{"blog_title":"\u3072\u304c\u304d\u306e\u65e5\u8a18","description":"\u7b2c54\u56de Ruby/Rails\u52c9\u5f37\u4f1a@\u95a2\u897f \u6f14\u7fd2\u554f\u984c 1 \u65e2\u5b58\u306e Array \u306b\u5909\u66f4\u3092\u52a0\u3048\u308b\u65b9\u6cd5\u3068\u3001\u65b0\u3057\u304f Array \u3092\u4f5c\u308b\u65b9\u6cd5\u3067 [0, 1, 2, 3] \u3068\u3044\u3046 Array \u3092\u4f5c\u308d\u3046\u3068\u3044\u3046\u554f\u984c\u3002 a = [] b = a b # => [] a.object_id # => 134275960 4.times{|i| a[i] = i} a # => [0, 1, 2, 3] a.object_id # => 134275960 b # => [0, 1, 2, 3] Array#[]= \u3067 Array \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5909\u66f4\u3059\u308b\u4f8b\u3002 object_id \u304c\u7b49\u3057\u3044\u306e\u3067\u65e2\u5b58\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5909\u66f4\u2026","blog_url":"https://mas-higa.hatenadiary.org/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmas-higa.hatenadiary.org%2Fentry%2F20120531%2F1338468620\" title=\"\u6f14\u7fd2\u554f\u984c\u89e3\u7b54\u4f8b - \u3072\u304c\u304d\u306e\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>","height":"190","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","title":"\u6f14\u7fd2\u554f\u984c\u89e3\u7b54\u4f8b","type":"rich","author_url":"https://blog.hatena.ne.jp/mas-higa/","published":"2012-05-31 21:50:20","version":"1.0","url":"https://mas-higa.hatenadiary.org/entry/20120531/1338468620","width":"100%","image_url":null,"categories":["Ruby","rubykansai54"],"author_name":"mas-higa"}