{"id":53012,"date":"2025-08-11T22:44:46","date_gmt":"2025-08-11T14:44:46","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/53012.html"},"modified":"2025-08-11T22:44:46","modified_gmt":"2025-08-11T14:44:46","slug":"c%e7%9f%a5%e8%af%86%e5%ad%a6%e4%b9%a0-008%ef%bc%88%e7%bb%93%e6%9e%84%e7%b1%bb%e5%9e%8b%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/53012.html","title":{"rendered":"C#\u77e5\u8bc6\u5b66\u4e60-008\uff08\u200b\u200b\u7ed3\u6784\u7c7b\u578b\uff09"},"content":{"rendered":"

1.\u6982\u5ff5<\/span><\/h2>\n

\u7ed3\u6784\u7c7b\u578b（\u6216 struct type）\u662f\u4e00\u79cd\u53ef\u5c01\u88c5\u6570\u636e\u548c\u76f8\u5173\u529f\u80fd\u7684\u503c\u7c7b\u578b\u3002\u7b80\u5355\u6765\u8bf4：\u5f53\u4f60\u521b\u5efa\u4e00\u4e2a\u00a0struct\u53d8\u91cf\u65f6，\u8fd9\u4e2a\u53d8\u91cf\u200b\u200b\u76f4\u63a5\u5b58\u50a8\u4e86\u6574\u4e2a\u6570\u636e\u7684\u5185\u5bb9\u200b\u200b\u3002<\/p>\n

struct\u4e3b\u8981\u7528\u4e8e\u5c01\u88c5\u200b\u200b\u8f7b\u91cf\u7ea7\u7684\u6570\u636e\u96c6\u5408\u200b\u200b（\u5982\u5750\u6807\u3001\u70b9\u3001\u989c\u8272\u3001\u65e5\u671f），\u5b83\u901a\u5e38\u5305\u542b\u7684\u6570\u636e\u4e0d\u591a，\u4e14\u6ca1\u6709\u590d\u6742\u7684\u884c\u4e3a，\u4e3e\u4f8b\u5982\u4e0b：<\/p>\n

public struct Coords
\n{
\n \/\/\u8fd9\u662f\u4e00\u4e2a\u6784\u9020\u51fd\u6570，\u7528\u4e8e\u521b\u5efaCoords\u7ed3\u6784\u7684\u65b0\u5b9e\u4f8b
\n \/\/\u5b83\u63a5\u53d7\u4e24\u4e2adouble\u7c7b\u578b\u7684\u53c2\u6570：x\u548cy,\u8d4b\u7ed9\u5bf9\u5e94\u7684\u5c5e\u6027X\u548cY
\n public Coords(double x, double y)
\n {
\n X = x;
\n Y = y;
\n }<\/p>\n

public double X { get; set; } \/\/ \u81ea\u52a8\u5b9e\u73b0\u5c5e\u6027 X
\n public double Y { get; set; } \/\/ \u81ea\u52a8\u5b9e\u73b0\u5c5e\u6027 Y
\n}<\/p>\n

1.1 public<\/span><\/h3>\n

public\u8fd9\u4e2a\u5173\u952e\u5b57，\u5b83\u662f C# \u4e2d\u975e\u5e38\u91cd\u8981\u7684\u4e00\u4e2a\u6982\u5ff5\u2014\u2014\u200b\u200b\u8bbf\u95ee\u4fee\u9970\u7b26\u200b\u200b<\/p>\n

\u60f3\u8c61\u4e00\u4e0b\u4f60\u4f4f\u7684\u623f\u5b50：<\/span><\/p>\n

    \n
  • \n

    \u6709\u4e9b\u623f\u95f4（\u6bd4\u5982\u5ba2\u5385）\u662f \u200b\u200b\u516c\u5f00 (public)\u200b\u200b \u7684，\u4efb\u4f55\u4eba\u90fd\u53ef\u4ee5\u8fdb\u6765\u3002<\/span><\/p>\n<\/li>\n

  • \n

    \u6709\u4e9b\u623f\u95f4（\u6bd4\u5982\u4f60\u7684\u5367\u5ba4）\u662f \u200b\u200b\u79c1\u6709 (private)\u200b\u200b \u7684，\u53ea\u6709\u4f60\u81ea\u5df1\u6216\u8005\u4f60\u5141\u8bb8\u7684\u4eba\u624d\u80fd\u8fdb\u3002<\/span><\/p>\n<\/li>\n

