{"published":"2004-07-16 00:00:01","title":"reserve + push_back","blog_title":"Cry's Blog","blog_url":"https://blog.cryolite.net/","provider_name":"Hatena Blog","categories":[],"provider_url":"https://hatena.blog","version":"1.0","image_url":null,"type":"rich","description":"std::vector v; v.reserve(sz); for(int i = 0; i \u901a\u5e38\uff0cfor\u6587\u306b\u3088\u308b\u660e\u793a\u7684\u306a\u30eb\u30fc\u30d7\u306b\u3088\u308b\u4ee3\u5165\u3068memcpy\u3068\u306e\u6bd4\u8f03\u3067\u306f\u5727\u5012\u7684\u306b\u5f8c\u8005\u306b\u8ecd\u914d\u304c\u4e0a\u304c\u308a\u307e\u3059\uff0e\u3053\u308c\u306fmemcpy\u304c\u5b9f\u88c5\u4e0a\u306e\u6700\u9069\u5316\u3092\u8a31\u3055\u308c\u3066\u3044\u308b\u304b\u3089\u3067\u3059\uff0e\uff08\u78ba\u304bC\u306b\u95a2\u3059\u308b\u672c\u3067\u3053\u306ememcpy\u306b\u95a2\u3057\u3066\u8ad6\u3058\u3066\u3044\u305f\u3082\u306e\u304c\u3042\u3063\u3066\u305d\u308c\u3092\u8aad\u3093\u3060\u899a\u3048\u304c\u3042\u308b\u306e\u3067\u3059\u304c\u30bf\u30a4\u30c8\u30eb\u3092\u5931\u5ff5\u3057\u3066\u3057\u307e\u3044\u307e\u3057\u305f\uff0e\uff09\u4e0a\u306e\u30b3\u30fc\u30c9\u3067\u306freserve\u306b\u3088\u3063\u3066\u3042\u3089\u304b\u3058\u3081\u5185\u90e8\u30d0\u30c3\u30d5\u30a1\u3092\u4f38\u5f35\u3057\u3066\u304a\u304d\uff0cpush_back\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067vector\u5185\u90e8\u306e\u30d0\u30c3\u30d5\u30a1\u306e\u518d\u914d\u7f6e\uff08\u3068\u305d\u308c\u306b\u4f34\u3046delete & new\uff0c\u8981\u7d20\u306e\u30b3\u30d4\u30fc\uff09\u3092\u907f\u3051\u3066\u3044\u307e\u3059\uff0e\u304c\uff0c\u2026","url":"https://blog.cryolite.net/entry/20040716/p2","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.cryolite.net%2Fentry%2F20040716%2Fp2\" title=\"reserve + push_back - Cry&#39;s Blog\" 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":"Cryolite","height":"190","width":"100%","author_url":"https://blog.hatena.ne.jp/Cryolite/"}