{"id":472,"date":"2024-02-10T14:51:30","date_gmt":"2024-02-10T05:51:30","guid":{"rendered":"https:\/\/ha234.rundog.org\/?p=472"},"modified":"2024-02-10T16:29:53","modified_gmt":"2024-02-10T07:29:53","slug":"%e8%ac%9b%e7%be%a9%e3%83%a1%e3%83%a2-16","status":"publish","type":"post","link":"https:\/\/ha234.rundog.org\/?p=472","title":{"rendered":"\u8b1b\u7fa9\u30e1\u30e2"},"content":{"rendered":"

\u30fbp.212\u300c\u30a4\u30f3\u30c7\u30af\u30b5\u300d\u306e\u88dc\u8db3\u3068p.213\u300cindex01.cs\u300d\u304b\u3089<\/p>\n

p.212 \u30a4\u30f3\u30c7\u30af\u30b5\uff08\u518d\u63b2\u8f09\uff09<\/p>\n

\r\n\u30fb\u4e3b\u306b\u30c7\u30fc\u30bf\u30e1\u30f3\u30d0\u3067\u3042\u308b\u914d\u5217\u7b49\u3092\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u540c\u69d8\u306b\u6271\u3046\u4ed5\u639b\u3051\u304c\u30a4\u30f3\u30c7\u30af\u30b5\r\n\u30fb\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u306f\u7570\u306a\u308a\u3001\u30a4\u30f3\u30c7\u30af\u30b5\u306b\u306f\u540d\u524d\u304c\u306a\u304f\u300c\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u53c2\u7167\u5909\u6570[\u6dfb\u5b57]\u300d\u306e\u5f62\u5f0f\u3067\u3001\u914d\u5217\u306e\u8981\u7d20\u3092\u6271\u3048\u308b\r\n\u30fb\u5b9a\u7fa9\u66f8\u5f0f\uff1a public \u578b this[\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u578b \u30a4\u30f3\u30c7\u30c3\u30af\u30b9] { get {\u2026; return \u5024\u3084\u5f0f;} set {\u2026;} }\r\n\u3000\u203b \u578b\u306f\u6271\u3044\u305f\u3044\u914d\u5217\u7b49\u306b\u5408\u308f\u305b\u308b\r\n\u3000\u203b get\u306e\u4e2d\u306b\u304a\u3044\u3066\u914d\u5217\u7b49\u306e\u8981\u7d20[\u30a4\u30f3\u30c7\u30c3\u30af\u30b9]\u306e\u5024\u3092\u8fd4\u3059\r\n\u3000\u203b set\u306e\u4e2d\u3067\u306f\u5916\u90e8\u304b\u3089\u4e0e\u3048\u3089\u308c\u308b\u5024\u3092value\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u901a\u5e38\u3001\u3053\u308c\u3092\u8981\u7d20[\u30a4\u30f3\u30c7\u30c3\u30af\u30b9]\u306b\u4ee3\u5165\r\n\u30fb\u57fa\u672c\u7684\u306a\u5b9a\u7fa9\u66f8\u5f0f\uff1a public \u578b this[int i] { get {return \u914d\u5217\u540d[i];} set {\u914d\u5217\u540d[i] = value;} }\r\n\u30fb\u4ee3\u5165\u5f0f\u306e\u5de6\u8fba\u306b\u53c2\u7167\u5909\u6570[\u6dfb\u5b57]\u3092\u6307\u5b9a\u3059\u308b\u3068\u3001set\u306e\u5185\u5bb9\u304c\u5b9f\u884c\u3055\u308c\u308b\u3002\u4f8b\uff1a\u53c2\u7167\u5909\u6570[0] = \u5024;\r\n\u30fb\u4ee3\u5165\u5f0f\u306e\u5de6\u8fba\u4ee5\u5916\u306b\u53c2\u7167\u5909\u6570[\u6dfb\u5b57]\u3092\u6307\u5b9a\u3059\u308b\u3068\u3001get\u306e\u5185\u5bb9\u304c\u5b9f\u884c\u3055\u308c\u308b\u3002\u4f8b\uff1aConsole.Write(\u53c2\u7167\u5909\u6570[0]);<\/pre>\n
p.213 indexer01.cs<\/p>\n
\r\n\/\/p.213 indexer01.cs\r\nusing System;\r\nclass MyClass {\r\n    string[] name = new string[5]; \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u3067\u6271\u3044\u305f\u3044\u914d\u5217\r\n    public string this[int i] { \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u306e\u5b9a\u7fa9(\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f\u6574\u6570\u306ei)\r\n        get { return name[i]; }\r\n        set { name[i] = value; }\r\n    }\r\n}\r\nclass indexer01 {\r\n    public static void Main() {\r\n        MyClass mc = new MyClass();\r\n        mc[0] = "\u4e00\u90ce"; \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u7d4c\u7531\u3067name[0]\u306b\u4ee3\u5165\r\n        