  • \n

    \u8fd8\u6709\u4e00\u4e9b\u533a\u57df（\u6bd4\u5982\u5bb6\u91cc\u7684\u4e66\u623f）\u53ef\u80fd\u662f \u200b\u200b\u53d7\u4fdd\u62a4 (protected)\u200b\u200b \u7684，\u53ea\u6709\u4f60\u548c\u4f60\u7684\u5bb6\u4eba（\u5b50\u7c7b）\u53ef\u4ee5\u7528\u3002<\/span><\/p>\n<\/li>\n

  • \n

    \u6216\u8005\u50cf\u5c0f\u533a\u91cc\u7684\u516c\u5171\u8bbe\u65bd，\u53ea\u6709\u672c\u5c0f\u533a\u7684\u4f4f\u6237（\u540c\u4e00\u4e2a\u7a0b\u5e8f\u96c6）\u53ef\u4ee5\u7528，\u8fd9\u53eb \u200b\u200b\u5185\u90e8 (internal)\u200b\u200b\u3002<\/span><\/p>\n<\/li>\n<\/ul>\n

    \u5982\u679c\u4f8b\u5b50\u4e2d\u53bb\u6389public：<\/p>\n

    struct Coords \/\/ \u6ca1\u6709 public -> \u9ed8\u8ba4 private!
    \n{
    \n Coords(double x, double y) \/\/ \u6ca1\u6709 public -> \u9ed8\u8ba4 private!
    \n {
    \n X = x;
    \n Y = y;
    \n }<\/p>\n

    double X { get; set; } \/\/ \u6ca1\u6709 public -> \u9ed8\u8ba4 private!
    \n double Y { get; set; } \/\/ \u6ca1\u6709 public -> \u9ed8\u8ba4 private!
    \n}<\/p>\n

    \u5982\u679c\u4f60\u60f3\u5728\u00a0Coords\u7ed3\u6784\u5916\u90e8\u521b\u5efa\u4e00\u4e2a\u5750\u6807\u70b9，\u4f1a\u62a5\u9519，\u56e0\u4e3aCoords\u7684\u6784\u9020\u51fd\u6570\u662f\u00a0private\u7684，\u6ca1\u6709\u6743\u9650\u8c03\u7528\u5b83！<\/p>\n

    Coords myPoint = new Coords(1.0, 2.0); \/\/ \u8fd9\u884c\u4f1a\u62a5\u9519！<\/p>\n

    \u5982\u4f55\u9009\u62e9\u5462？<\/span><\/p>\n

      \n
    • \n

      \u60f3\u8ba9\u522b\u4eba（\u5176\u4ed6\u4ee3\u7801）\u80fd\u7528\u4f60\u7684\u4e1c\u897f（\u7c7b\u3001\u65b9\u6cd5\u3001\u5c5e\u6027）？ \u27a1\ufe0f \u52a0\u4e0a\u00a0public\u3002<\/span><\/p>\n<\/li>\n

    • \n

      \u60f3\u628a\u8fd9\u4e2a\u4e1c\u897f\u85cf\u8d77\u6765，\u53ea\u7ed9\u81ea\u5df1（\u5f53\u524d\u7c7b\/\u7ed3\u6784）\u7528？ \u27a1\ufe0f \u7528\u00a0private（\u6216\u8005\u4e0d\u5199\u4fee\u9970\u7b26）\u3002<\/span><\/p>\n<\/li>\n

    • \n

      \u60f3\u53ea\u7ed9\u540c\u4e00\u4e2a\u9879\u76ee（\u7a0b\u5e8f\u96c6）\u91cc\u7684\u4ee3\u7801\u7528？ \u27a1\ufe0f \u7528\u00a0internal\u3002<\/span><\/p>\n<\/li>\n

    • \n

      \u60f3\u53ea\u7ed9\u7ee7\u627f\u4f60\u7684\u5b50\u7c7b\u7528？ \u27a1\ufe0f \u7528\u00a0protected\u3002<\/span><\/p>\n<\/li>\n<\/ul>\n

