\" title=\"* \u305f\u306e\u3057\u3044Ruby \u7b2c5\u7ae0 \u6761\u4ef6\u5224\u65ad - \u30dc\u30af\u30ce\u30b9\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","description":"nil\u3068false\u306e\u9055\u3044\u306b\u3064\u3044\u3066\u3002 \u30a4\u30de\u30a4\u30c1\u9055\u3044\u304c\u308f\u304b\u3089\u306a\u304b\u3063\u305f\u306e\u3067\u3001\u8abf\u3079\u305f Ruby FAQ: \u7d44\u8fbc\u307f\u30e9\u30a4\u30d6\u30e9\u30ea - 7.5 nil\u3068false\u306f\u3069\u3046\u9055\u3044\u307e\u3059\u304b Ruby\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u30de\u30cb\u30e5\u30a2\u30eb - \u5909\u6570\u3068\u5b9a\u6570 - \u7591\u4f3c\u5909\u6570 \u6301\u3063\u3066\u3044\u308b\u30e1\u30bd\u30c3\u30c9\u306e\u9055\u3044\u306f\uff0cnil.methods - false.methods\u3068 false.methods - nil.methods\u3092\u8868\u793a\u3057\u3066\u304f\u3060\u3055\u3044\uff0e \u30cf\u30c3\u30b7\u30e5\u3067\u306f\uff0cnil\u3092\u5024\u3068\u3057\u3066\u6301\u3064\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u304c\uff0c false\u3092\u6301\u3064\u3053\u3068\u306f\u3067\u304d\u307e\u3059\uff0e !!\u9a5a\u3044\u305f\u3002nil\u3082false\u3082\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304b\u3088!!nil\u306fJavaScript\u3067\u8a00\u3046\u3068\u3053\u308d\u306eundefined(\u672a\u5b9a\u7fa9\u5024\u2026","title":"* \u305f\u306e\u3057\u3044Ruby \u7b2c5\u7ae0 \u6761\u4ef6\u5224\u65ad","author_name":"tanakaBox","height":"190","provider_name":"Hatena Blog","image_url":null,"width":"100%"}