mc[1] = "\u6b21\u90ce"; \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u7d4c\u7531\u3067name[1]\u306b\u4ee3\u5165\r\n        mc[2] = "\u4e09\u90ce"; \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u7d4c\u7531\u3067name[2]\u306b\u4ee3\u5165\r\n        mc[3] = "\u56db\u90ce"; \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u7d4c\u7531\u3067name[3]\u306b\u4ee3\u5165\r\n        mc[4] = "\u4e94\u90ce"; \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u7d4c\u7531\u3067name[4]\u306b\u4ee3\u5165\r\n        for (int i = 0; i < 5; i++) {\r\n            Console.WriteLine(mc[i]); \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u7d4c\u7531\u3067name[0]\uff5e[4]\u3092\u5f97\u3066\u8868\u793a\r\n        }\r\n    }\r\n}<\/pre>\n
p.214\uff08\u30a4\u30f3\u30c7\u30af\u30b5\u3067\u6271\u3046\u69cb\u9020\u3092\u52d5\u7684\u306b\u751f\u6210\u3057\u305f\u3044\u5834\u5408\uff09<\/p>\n
\r\n\u30fb\u30a4\u30f3\u30c7\u30af\u30b5\u3067\u6271\u3044\u305f\u3044\u30c7\u30fc\u30bf\u69cb\u9020(\u4f8b\uff1a\u914d\u5217)\u306e\u5b9f\u4f53\u306f\u30af\u30e9\u30b9\u5185\u306b\u56fa\u5b9a\u9577\u3067\u914d\u7f6e\u3059\u308b\u5fc5\u8981\u306f\u306a\u3044\u3002\r\n\u30fb\u53c2\u7167\u306e\u307f\u3092\u5b9a\u7fa9\u3057\u3066\u304a\u3044\u3066\u3001\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u7b49\u3067\u8981\u7d20\u6570\u306e\u5206\u3060\u3051\u751f\u6210\u3059\u308c\u3070\u826f\u3044\u3002\r\n\u30fb\u305f\u3060\u3057\u3001\u8981\u7d20\u6570\u3092\u4fdd\u6301\u3059\u308b\u4ed5\u639b\u3051\u304c\u5fc5\u8981\u3002<\/pre>\n
p.214 indexer02.cs<\/p>\n
\r\n\/\/p.214 indexer02.cs\r\nusing System;\r\nclass MyIndexer {\r\n    int[] array; \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u3067\u6271\u3044\u305f\u3044\u914d\u5217\u306e\u5b9a\u7fa9(\u672a\u751f\u6210)\r\n    int nMax; \/\/\u8981\u7d20\u6570\r\n    public int this[int n] { \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u306e\u5b9a\u7fa9(\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f\u6574\u6570\u306ei)\r\n        get {\r\n            if (n < nMax) { \/\/\u8981\u7d20\u6570\u30c1\u30a7\u30c3\u30af\r\n                return array[n];\r\n            } else {\r\n                return 0;\r\n            }\r\n        }\r\n        set {\r\n            if (n < nMax) { \/\/\u8981\u7d20\u6570\u30c1\u30a7\u30c3\u30af\r\n                array[n] = value;\r\n            }\r\n        }\r\n    }\r\n    public MyIndexer(int i) { \/\/\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf(\u8981\u7d20\u6570)\r\n        array = new int[i]; \/\/\u8981\u7d20\u6570\u306e\u5206\u306e\u8981\u7d20\u3092\u751f\u6210\r\n        nMax = i; \/\/\u8981\u7d20\u6570\u3092\u30bb\u30c3\u30c8\r\n    }\r\n}\r\nclass indexer02 {\r\n    public static void Main() {\r\n        MyIndexer mi = new MyIndexer(20); \/\/\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3057\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u7d4c\u7531\u3067\u8981\u7d20\u6570\u3092\u6e21\u3059\r\n        for (int i = 0; i < 20; i++) { \/\/\u5168\u8981\u7d20\u306b\u3064\u3044\u3066\u7e70\u8fd4\u3059\r\n            mi[i] = i * i;\r\n        }\r\n        for (int i = 0; i < 20; i++) { \/\/\u5168\u8981\u7d20\u306b\u3064\u3044\u3066\u7e70\u8fd4\u3059\r\n            Console.WriteLine("{0} * {0} = {1}", i, mi[i]);\r\n        }\r\n        \/\/\u308f\u3056\u3068\u306b\u914d\u5217\u306e\u7bc4\u56f2\u3092\u8d85\u3048\u308b\r\n        mi[30] = 30; \/\/\u914d\u5217\u306a\u3089\u3070\u5b9f\u884c\u6642\u30a8\u30e9\u30fc\u3060\u304c\u3001\u30a4\u30f3\u30c7\u30af\u30b5\u306eset\u306b30\u304c\u6e21\u3055\u308c\u308b\u3060\u3051\r\n        Console.WriteLine("mi[30] = {0}", mi[30]);\r\n    }\r\n}<\/pre>\n
