{"categories":["Rust"],"image_url":null,"type":"rich","url":"https://qnighy.hatenablog.com/entry/2017/06/08/220000","provider_name":"Hatena Blog","width":"100%","published":"2017-06-08 22:00:00","provider_url":"https://hatena.blog","version":"1.0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fqnighy.hatenablog.com%2Fentry%2F2017%2F06%2F08%2F220000\" title=\"Rust\u306e\u69cb\u9020\u4f53/\u5217\u6319\u578b\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u4e26\u3079\u66ff\u3048 - \u7c21\u6f54\u306aQ\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://qnighy.hatenablog.com/","height":"190","author_name":"qnighy","author_url":"https://blog.hatena.ne.jp/qnighy/","description":"\u73fe\u5728\u306e\u5b89\u5b9a\u7248\u3067\u306f\u7121\u52b9\u5316\u3055\u308c\u3066\u3044\u308b\u304c\u3001Rust\u306ebeta/nightly\u306b\u306f\u69cb\u9020\u4f53/\u5217\u6319\u578b\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u81ea\u52d5\u4e26\u3079\u66ff\u3048\u304c\u5b9f\u88c5\u3055\u308c\u3066\u3044\u308b\u3002\u3053\u306e\u52d5\u4f5c\u3092\u8aac\u660e\u3059\u308b\u3002 \u4f8b \u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u66f8\u304f\u3068\u3001\u73fe\u5728\u306e\u5b89\u5b9a\u7248\u3067\u306f6\u304c\u8868\u793a\u3055\u308c\u3001beta/nightly\u3067\u306f4\u304c\u8868\u793a\u3055\u308c\u308b\u3002 use std::mem::size_of; struct A(u8, u16, u8); fn main() { println!(\"{}\", size_of::<A>()); // 6 or 4 } \u3053\u308c\u306f\u30a2\u30e9\u30a4\u30f3\u30e1\u30f3\u30c8\u3068\u95a2\u4fc2\u304c\u3042\u308b\u3002\u901a\u5e38 u8 \u306f1\u30d0\u30a4\u30c8\u3001 u16 \u306f2\u30d0\u30a4\u30c8\u306e\u5883\u754c\u306b\u63c3\u3048\u3089\u308c\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002\u305d\u306e\u305f\u3081\u3053\u306e\u69cb\u9020\u4f53/\u2026","title":"Rust\u306e\u69cb\u9020\u4f53/\u5217\u6319\u578b\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u4e26\u3079\u66ff\u3048","blog_title":"\u7c21\u6f54\u306aQ"}