      1.2\u00a0\u81ea\u52a8\u5b9e\u73b0\u5c5e\u6027<\/span><\/h3>\n

      \u4f8b\u5b50\u4e2d\u7684\u81ea\u52a8\u5b9e\u73b0\u5c5e\u6027（Auto-Implemented Property）\u58f0\u660e：public double X { get; set; }<\/p>\n

      double\u200b\u200b：\u8868\u793a\u8fd9\u4e2a\u5c5e\u6027\u7684\u6570\u636e\u7c7b\u578b\u662f\u53cc\u7cbe\u5ea6\u6d6e\u70b9\u6570\u3002\u200b\u200bX\u200b\u200b：\u5c5e\u6027\u7684\u540d\u79f0\u3002<\/p>\n

      \u200b\u200b{ get; set; }\u200b\u200b：\u8fd9\u662f\u5c5e\u6027\u7684\u8bbf\u95ee\u5668（accessors）\u58f0\u660e\u3002<\/p>\n

      get：\u8868\u793a\u83b7\u53d6\u5c5e\u6027\u503c\u7684\u8bbf\u95ee\u5668\u3002<\/span>\u5f53\u4f60\u8bfb\u53d6X\u7684\u503c\u65f6（\u4f8b\u5982 var value = obj.X;），\u5c31\u4f1a\u8c03\u7528\u8fd9\u4e2aget\u8bbf\u95ee\u5668\u3002
      \nset：\u8868\u793a\u8bbe\u7f6e\u5c5e\u6027\u503c\u7684\u8bbf\u95ee\u5668\u3002<\/span>\u5f53\u4f60\u7ed9X\u8d4b\u503c\u65f6（\u4f8b\u5982 obj.X = 3.14;），\u5c31\u4f1a\u8c03\u7528\u8fd9\u4e2aset\u8bbf\u95ee\u5668\u3002<\/p>\n

      \u81ea\u52a8\u5b9e\u73b0\u200b\u200b：\u8fd9\u79cd\u53ea\u6709get;\u548cset;\u800c\u6ca1\u6709\u663e\u5f0f\u5b9e\u73b0\u7684\u65b9\u5f0f，\u662fC#\u7684\u81ea\u52a8\u5b9e\u73b0\u5c5e\u6027\u3002
      \n\u7f16\u8bd1\u5668\u4f1a\u81ea\u52a8\u751f\u6210\u4e00\u4e2a\u9690\u85cf\u7684\u3001\u6211\u4eec\u770b\u4e0d\u5230\u7684\u79c1\u6709\u5b57\u6bb5，\u7528\u6765\u5b58\u50a8\u5c5e\u6027\u7684\u5b9e\u9645\u503c\u3002<\/p>\n

      \u53ea\u8bfb\u81ea\u52a8\u5c5e\u6027\u200b\u200b：\u5982\u679c\u53ea\u6709get\u8bbf\u95ee\u5668，\u6ca1\u6709set\u8bbf\u95ee\u5668，\u90a3\u4e48\u8fd9\u4e2a\u5c5e\u6027\u5c31\u662f\u53ea\u8bfb\u7684：<\/p>\n

      public double X { get; } \/\/ \u53ea\u8bfb\u5c5e\u6027<\/p>\n

      2.\u00a0\u7ed3\u6784\u521d\u59cb\u5316\u548c\u9ed8\u8ba4\u503c<\/span><\/h2>\n

      2.1\u00a0\u9ed8\u8ba4\u521d\u59cb\u5316（\u96f6\u503c）<\/span><\/h3>\n
        \n
      • \n

        \u6240\u6709\u5b57\u6bb5\/\u5c5e\u6027\u88ab\u521d\u59cb\u5316\u4e3a\u96f6\u503c（\u6570\u503c\u7c7b\u578b\u4e3a 0）<\/p>\n<\/li>\n

      • \n

        \u200b\u200b\u4e0d\u8c03\u7528\u200b\u200b\u4efb\u4f55\u6784\u9020\u51fd\u6570<\/p>\n<\/li>\n<\/ul>\n

        Coords point1 = default;
        \nConsole.WriteLine($"{point1.X}, {point1.Y}"); \/\/ 0, 0<\/p>\n

        2.2 \u6570\u7ec4\u521d\u59cb\u5316<\/span><\/h3>\n
          \n
        • \n

          \u6570\u7ec4\u5143\u7d20\u81ea\u52a8\u521d\u59cb\u5316\u4e3a\u96f6\u503c<\/p>\n<\/li>\n