p.217 \u6587\u5b57\u5217\u3092\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3068\u3059\u308b\u30a4\u30f3\u30c7\u30af\u30b5<\/p>\n
\r\n\u30fb\u30a4\u30f3\u30c7\u30af\u30b5\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f\u6574\u6570\u5024\u3067\u3042\u308b\u5fc5\u8981\u306f\u306a\u3044\r\n\u30fb\u30a4\u30f3\u30c7\u30af\u30b5\u306e\u5b9a\u7fa9\u306e\u300cpublic int this[int n] {\u2026}\u300d\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3067\u3042\u308bn\u306e\u578b\u306fint\u3067\u306a\u304f\u3066\u3082\u826f\u3044<\/pre>\n
p.217 indexer03.cs<\/p>\n
\r\n\/\/p.217 indexer03.cs\r\nusing System;\r\nclass MyIndexer {\r\n    string[] mon = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug",\r\n        "Sep", "Oct", "Nov", "Dec"}; \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u3067\u6271\u3046\u6587\u5b57\u5217\u914d\u5217\r\n    public int this[string MonthName] { \/\/\u30a4\u30f3\u30c7\u30af\u30b9\u304c\u6587\u5b57\u5217\u578b\u3067\u3042\u308b\u30a4\u30f3\u30c7\u30af\u30b5(get\u306e\u307f)\r\n        get {\r\n            for (int i = 0; i < 12; i++) { \/\/\u6587\u5b57\u5217\u914d\u5217\u306e\u5168\u8981\u7d20\u306b\u3064\u3044\u3066\u7e70\u308a\u8fd4\u3059\r\n                if (MonthName == mon[i]) { \/\/\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3068\u4e00\u81f4\u3057\u305f\u3089\r\n                    return i + 1; \/\/\u6dfb\u5b57\u306b+1\u3057\u3066\u6708\u306b\u3057\u3066\u8fd4\u3059\r\n                }\r\n            }\r\n            return 0; \/\/\u5f53\u3066\u306f\u307e\u308b\u3082\u306e\u304c\u306a\u3051\u308c\u30700\u3092\u8fd4\u3059\r\n        }\r\n    }\r\n}\r\nclass indexer03 {\r\n    public static void Main() {\r\n        MyIndexer mi = new MyIndexer();\r\n        Console.WriteLine("May\u306f{0}\u756a\u76ee\u306e\u6708\u3067\u3059", mi["May"]); \/\/5\r\n        Console.WriteLine("Dec\u306f{0}\u756a\u76ee\u306e\u6708\u3067\u3059", mi["Dec"]); \/\/12\r\n        Console.WriteLine("x\u306f{0}\u756a\u76ee\u306e\u6708\u3067\u3059",   mi["x"]);   \/\/0\r\n    }\r\n}<\/pre>\n
p.218 \u591a\u6b21\u5143\u306e\u30a4\u30f3\u30c7\u30af\u30b5<\/p>\n
\r\n\u30fb\u30a4\u30f3\u30c7\u30af\u30b9\u3092\u8907\u6570\u6301\u3064\u591a\u6b21\u5143\u306e\u30a4\u30f3\u30c7\u30af\u30b5\u3092\u5b9a\u7fa9\u3067\u304d\u308b\r\n\u30fb\u591a\u6b21\u5143\u914d\u5217\u3068\u540c\u69d8\u306b\u5229\u7528\u3067\u304d\u308b<\/pre>\n
p.219 indexer04.cs<\/p>\n
\r\n\/\/p.219 indexer04.cs\r\nusing System;\r\nclass MyClass {\r\n    string[,] name; \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u3067\u6271\u3044\u305f\u3044\uff12\u6b21\u5143\u914d\u5217\u306e\u5b9a\u7fa9(\u672a\u751f\u6210)\r\n    public string this[int i, int j] { \/\/\uff12\u6b21\u5143\u30a4\u30f3\u30c7\u30af\u30b5\uff08set\u306f\u7121\u3044\uff09\r\n        get {\r\n            return name[i, j]; \/\/\uff12\u6b21\u5143\u914d\u5217\u306e\u8981\u7d20\u3092\u8fd4\u3059\r\n        }\r\n    }\r\n    public MyClass() { \/\/\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\r\n        name = new string[,]{{"\u7530\u4e2d", "\u4f50\u85e4", "\u5409\u7530", "\u52a0\u85e4", "\u7c82\u4e95"},\r\n                             {"\u5de5\u85e4", "\u7af9\u4e2d", "\u6589\u85e4", "\u592a\u7530", "\u6749\u672c"}}; \/\/2\u00d75\u306e\u4e8c\u6b21\u5143\u914d\u5217\u3092\u751f\u6210\r\n    }\r\n}\r\nclass indexer04 {\r\n    public static void Main() {\r\n        MyClass mc = new MyClass();\r\n        for (int i = 0; i < 2; i++) {\r\n            for (int j = 0; j < 5; j++) {\r\n                Console.WriteLine("{0}\u7d44{1}\u756a--{2}", i + 1, j + 1, mc[i, j]); \/\/\uff12\u6b21\u5143\u306e\u30a4\u30f3\u30c7\u30af\u30b5\u3067\u547c\u3076\r\n            }\r\n        }\r\n    }\r\n}<\/pre>\n
p.220 \u30a4\u30f3\u30c7\u30af\u30b5\u306e\u30aa\u30fc\u30d0\u30fc\u30ed\u30fc\u30c9<\/p>\n
\r\n\u30fb\u30a4\u30f3\u30c7\u30af\u30b5\u306f\u540d\u524d\u304c\u7121\u3044\u306e\u3067\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u6570\u3068\u578b\u304c\u30b7\u30b0\u30cb\u30c1\u30e3\u3068\u306a\u308b\r\n\u30fb\u3088\u3063\u3066\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u6570\u3068\u578b\u304c\u7570\u306a\u308b\u30a4\u30f3\u30c7\u30af\u30b5\u304c\u8907\u6570\u5b9a\u7fa9\u3067\u304d\u308b\r\n\u30fb\u3053\u308c\u3092\u30a4\u30f3\u30c7\u30af\u30b5\u306e\u30aa\u30fc\u30d0\u30fc\u30ed\u30fc\u30c9\u3068\u3044\u3046\r\n\u30fb\u30e1\u30bd\u30c3\u30c9\u306e\u5834\u5408\u3068\u540c\u69d8\u306b\u3001\u623b\u308a\u5024\u578b\u306f\u30b7\u30b0\u30cb\u30c1\u30e3\u306b\u542b\u307e\u308c\u306a\u3044\u306e\u3067\u6ce8\u610f\u3002<\/pre>\n
p.220 indexer05.cs<\/p>\n
\r\n\/\/p.220 indexer05.cs\r\nusing System;\r\nclass MyOverLoad {\r\n    int[] a = new int[3] { 1, 2, 3 }; \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u2460\u3067\u6271\u3046\uff11\u6b21\u5143\u914d\u5217\r\n    int[,] b = new int[2, 2] { { 100, 200 }, { 300, 400 } }; \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u2461\u3067\u6271\u3046\uff12\u6b21\u5143\u914d\u5217\r\n    public int this[int i] { \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u2460\r\n        get { return a[i]; } \/\/\uff11\u6b21\u5143\u914d\u5217\u306e\u8981\u7d20[\u30a4\u30f3\u30c7\u30c3\u30af\u30b9]\u3092\u8fd4\u3059\r\n    }\r\n    public int this[int i, int j] { \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u2461\r\n        get { return b[i, j]; } \/\/\uff12\u6b21\u5143\u914d\u5217\u306e\u8981\u7d20[\u30a4\u30f3\u30c7\u30c3\u30af\u30b9i,\u30a4\u30f3\u30c7\u30c3\u30af\u30b9j]\u3092\u8fd4\u3059\r\n    }\r\n}\r\nclass indexer05 {\r\n    public static void Main() {\r\n        MyOverLoad mo = new MyOverLoad();\r\n        for (int i = 0; i < 3; i++) { \/\/\uff11\u6b21\u5143\u914d\u5217\u306e\u69d8\u5b50\u6570\u306e\u5206\u3001\u7e70\u308a\u8fd4\u3059\r\n            Console.WriteLine("mo[{0}] = {1}", i, mo[i]);\r\n        }\r\n        for (int i = 0; i < 2; i++) { \/\/\uff12\u6b21\u5143\u914d\u5217\u306e\u5916\u5074\u306e\u69d8\u5b50\u6570\u306e\u5206\u3001\u7e70\u308a\u8fd4\u3059\r\n            for (int j = 0; j < 2; j++) { \/\/\uff12\u6b21\u5143\u914d\u5217\u306e\u5185\u5074\u306e\u69d8\u5b50\u6570\u306e\u5206\u3001\u7e70\u308a\u8fd4\u3059\r\n                Console.WriteLine("mo[{0}, {1}] = {2}", i, j, mo[i, j]);\r\n            }\r\n        }\r\n    }\r\n}<\/pre>\n
\u30a2\u30ec\u30f3\u30b8\u6f14\u7fd2\uff1ap.220 indexer05.cs<\/p>\n
\r\n\u30fb\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304c\u6574\u6570\u306e\u30a4\u30f3\u30c7\u30af\u30b5\u3068\u6587\u5b57\u5217\u306e\u30a4\u30f3\u30c7\u30af\u30b5\u304c\u5171\u5b58\u3067\u304d\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3088\u3046<\/pre>\n
