{"provider_url":"https://hatena.blog","width":"100%","published":"2010-06-15 21:39:18","categories":["\u30e1\u30e2"],"description":"Ruby\u306e\u5b9a\u6570\uff08\u5927\u6587\u5b57\u3067\u59cb\u307e\u308b\u5909\u6570\uff09\u306f\u518d\u4ee3\u5165\u304c\u53ef\u80fd\u3067\u3059\u3002\u8b66\u544a\u306f\u51fa\u307e\u3059\u304c\u5909\u66f4\u3067\u304d\u307e\u3059\u3002 FOO = \"hello\" FOO = \"world\" p FOO\u7d50\u679c\uff1a temp.rb:2: warning: already initialized constant FOO \"world\"Ruby\u306b\u306fC/C++\u306e\u3088\u3046\u306a\u5b9a\u6570\u306f\u5b58\u5728\u305b\u305a\u3001\u5927\u6587\u5b57\u3067\u59cb\u307e\u308b\u5909\u6570\u306f\u300c\u30af\u30e9\u30b9\u306b\u5c5e\u3057\u3001Foo::Bar\u306e\u3088\u3046\u306b\u5916\u304b\u3089\u5024\u3092\u53d6\u308a\u51fa\u305b\u308b\u5909\u6570\u300d\u3067\u3042\u308b\u3068\u601d\u308f\u308c\u307e\u3059\uff08\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u5b9a\u6570\u306fObject\u306b\u5c5e\u3057\u307e\u3059\uff09\u3002\u300c\u5927\u6587\u5b57\u3067\u59cb\u307e\u308b\u5909\u6570\u306f\u5b9a\u6570\u300d\u3068\u3044\u3046\u3088\u308a\u3001\u300c\u5927\u6587\u5b57\u3067\u59cb\u307e\u308b\u5909\u6570\u306f\u304a\u3082\u306b\u5b9a\u6570\u3068\u3057\u3066\u4f7f\u308f\u308c\u3066\u3044\u308b\u300d\u304c\u6b63\u78ba\u306a\u3068\u3053\u308d\u3067\u3057\u3087\u3046\u304b\u3002\u5927\u6587\u2026","url":"https://k-sato-at-oiax.hatenadiary.org/entry/20100615/1276605558","author_url":"https://blog.hatena.ne.jp/k-sato_at_oiax/","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fk-sato-at-oiax.hatenadiary.org%2Fentry%2F20100615%2F1276605558\" title=\" Ruby\u306e\u5b9a\u6570\u306f\u5b9a\u6570\u3067\u306f\u306a\u3044 - Ruby\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"k-sato_at_oiax","image_url":null,"blog_title":"Ruby\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u65e5\u8a18","title":" Ruby\u306e\u5b9a\u6570\u306f\u5b9a\u6570\u3067\u306f\u306a\u3044","version":"1.0","blog_url":"https://k-sato-at-oiax.hatenadiary.org/","provider_name":"Hatena Blog","type":"rich"}