{"title":"Effective C++\u52c9\u5f37\u30e1\u30e2: Item 20 Pass-by-Const-Reference","blog_url":"https://zehnpaard.hatenablog.com/","author_url":"https://blog.hatena.ne.jp/zehnpaard/","image_url":null,"description":"Pass-by-value\u3068pass-by-const-reference\u306e\u3069\u3061\u3089\u304b\u8ff7\u3063\u305f\u6642\u306f\u5927\u62b5pass-by-const-reference\u3092\u9078\u307c\u3046\u3001\u3068\u3044\u3046\u9805\u76ee\u3002 void printName(MyObj o) { std::cout << o.name(); } void printName(const MyObj& o) { std::cout << o.name(); } \u524d\u8005\u304cpass-by-value\u3001\u5f8c\u8005\u304cpass-by-const-reference\u3002 pass-by-value\u306e\u5834\u5408\u3001\u5f15\u6570\u3068\u306a\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u81ea\u8eab\u306e\u30e1\u30f3\u30d0\u30c7\u30fc\u30bf\u306b\u52a0\u3048\u3001\u30e1\u30f3\u30d0\u30c7\u30fc\u30bf\u304c\u30dd\u30a4\u30f3\u30bf\u3060\u3063\u305f\u5834\u5408\u306a\u3069\u306f\u5927\u62b5\u2026","categories":["C++","Effective C++"],"version":"1.0","url":"https://zehnpaard.hatenablog.com/entry/2018/03/14/105339","width":"100%","published":"2018-03-14 10:53:39","author_name":"zehnpaard","height":"190","type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fzehnpaard.hatenablog.com%2Fentry%2F2018%2F03%2F14%2F105339\" title=\"Effective C++\u52c9\u5f37\u30e1\u30e2: Item 20 Pass-by-Const-Reference - Arantium Maestum\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","blog_title":"Arantium Maestum"}