\u4f5c\u6210\u4f8b<\/p>\n
\r\n\/\/\u30a2\u30ec\u30f3\u30b8\u6f14\u7fd2\uff1ap.220 indexer05.cs\r\nusing System;\r\nclass MyOverLoad {\r\n    string[] a = new string[3] { "amuro", "shar", "ryu" }; \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u2460\u2461\u3067\u6271\u3046\uff11\u6b21\u5143\u914d\u5217\r\n    public string this[int i] { \/\/int\u578b\u306e\u30a4\u30f3\u30c7\u30af\u30b5\u2460<\/font>\r\n        get { return a[i]; } \/\/\u914d\u5217\u306e\u8981\u7d20[\u30a4\u30f3\u30c7\u30c3\u30af\u30b9]\u3092\u8fd4\u3059\r\n    }\r\n    public int this[string s] { \/\/string\u578b\u306e\u30a4\u30f3\u30c7\u30af\u30b5\u2461<\/font>\r\n        get { \/\/\u914d\u5217\u306e\u8981\u7d20[\u6dfb\u5b57]\u3068\u4e00\u81f4\u3057\u305f\u3089\u6dfb\u5b57\u3092\u8fd4\u3059\r\n            for (int i = 0; i < a.Length; i++) {\r\n                if(a[i] == s) return i; \r\n            }\r\n            return -1; \/\/\u4e00\u81f4\u3059\u308b\u3082\u306e\u304c\u306a\u3051\u308c\u3070-1\u3092\u8fd4\u3059\r\n        } \r\n    }\r\n}\r\nclass indexer05 {\r\n    public static void Main() {\r\n        MyOverLoad mo = new MyOverLoad();\r\n        Console.WriteLine("mo[1] = {0}", mo[1]); \/\/int\u578b\u306e\u30a4\u30f3\u30c7\u30af\u30b5\u2460\u3092\u7528\u3044\u308b\r\n        Console.WriteLine("mo[\\"shar\\"] = {0}", mo["shar"]); \/\/string\u578b\u306e\u30a4\u30f3\u30c7\u30af\u30b5\u2461\u3092\u7528\u3044\u308b<\/font>\r\n    }\r\n}<\/pre>\n
p.222 \u7df4\u7fd2\u554f\u984c\uff11 \u30d2\u30f3\u30c8<\/p>\n
\r\n\u30fbp.209 prop02.cs\u3092\u5358\u7d14\u5316\u3059\u308b\u3068\u826f\u3044\r\n\u30fbdouble\u578b\u306e\u30c7\u30fc\u30bf\u30e1\u30f3\u30d0\u3092\uff11\u500b\u306e\u307f\u6301\u3064\u30af\u30e9\u30b9\u3068\u3057\u3001\uff12\u3064\u76ee\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3084BMI\u8a08\u7b97\u306f\u5272\u611b\u3059\u308b\r\n\u30fbdouble\u578b\u306e\u30c7\u30fc\u30bf\u30e1\u30f3\u30d0\u306b\u9069\u5f53\u306a\u521d\u671f\u5024\u3092\u4e0e\u3048\u3066\u304a\u304d\u3001\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u8ca0\u306e\u6570\u30840\u3092\u4e0e\u3048\u3066\u3001\u5024\u304c\u5909\u5316\u3057\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3088\u3046<\/pre>\n
\u4f5c\u6210\u4f8b<\/p>\n
\r\n\/\/p.222 \u7df4\u7fd2\u554f\u984c\uff11\r\nusing System;\r\nclass BMI {\r\n    double bl; \/\/\u975e\u516c\u958b\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5909\u6570\uff1a\u8eab\u9577\r\n    public double blprop { \/\/\u8eab\u9577\u7528\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\r\n        get { return bl; }\r\n        set {\r\n            if (value <= 0) { \/\/\u4ee3\u5165\u5024\u304c0\u4ee5\u4e0b\uff1f\r\n                return; \/\/\u7d42\u308f\u3063\u3066\u623b\u308b\r\n            }\r\n            bl = value; \/\/\u8eab\u9577\u306b\u4ee3\u5165\u5024\u3092\u4ee3\u5165\r\n        }\r\n    }\r\n}\r\nclass prop02 {\r\n    public static void Main() {\r\n        BMI mybmi = new BMI();\r\n        mybmi.blprop = 175.2; \/\/\u30d7\u30ed\u30d1\u30c6\u30a3\u7d4c\u7531\u3067set\u3092\u5b9f\u884c\r\n        Console.WriteLine("bl = {0}" ,mybmi.blprop); \/\/\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u8eab\u9577\u3092\u5f97\u3066\u8868\u793a\r\n        mybmi.blprop = -90.3; \/\/\u30d7\u30ed\u30d1\u30c6\u30a3\u7d4c\u7531\u3067set\u3092\u5b9f\u884c(\u8ca0\u306e\u6570\u306a\u306e\u3067\u8a2d\u5b9a\u3055\u308c\u306a\u3044)\r\n        Console.WriteLine("bl = {0}" ,mybmi.blprop); \/\/\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u8eab\u9577\u3092\u5f97\u3066\u8868\u793a<\/font>\r\n    }\r\n}<\/pre>\n