        • \n

          \u4e0d\u8c03\u7528\u4efb\u4f55\u6784\u9020\u51fd\u6570<\/p>\n<\/li>\n<\/ul>\n

          var points = new Coords[3];
          \nConsole.WriteLine($"{points[0].X}, {points[0].Y}"); \/\/ 0, 0<\/p>\n

          \u8865\u5145：\u5f53\u4f60\u521b\u5efa\u6570\u7ec4：var points = new Coords[3];<\/p>\n

          C# \u4f1a\u200b\u200b\u81ea\u52a8\u521d\u59cb\u5316\u6bcf\u4e2a\u6570\u7ec4\u5143\u7d20\u200b\u200b\u4e3a\u7c7b\u578b\u7684\u9ed8\u8ba4\u503c（\u96f6\u503c），\u5bf9\u4e8e\u00a0Coords\u7ed3\u6784：<\/p>\n

          \/\/ \u76f8\u5f53\u4e8e\u6bcf\u4e2a\u5143\u7d20\u90fd\u6267\u884c\u4e86：
          \npoints[0] = default(Coords); \/\/ X=0, Y=0
          \npoints[1] = default(Coords); \/\/ X=0, Y=0
          \npoints[2] = default(Coords); \/\/ X=0, Y=0<\/p>\n

          2.3\u00a0<\/span>\u4f7f\u7528new\u4f46\u4e0d\u4f20\u53c2\u6570（\u9519\u8bef）<\/span><\/h3>\n
            \n
          • \n

            \u56e0\u4e3a\u6ca1\u6709\u65e0\u53c2\u6570\u6784\u9020\u51fd\u6570<\/p>\n<\/li>\n

          • \n

            \u5982\u679c\u6dfb\u52a0\u65e0\u53c2\u6570\u6784\u9020\u51fd\u6570（C#10+），\u884c\u4e3a\u4f1a\u6539\u53d8<\/p>\n<\/li>\n<\/ul>\n

            \/\/ \u7f16\u8bd1\u9519\u8bef：\u6ca1\u6709\u65e0\u53c2\u6570\u6784\u9020\u51fd\u6570
            \nCoords point2 = new Coords();<\/p>\n

            2.4 \u4f7f\u7528\u81ea\u5b9a\u4e49\u6784\u9020\u51fd\u6570<\/span><\/h3>\n
              \n
            • \n

              \u6b63\u5e38\u8c03\u7528\u81ea\u5b9a\u4e49\u6784\u9020\u51fd\u6570<\/p>\n<\/li>\n<\/ul>\n

              Coords point3 = new Coords(5, 10);
              \nConsole.WriteLine($"{point3.X}, {point3.Y}"); \/\/ 5, 10<\/p>\n

              2.5 \u624b\u52a8\u521d\u59cb\u5316（\u4e0d\u4f7f\u7528new）<\/span><\/h3>\n
                \n
              • \n

                \u5fc5\u987b\u5728\u4f7f\u7528\u524d\u521d\u59cb\u5316\u6240\u6709\u5b57\u6bb5<\/p>\n<\/li>\n

              • \n

                \u4e0d\u8c03\u7528\u4efb\u4f55\u6784\u9020\u51fd\u6570<\/p>\n<\/li>\n<\/ul>\n

                Coords point4;
                \npoint4.X = 15;
                \npoint4.Y = 20;
                \nConsole.WriteLine($"{point4.X}, {point4.Y}"); \/\/ 15, 20<\/p>\n

                \u8865\u5145：\u90e8\u5206\u521d\u59cb\u5316\u95ee\u9898（\u7f16\u8bd1\u9519\u8bef）<\/p>\n

                Coords point5;
                \npoint5.X = 3; \/\/ \u53ea\u521d\u59cb\u5316\u4e00\u4e2a
                \nConsole.WriteLine(point5.Y); \/\/ \u9519\u8bef: \u4f7f\u7528\u4e86\u672a\u8d4b\u503c\u7684\u53d8\u91cf<\/p>\n

