{"image_url":null,"blog_url":"https://yohhoy.hatenadiary.jp/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fyohhoy.hatenadiary.jp%2Fentry%2F20260218%2Fp1\" title=\"unitbuf\u30de\u30cb\u30d4\u30e5\u30ec\u30fc\u30bf - yohhoy\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>","width":"100%","published":"2026-02-18 00:00:00","version":"1.0","url":"https://yohhoy.hatenadiary.jp/entry/20260218/p1","description":"C++\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u306eI/O\u30b9\u30c8\u30ea\u30fc\u30e0\u306b\u304a\u3051\u308b\u77e5\u540d\u5ea6\u306e\u4f4e\u3044\u30de\u30cb\u30d4\u30e5\u30ec\u30fc\u30bf(manipulator)\u3002*1\u51fa\u529b\u30b9\u30c8\u30ea\u30fc\u30e0\u306b\u5bfe\u3057\u3066\u51fa\u529b\u64cd\u4f5c\u6bce\u306e\u30d5\u30e9\u30c3\u30b7\u30e5(flush)\u3092\u6307\u793a\u3059\u308b\u3002*2 #include <iostream> int x = 42; std::cout << std::unitbuf; std::cout << \"x=\" << x << \"\\n\"; // operator<<\u547c\u3073\u51fa\u3057\u6bce\u306bflush\u3055\u308c\u308b \u6a19\u6e96\u30a8\u30e9\u30fc\u30b9\u30c8\u30ea\u30fc\u30e0std::cerr\u306f\u521d\u671f\u72b6\u614b\u3067std::ios_base::unitbuf\u30d5\u30e9\u30b0\u304c\u30bb\u30c3\u30c8\u3055\u308c\u3066\u3044\u308b\u3002*3C++03 27.3.1/p3-4, 27.4, 27.4\u2026","blog_title":"yohhoy\u306e\u65e5\u8a18","author_name":"yohhoy","author_url":"https://blog.hatena.ne.jp/yohhoy/","type":"rich","height":"190","provider_name":"Hatena Blog","title":"unitbuf\u30de\u30cb\u30d4\u30e5\u30ec\u30fc\u30bf","provider_url":"https://hatena.blog","categories":["C++"]}