p.222 \u7df4\u7fd2\u554f\u984c\uff12 \u30d2\u30f3\u30c8<\/p>\n
\r\n\u30fb\u554f\u984c\u6587\u306b\u793a\u3055\u308c\u3066\u3044\u306a\u3044\u4ed5\u69d8\u306f\u81ea\u7531\u306b\u6c7a\u3081\u3066\u826f\u3044\u3002\u4e0b\u8a18\u306f\u4e00\u4f8b\u3002\r\n\u30fb\u751f\u5f92\u6570\uff1d\u914d\u5217\u306e\u8981\u7d20\u6570\u3092\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf(int)\u3067\u53d7\u3051\u53d6\u308b\r\n\u30fbstring\u578b\u306e\u751f\u5f92\u540d\u306e\u914d\u5217\u3092\u521d\u671f\u5316\u3059\u308b\r\n\u30fb\u540c\u3058\u8981\u7d20\u6570\u306eint\u578b\u306e\u70b9\u6570\u306e\u914d\u5217\u3092\u751f\u6210\u3059\u308b\r\n\u30fb\u30a4\u30f3\u30c7\u30af\u30b5[string]\u3092\u5b9a\u7fa9\u3059\u308b\r\n\u3000\u30fbget\u3067\u306f\u751f\u5f92\u540d\u306e\u914d\u5217\u3092\u8abf\u3079\u3066\u3001\u3042\u308c\u3070\u305d\u306e\u6dfb\u5b57\u3092\u7528\u3044\u3066\u3001\u70b9\u6570\u306e\u914d\u5217[\u6dfb\u5b57]\u306e\u5024\u3092\u8fd4\u3059\r\n\u3000\u30fb\u306a\u3051\u308c\u3070(\u751f\u5f92\u540d\u304cnull\u306b\u306a\u3063\u305f\u3089)\u3001-1\u3092\u8fd4\u3059\r\n\u3000\u30fbset\u3067\u306f\u751f\u5f92\u540d\u306e\u914d\u5217\u3092\u8abf\u3079\u3066\u3001\u3042\u308c\u3070\u305d\u306e\u6dfb\u5b57\u3092\u7528\u3044\u3066\u3001\u70b9\u6570\u306e\u914d\u5217[\u6dfb\u5b57]\u306e\u5024\u3092value\u306b\u5909\u66f4\r\n\u3000\u30fb\u306a\u3051\u308c\u3070(\u751f\u5f92\u540d\u304cnull\u306b\u306a\u3063\u305f\u3089)\u3001\u305d\u306e\u6dfb\u5b57\u3092\u7528\u3044\u3066\u3001\u751f\u5f92\u540d\u306e\u914d\u5217[\u6dfb\u5b57]\u306b\u540d\u524d\u3092\u3001\u70b9\u6570\u306e\u914d\u5217[\u6dfb\u5b57]\u306b\u70b9\u6570\u3092\u683c\u7d0d\r\n\u3000\u203b \u306a\u304f\u3066\u751f\u5f92\u540d\u304cnull\u306b\u306a\u3063\u3066\u306a\u3051\u308c\u3070\u6e80\u54e1\u306a\u306e\u3067\u3001\u305d\u306e\u65e8\u3092\u8868\u793a\u3059\u308b<\/pre>\n
\u4f5c\u6210\u4f8b<\/p>\n
\r\n\/\/p.222 \u7df4\u7fd2\u554f\u984c\uff12\r\nusing System;\r\nclass Exam {\r\n    string[] name; \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u3067\u6271\u3046\u540d\u524d\u306e\u914d\u5217\r\n    int[] point; \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u3067\u6271\u3046\u70b9\u6570\u306e\u914d\u5217\r\n    int num = 0; \/\/\u751f\u5f92\u6570\r\n    public int this[string s] { \/\/\u540d\u524d\u3092\u30a4\u30f3\u30c7\u30af\u30b9\u3068\u3057\u3066\u70b9\u6570\u3092\u6271\u3046\u30a4\u30f3\u30c7\u30af\u30b5\r\n        get { \r\n            for (int i = 0; i < num; i++) { \/\/\u5168\u751f\u5f92\u306b\u3064\u3044\u3066\u7e70\u8fd4\u3059\r\n                if(name[i] == s) { \/\/\u540d\u524d\u304c\u4e00\u81f4\uff1f\r\n                    return point[i]; \/\/\u305d\u306e\u70b9\u6570\u3092\u8fd4\u3059\r\n                } else if (name[i] == null) { \/\/\u7a7a\uff1f\r\n                    break; \/\/\u7e70\u8fd4\u3057\u7d42\u4e86\r\n                }\r\n            }\r\n            return -1; \/\/\u540d\u524d\u304c\u4e00\u81f4\u3057\u306a\u3051\u308c\u3070-1\u3092\u8fd4\u3059\r\n        }\r\n        set {\r\n            for (int i = 0; i < num; i++) { \/\/\u5168\u751f\u5f92\u306b\u3064\u3044\u3066\u7e70\u8fd4\u3059\r\n                