{"url":"https://faithandbrave.hateblo.jp/entry/2014/02/04/150534","image_url":null,"description":"\u305b\u3063\u304b\u304f\u53ef\u5909\u5f15\u6570\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u304c\u3042\u308b\u306e\u3060\u304b\u3089\u3001\u8907\u6570\u306eRange\u306b\u5bfe\u3059\u308b\u64cd\u4f5c\u3092\u884c\u3046\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3082\u3042\u3063\u3066\u3044\u3044\u3093\u3058\u3083\u306a\u3044\u304b\u3068\u601d\u3063\u305f\u3002 \u4ee5\u4e0b\u306f\u3001\u8907\u6570\u306emap\u304b\u3089\u691c\u7d22\u3092\u884c\u3046join_find()\u95a2\u6570\u3002 optional<T> join_find(key, m1, m2, ...); #include <boost/optional.hpp> template <class Key, class Map> auto join_find(const Key& key, const Map& map) -> boost::optional<typename Map::mapped_type> { auto it\u2026","categories":["C++"],"title":"join_find","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ffaithandbrave.hateblo.jp%2Fentry%2F2014%2F02%2F04%2F150534\" title=\"join_find - Faith and Brave - C++\u3067\u904a\u307c\u3046\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_url":"https://blog.hatena.ne.jp/faith_and_brave/","width":"100%","published":"2014-02-04 15:05:34","blog_url":"https://faithandbrave.hateblo.jp/","provider_name":"Hatena Blog","blog_title":"Faith and Brave - C++\u3067\u904a\u307c\u3046","height":"190","type":"rich","provider_url":"https://hatena.blog","author_name":"faith_and_brave","version":"1.0"}