{"blog_url":"https://www.aipacommander.com/","url":"https://www.aipacommander.com/entry/2015/12/24/130204","author_url":"https://blog.hatena.ne.jp/aipacommander/","blog_title":"IT\u306e\u968a\u9577\u306e\u30d6\u30ed\u30b0","version":"1.0","type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.aipacommander.com%2Fentry%2F2015%2F12%2F24%2F130204\" title=\"\u3010Swift\u3011indexOf\u307f\u305f\u3044\u306a\u51e6\u7406\u3092\u66f8\u304f - IT\u306e\u968a\u9577\u306e\u30d6\u30ed\u30b0\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2015-12-24 13:02:04","provider_url":"https://hatena.blog","categories":["Swift"],"description":"\u66f8\u304f\u3064\u3063\u3066\u3082\u3042\u3063\u305f\u3093\u3060\u3051\u3069\u306d let target: String = \"C\" // \u63a2\u3059\u6587\u5b57 let str: String = \"ABCDE\" // \u63a2\u3059\u5bfe\u8c61\u306e\u6587\u5b57\u5217 let strs: [String] = str.characters.map { String($0) } // indexOf\u3059\u308b\u305f\u3081\u306b\u914d\u5217\u5316\u3059\u308b let index = strs.indexOf(target) // \u304a\u306a\u3058\u307findexOf Optional\u306eInt\u304c\u8fd4\u308b print(index!) // 2","width":"100%","height":"190","author_name":"aipacommander","title":"\u3010Swift\u3011indexOf\u307f\u305f\u3044\u306a\u51e6\u7406\u3092\u66f8\u304f","image_url":"http://cdn.mogile.archive.st-hatena.com/v1/image/aipacommander/297789129598967254.gif","provider_name":"Hatena Blog"}