{"url":"https://rils-k.hatenablog.com/entry/2021/02/01/175610","published":"2021-02-01 17:56:10","blog_url":"https://rils-k.hatenablog.com/","type":"rich","image_url":null,"version":"1.0","author_name":"rils_k","provider_name":"Hatena Blog","width":"100%","description":"swift \u914d\u5217 \u7279\u5b9a\u306e\u8981\u7d20\u304c\u4f55\u756a\u76ee\u306b\u3042\u308b\u304b\u3092\u691c\u7d22\u3059\u308b\u65b9\u6cd5 let array = [\"A\", \"B\", \"B\", \"B\", \"C\", \"D\"] //\u5148\u982d\u304b\u3089\u9806\u306b\u63a2\u3057\u3066\u884c\u3063\u3066\u6700\u521d\u306b\u898b\u3064\u304b\u3063\u305f\u3068\u304d\u306e\u914d\u5217\u756a\u53f7 let firstIndex = array.firstIndex(of: \"B\")! //1\u756a\u6700\u5f8c\u306e\u8981\u7d20\u304b\u3089\u9806\u306b\u63a2\u3057\u3066\u884c\u3063\u3066\u6700\u521d\u306b\u898b\u3064\u304b\u3063\u305f\u3068\u304d\u306e\u914d\u5217\u756a\u53f7 let lastIndex = array.lastIndex(of: \"B\")! print(firstIndex)//1 print(lastIndex)//3","categories":["Swift","Xcode"],"author_url":"https://blog.hatena.ne.jp/rils_k/","blog_title":"\u307e\u3060\u3069\u3053\u306b\u3082\u306a\u3044\u30a2\u30d7\u30ea\u3092\u4f5c\u308b","provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Frils-k.hatenablog.com%2Fentry%2F2021%2F02%2F01%2F175610\" title=\"swift \u914d\u5217\u3000\u4f55\u756a\u76ee\u306b\u3042\u308b\u304b\u3092\u53d6\u5f97firstIndex lastIndex - \u307e\u3060\u3069\u3053\u306b\u3082\u306a\u3044\u30a2\u30d7\u30ea\u3092\u4f5c\u308b\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":"swift \u914d\u5217\u3000\u4f55\u756a\u76ee\u306b\u3042\u308b\u304b\u3092\u53d6\u5f97firstIndex lastIndex","height":"190"}