                \u603b\u7ed3：<\/span><\/p>\n\n\n\n

                \u200b\u200b\u521d\u59cb\u5316\u65b9\u5f0f\u200b\u200b<\/p>\n

                \u200b\u200b\u662f\u5426\u8c03\u7528\u6784\u9020\u51fd\u6570\u200b\u200b<\/p>\n

                \u200b\u200b\u5b57\u6bb5\u503c\u200b\u200b<\/p>\n

                \u200b\u200b\u662f\u5426\u5b89\u5168\u200b\u200b<\/p>\n<\/tr>\n

                \n\n\n\n\n
                \n

                default(Coords)<\/p>\n<\/td>\n

                		\n

                \u5426<\/p>\n<\/td>\n

                		\n

                X=0, Y=0<\/p>\n<\/td>\n

                		\n

                \u5b89\u5168<\/p>\n<\/td>\n<\/tr>\n

                \n

                \u6570\u7ec4\u5143\u7d20<\/p>\n<\/td>\n

                		\n

                \u5426<\/p>\n<\/td>\n

                		\n

                X=0, Y=0<\/p>\n<\/td>\n

                		\n

                \u5b89\u5168<\/p>\n<\/td>\n<\/tr>\n

                \n

                new Coords(1,2)<\/p>\n<\/td>\n

                		\n

                \u662f<\/p>\n<\/td>\n

                		\n

                \u6839\u636e\u6784\u9020\u51fd\u6570\u8d4b\u503c<\/p>\n<\/td>\n

                		\n

                \u5b89\u5168<\/p>\n<\/td>\n<\/tr>\n

                \n

                \u624b\u52a8\u521d\u59cb\u5316<\/p>\n<\/td>\n

                		\n

                \u5426<\/p>\n<\/td>\n

                		\n

                \u624b\u52a8\u8d4b\u503c<\/p>\n<\/td>\n

                		\n

                \u200b\u200b\u9700\u5b8c\u5168\u521d\u59cb\u5316\u200b\u200b<\/p>\n<\/td>\n<\/tr>\n

                \n

                new Coords()<\/p>\n<\/td>\n

                		\n

                \u9519\u8bef（\u65e0\u6b64\u6784\u9020\u51fd\u6570）<\/p>\n<\/td>\n

                		\n

                –<\/p>\n<\/td>\n

                		\n

                \u7f16\u8bd1\u9519\u8bef<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                3.\u201c\u503c\u8bed\u4e49\u201d<\/span><\/h2>\n

                3.1 \u200b\u200b\u8d4b\u503c\u5c31\u662f\u590d\u5236<\/span><\/h3>\n

                \u5f53\u4f60\u5c06\u4e00\u4e2a\u00a0struct\u53d8\u91cf (A) \u8d4b\u503c\u7ed9\u53e6\u4e00\u4e2a\u00a0struct\u53d8\u91cf (B) \u65f6，\u4f1a\u53d1\u751f\u4ec0\u4e48？<\/p>\n

                A\u53d8\u91cf\u91cc\u5b58\u50a8\u7684\u200b\u200b\u6574\u4e2a\u6570\u636e\u5185\u5bb9\u4f1a\u88ab\u5b8c\u6574\u5730\u3001\u9010\u5b57\u8282\u5730\u590d\u5236\u4e00\u4efd\u200b\u200b\u653e\u5230 B\u53d8\u91cf\u91cc\u3002\u4fee\u6539 B\u200b\u4e0d\u4f1a\u200b\u200b\u5f71\u54cd\u539f\u6765\u7684\u00a0A\u3002\u6211\u4eec\u7ee7\u7eed\u4f7f\u7528\u4e0a\u8ff0\u7684Coords\u7ed3\u6784\u4e3e\u4f8b：<\/p>\n

                Coords point1 = new Coords(10, 20);
                \nCoords point2 = point1; \/\/ \u5c06 point1 \u7684\u6570\u636e (10,20) \u6574\u4e2a\u590d\u5236\u4e00\u4efd\u7ed9 point2<\/p>\n

                point2.X = 30; \/\/ \u4fee\u6539 point2 \u7684 X
                \nConsole.WriteLine(point1.X + "," + point1.Y); \/\/ \u8f93\u51fa: (10, 20) -> point1 \u6ca1\u53d8！
                \nConsole.WriteLine(point2.X + "," + point2.Y); \/\/ \u8f93\u51fa: (30, 20) -> \u53ea\u6709 point2 \u53d8\u4e86<\/p>\n

