{"version":"1.0","url":"https://iken0.hatenadiary.org/entry/20000702/p6","author_url":"https://blog.hatena.ne.jp/iken0/","author_name":"iken0","title":"\u8aad\u307f\u53d6\u308b\u30d0\u30a4\u30c8\u6570\u3092\u6307\u5b9a\u3059\u308b","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fiken0.hatenadiary.org%2Fentry%2F20000702%2Fp6\" title=\"\u8aad\u307f\u53d6\u308b\u30d0\u30a4\u30c8\u6570\u3092\u6307\u5b9a\u3059\u308b - \u30ed\u30d0\u306e\u8033\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2000-07-02 00:00:06","provider_url":"https://hatena.blog","height":"190","image_url":null,"width":"100%","blog_title":"\u30ed\u30d0\u306e\u8033","blog_url":"https://iken0.hatenadiary.org/","provider_name":"Hatena Blog","type":"rich","description":"IO#read([length]) \u3067\u30d0\u30a4\u30c8\u6570\u3092\u6307\u5b9a\u3067\u304d\u308b f = open('test.txt') p f.read(3) # 3\u30d0\u30a4\u30c8\u8aad\u3080 p f.read(1) f.close","categories":["ruby","file"]}