{"image_url":null,"url":"https://blog.mirakui.com/entry/20090604/truefalse","title":"\u5404\u8a00\u8a9e\u306b\u304a\u3051\u308btrue/false\u307e\u3068\u3081","author_url":"https://blog.hatena.ne.jp/mirakui/","published":"2009-06-04 00:00:00","provider_url":"https://hatena.blog","height":"190","version":"1.0","author_name":"mirakui","description":"\u305f\u3068\u3048\u3070 PHP \u3067\u3001 if ($hoge) { ... } \u3068\u304b\u66f8\u3044\u3066\u3042\u3063\u305f\u3089\u3001 $hoge \u304c\u3069\u3093\u306a\u5024\u306e\u3068\u304d\u306b if \u306e\u4e2d\u8eab\u304c\u5b9f\u884c\u3055\u308c\u308b\u306e\u304b\u5373\u7b54\u3067\u304d\u307e\u3059\u304b\u3002 \u3053\u3046\u3044\u3046\u66f8\u304d\u65b9\u306f\u591a\u304f\u306e\u8a00\u8a9e\u3067\u53ef\u80fd\u3067\u3059\u304c\u3001\u8a00\u8a9e\u306b\u3088\u3063\u3066\u4f55\u304c\u771f\u3067\u4f55\u304c\u507d\u306b\u306a\u308b\u306e\u304b\u304c\u7570\u306a\u308b\u306e\u3067\u3001\u305d\u308c\u305e\u308c\u307e\u3068\u3081\u3066\u307f\u307e\u3057\u305f\u3002 C\u8a00\u8a9e C\u8a00\u8a9e\u306b\u306f bool \u578b\u304c\u7121\u3044\u3002 0 \uff08int\uff09 \u3060\u3051\u304c\u507d\u3068\u306a\u308a\u3001\u305d\u308c\u4ee5\u5916\u306f\u3059\u3079\u3066\u771f\u3068\u306a\u308b\u3002 NULL \u5b9a\u6570\u306f stddef.h \u3067\u4ee5\u4e0b\u306e\u3088\u3046\u306b ((void*)0) \u3068\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u507d\u5024\u3068\u3057\u3066\u4f7f\u3048\u308b\u3002 \u610f\u898b\u304c\u5206\u304b\u308c\u305d\u3046\u306a\u3068\u3053\u308d\u3067\u3059\u304c\u3001\u500b\u4eba\u7684\u306b\u306fNULL\u3092\u507d\u5024\u3068\u3057\u3066\u4f7f\u7528\u3059\u308b\u306f\u597d\u304d\u3058\u3083\u306a\u3044\u3067\u3059\u3002 #ifnd\u2026","type":"rich","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.mirakui.com%2Fentry%2F20090604%2Ftruefalse\" title=\"\u5404\u8a00\u8a9e\u306b\u304a\u3051\u308btrue/false\u307e\u3068\u3081 - \u663c\u30e1\u30b7\u7269\u8a9e\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_title":"\u663c\u30e1\u30b7\u7269\u8a9e","width":"100%","categories":["language"],"blog_url":"https://blog.mirakui.com/"}