                \"\"<\/p>\n

                3.2 \u4f20\u53c2\u65f6\u4e5f\u662f\u590d\u5236\u200b\u200b<\/span><\/h3>\n

                \u5f53\u4f60\u5c06\u4e00\u4e2a struct\u53d8\u91cf\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9\u4e00\u4e2a\u65b9\u6cd5\u65f6，\u4f20\u9012\u7684\u4e5f\u662f\u5b83\u7684\u200b\u200b\u6570\u636e\u526f\u672c\u200b\u200b\u3002\u65b9\u6cd5\u5185\u90e8\u5bf9\u8fd9\u4e2a\u53c2\u6570\u7684\u4fee\u6539，\u901a\u5e38\u200b\u200b\u4e0d\u4f1a\u200b\u200b\u5f71\u54cd\u65b9\u6cd5\u5916\u9762\u539f\u6765\u7684\u90a3\u4e2a\u53d8\u91cf（\u9664\u975e\u7528\u4e86 ref\u6216 out）\u3002<\/p>\n

                void ModifyCoord(Coords coord)
                \n{
                \n coord.X = 100; \/\/ \u4fee\u6539\u7684\u662f\u4f20\u5165\u7684\u90a3\u4e2a\u526f\u672c
                \n}<\/p>\n

                Coords myPoint = new Coords(5, 5);
                \nModifyCoord(myPoint);
                \nConsole.WriteLine(myPoint); \/\/ \u8f93\u51fa: (5, 5) -> myPoint \u6ca1\u53d8！<\/p>\n

                3.3\u00a0\u200b\u200b\u8fd4\u56de\u65f6\u4e5f\u662f\u590d\u5236\u200b\u200b<\/span><\/h3>\n

                \u5f53\u4e00\u4e2a\u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a struct\u65f6，\u8fd4\u56de\u7684\u4e5f\u662f\u5b83\u7684\u4e00\u4e2a\u200b\u200b\u526f\u672c\u200b\u200b\u3002（\u4e86\u89e3\u5373\u53ef）<\/p>\n

                4. readonly<\/span><\/h2>\n

                \u53ef\u4ee5\u4f7f\u7528\u00a0readonly\u00a0\u4fee\u9970\u7b26\u6765\u58f0\u660e\u7ed3\u6784\u7c7b\u578b\u4e3a\u4e0d\u53ef\u53d8\u3002\u00a0readonly\u00a0\u7ed3\u6784\u7684\u6240\u6709\u6570\u636e\u6210\u5458\u90fd\u5fc5\u987b\u662f\u53ea\u8bfb\u7684，\u5982\u4e0b\u6240\u793a：<\/p>\n

                \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4efb\u4f55\u5b57\u6bb5\u58f0\u660e\u90fd\u5fc5\u987b\u5177\u6709\u00a0readonly\u00a0\u4fee\u9970\u7b26\u3002
                \n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4efb\u4f55\u5c5e\u6027（\u5305\u62ec\u81ea\u52a8\u5b9e\u73b0\u7684\u5c5e\u6027）\u90fd\u5fc5\u987b\u662f\u53ea\u8bfb\u7684，\u6216\u8005\u662f\u00a0init\u00a0\u53ea\u8bfb\u7684\u3002<\/p>\n

                \u7528\u00a0readonly\u4fee\u9970\u7684\u7ed3\u6784\u4f53，\u200b\u200b\u4ece\u8bbe\u8ba1\u4e0a\u4fdd\u8bc1\u5b83\u521b\u5efa\u540e\u5185\u5bb9\u7edd\u5bf9\u4e0d\u53ef\u53d8\u200b\u200b\u3002\u7c7b\u4f3c\u4f60\u7ed9\u7ed3\u6784\u4f53\u5957\u4e86\u4e2a"\u91d1\u949f\u7f69"\u3002<\/p>\n

                public readonly struct Coords \/\/ \u2190 \u5173\u952e\u58f0\u660e
                \n{
                \n public Coords(double x, double y)
                \n {
                \n X = x;
                \n Y = y;
                \n }<\/p>\n