if (name[i] == null) { \/\/\u4e00\u81f4\u305b\u305a\u7a7a\u304d\u304c\u6709\u308b\uff1f\r\n                    name[i] = s; \/\/\u540d\u524d\u3092\u683c\u7d0d\r\n                    point[i] = value; \/\/\u305d\u306e\u70b9\u6570\u3092\u683c\u7d0d\r\n                    return; \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u3092\u629c\u3051\u308b\r\n                } else if(name[i] == s) { \/\/\u540d\u524d\u304c\u4e00\u81f4\uff1f\r\n                    point[i] = value; \/\/\u305d\u306e\u70b9\u6570\u3092\u66f4\u65b0\r\n                    return; \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u3092\u629c\u3051\u308b\r\n                }\r\n            }\r\n            Console.WriteLine("\u6e80\u54e1\uff01");\r\n        }\r\n    }<\/font>\r\n    public Exam(int num) { \/\/\u751f\u5f92\u6570\u3092\u53d7\u3051\u53d6\u308b\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\r\n        this.num = num;\r\n        name = new string[num]; \/\/\u540d\u524d\u306e\u914d\u5217\u3092\u751f\u6210\r\n        point = new int[num]; \/\/\u70b9\u6570\u306e\u914d\u5217\u3092\u751f\u6210\r\n    }\r\n    public void show() {\r\n        for (int i = 0; i < num; i++) {\r\n            if (name[i] != null) { \/\/\u7a7a\u3067\u306a\u3051\u308c\u3070\r\n                Console.Write("{0}:{1}, ", name[i], point[i]);\r\n            }\r\n        }\r\n        Console.WriteLine(); \/\/\u6539\u884c\r\n    }\r\n}\r\nclass indexer05 {\r\n    public static void Main() {\r\n        Exam e = new Exam(4);\r\n        e["amuro"] = 60;\r\n        e.show(); \/\/\u300camuro:60,\u300d\r\n        e["shar"] = 70;\r\n        e.show(); \/\/\u300camuro:60, shar:70,\u300d \r\n        e["amuro"] = 80;\r\n        e.show(); \/\/\u300camuro:80, shar:70,\u300d\r\n        e["bright"] = 90;\r\n        e.show(); \/\/\u300camuro:80, shar:70, bright:90,\u300d\r\n        e["ryu"] = 50;\r\n        e.show(); \/\/\u300camuro:80, shar:70, bright:90, ryu:50,\u300d\r\n        e["kai"] = 40; \/\/\u300c\u6e80\u54e1\uff01\u300d\r\n        e.show(); \/\/\u300camuro:60, shar:70, bright:90, ryu:50,\u300d\r\n    }\r\n}<\/pre>\n","protected":false},"excerpt":{"rendered":"
\u30fbp.212\u300c\u30a4\u30f3\u30c7\u30af\u30b5\u300d\u306e\u88dc\u8db3\u3068p.213\u300cindex01.cs\u300d\u304b\u3089 p.212 \u30a4\u30f3\u30c7\u30af\u30b5\uff08\u518d\u63b2\u8f09\uff09 \u30fb\u4e3b\u306b\u30c7\u30fc\u30bf\u30e1\u30f3\u30d0\u3067\u3042\u308b\u914d\u5217\u7b49\u3092\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u540c\u69d8\u306b\u6271\u3046\u4ed5\u639b\u3051\u304c\u30a4\u30f3\u30c7\u30af\u30b5 \u30fb\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u306f\u7570\u306a\u308a\u3001\u30a4\u30f3\u30c7\u30af\u30b5\u306b\u306f\u540d\u524d\u304c\u306a\u304f\u300c\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u53c2\u7167\u5909\u6570[\u6dfb\u5b57]\u300d\u306e\u5f62\u5f0f\u3067\u3001\u914d\u5217\u306e\u8981\u7d20\u3092\u6271\u3048\u308b \u30fb\u5b9a\u7fa9\u66f8\u5f0f\uff1a public \u578b this[\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u578b \u30a4\u30f3\u30c7\u30c3\u30af\u30b9] { get {\u2026; return \u5024\u3084\u5f0f;} set {\u2026;} } \u3000\u203b \u578b\u306f\u6271\u3044\u305f\u3044\u914d\u5217\u7b49\u306b\u5408\u308f\u305b\u308b \u3000\u203b get\u306e\u4e2d\u306b\u304a\u3044\u3066\u914d\u5217\u7b49\u306e\u8981\u7d20[\u30a4\u30f3\u30c7\u30c3\u30af\u30b9]\u306e\u5024\u3092\u8fd4\u3059 \u3000\u203b set\u306e\u4e2d\u3067\u306f\u5916\u90e8\u304b\u3089\u4e0e\u3048\u3089\u308c\u308b\u5024\u3092value\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u901a\u5e38\u3001\u3053\u308c\u3092\u8981\u7d20[\u30a4\u30f3\u30c7\u30c3\u30af\u30b9]\u306b\u4ee3\u5165 \u30fb\u57fa\u672c\u7684\u306a\u5b9a\u7fa9\u66f8\u5f0f\uff1a public \u578b this[int i] { get {return \u914d\u5217\u540d[i];} set {\u914d\u5217\u540d[i] = value;} } \u30fb\u4ee3\u5165\u5f0f\u306e\u5de6\u8fba\u306b\u53c2\u7167\u5909\u6570[\u6dfb\u5b57]\u3092\u6307\u5b9a\u3059\u308b\u3068\u3001set\u306e\u5185\u5bb9\u304c\u5b9f\u884c\u3055\u308c\u308b\u3002\u4f8b\uff1a\u53c2\u7167\u5909\u6570[0] = \u5024; \u30fb\u4ee3\u5165\u5f0f\u306e\u5de6\u8fba\u4ee5\u5916\u306b\u53c2\u7167\u5909\u6570[\u6dfb\u5b57]\u3092\u6307\u5b9a\u3059\u308b\u3068\u3001get\u306e\u5185\u5bb9\u304c\u5b9f\u884c\u3055\u308c\u308b\u3002\u4f8b\uff1aConsole.Write(\u53c2\u7167\u5909\u6570[0]); p.213 indexer01.cs \/\/p.213 indexer01.cs using System; class MyClass {     string[] name = new string[5]; \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u3067\u6271\u3044\u305f\u3044\u914d\u5217     public string this[int i] { \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u306e\u5b9a\u7fa9(\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f\u6574\u6570\u306ei)         get { return name[i]; }         set { name[i] = value; }     } } class indexer01 {     public static void Main() {         MyClass mc = new MyClass();         mc[0] = "\u4e00\u90ce"; \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u7d4c\u7531\u3067name[0]\u306b\u4ee3\u5165         mc[1] = "\u6b21\u90ce"; \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u7d4c\u7531\u3067name[1]\u306b\u4ee3\u5165         mc[2] = "\u4e09\u90ce"; \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u7d4c\u7531\u3067name[2]\u306b\u4ee3\u5165         mc[3] = "\u56db\u90ce"; \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u7d4c\u7531\u3067name[3]\u306b\u4ee3\u5165         mc[4] = "\u4e94\u90ce"; \/\/\u30a4\u30f3\u30c7\u30af\u30b5\u7d4c\u7531\u3067name[4]\u306b\u4ee3\u5165         for… <\/p>\n
Read the full article<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"templates\/full-width.php","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-472","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/ha234.rundog.org\/index.php?rest_route=\/wp\/v2\/posts\/472","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ha234.rundog.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ha234.rundog.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ha234.rundog.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ha234.rundog.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=472"}],"version-history":[{"count":13,"href":"https:\/\/ha234.rundog.org\/index.php?rest_route=\/wp\/v2\/posts\/472\/revisions"}],"predecessor-version":[{"id":485,"href":"https:\/\/ha234.rundog.org\/index.php?rest_route=\/wp\/v2\/posts\/472\/revisions\/485"}],"wp:attachment":[{"href":"https:\/\/ha234.rundog.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=472"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ha234.rundog.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=472"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ha234.rundog.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=472"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}