                \/\/public double X { get; set; } \/\/ \u7f16\u8bd1\u9519\u8bef！\u4e0d\u80fd\u6709\u53ef\u5199\u5c5e\u6027（set）<\/p>\n

                public double X { get; } \/\/ \u53ea\u8bfb\u5c5e\u6027（\u65e0set）
                \n public double Y { get; init; } \/\/ init-only\u5c5e\u6027（\u4ec5\u6784\u9020\u65f6\u53ef\u8d4b\u503c）<\/p>\n

                public override string ToString() => $"({X}, {Y})";
                \n}<\/p>\n

                5.\u975e\u7834\u574f\u6027\u53d8\u5316（with\u8868\u8fbe\u5f0f）<\/span><\/h2>\n
                  \n
                • \u200b\u200b\u975e\u7834\u574f\u6027\u200b\u200b：\u539f\u59cb\u5bf9\u8c61\u4e0d\u4f1a\u88ab\u4fee\u6539\u200b\u200b<\/li>\n
                • \u200b\u200b\u8bed\u6cd5\u200b\u200b：\u6e90\u5bf9\u8c61 with { \u8981\u4fee\u6539\u7684\u5c5e\u6027 = \u65b0\u503c }<\/li>\n
                • \u200b\u200b\u8981\u6c42\u200b\u200b：\n
                    \n
                  • \u7ed3\u6784\u4f53\u5fc5\u987b\u662f readonly<\/li>\n
                  • \u5c5e\u6027\u5fc5\u987b\u6709 init\u8bbf\u95ee\u5668<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

                    \/\/ \u4f7f\u7528
                    \nvar p1 = new Coords(0, 0);
                    \nvar p2 = p1 with { X = 30 }; \/\/ \u521b\u5efa p1 \u7684\u526f\u672c，\u53ea\u4fee\u6539 X<\/p>\n

                    public readonly struct Coords \/\/ \u5fc5\u987b\u662f\u53ea\u8bfb\u7ed3\u6784
                    \n{
                    \n public double X { get; init; } \/\/ init \u5141\u8bb8\u521d\u59cb\u5316\u540e\u5b89\u5168\u4fee\u6539\u526f\u672c
                    \n public double Y { get; init; }
                    \n}<\/p>\n

                    6.\u8bb0\u5f55\u7ed3\u6784（record struct）<\/span><\/h2>\n

                    \u8fd9\u662f\u00a0with\u8868\u8fbe\u5f0f\u7684\u589e\u5f3a\u7248：<\/p>\n

                      \n
                    • \u200b\u200b\u8d85\u7ea7\u7b80\u6d01\u200b\u200b：\u4e00\u884c\u4ee3\u7801\u5b9a\u4e49\u6574\u4e2a\u7ed3\u6784\u4f53<\/li>\n
                    • \u200b\u200b\u81ea\u52a8\u529f\u80fd\u200b\u200b：\n
                        \n
                      • \u81ea\u52a8\u751f\u6210 ToString()\u65b9\u6cd5<\/li>\n
                      • \u81ea\u52a8\u751f\u6210\u503c\u6bd4\u8f83（Equals）<\/li>\n
                      • \u81ea\u52a8\u652f\u6301 with\u8868\u8fbe\u5f0f<\/li>\n<\/ul>\n<\/li>\n
                      • \u200b\u200b\u4e24\u79cd\u7c7b\u578b\u200b\u200b：\n
                          \n
                        • record struct：\u53ef\u53d8\u8bb0\u5f55<\/li>\n
                        • readonly record struct：\u4e0d\u53ef\u53d8\u8bb0\u5f55<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

                          \/\/\u81ea\u52a8\u751f\u6210 ToString()\u65b9\u6cd5
                          \nvar point = new Coords(3, 4);
                          \nConsole.WriteLine(point); \/\/ \u8f93\u51fa：Coords { X = 3, Y = 4 }<\/p>\n

                          \/\/\u81ea\u52a8\u751f\u6210\u200b\u200b\u503c\u6bd4\u8f83\u200b\u200b\u903b\u8f91
                          \nvar p1 = new Coords(1, 2);
                          \nvar p2 = new Coords(1, 2);
                          \nvar p3 = new Coords(3, 4);<\/p>\n

                          Console.WriteLine(p1 == p2); \/\/ \u8f93\u51fa：True（\u503c\u76f8\u540c）
                          \nConsole.WriteLine(p1.Equals(p3)); \/\/ \u8f93\u51fa：False（\u503c\u4e0d\u540c）<\/p>\n

                          \/\/ \u81ea\u52a8\u652f\u6301 with\u8868\u8fbe\u5f0f
                          \nvar p1 = new Coords(10, 20);
                          \nvar p2 = p1 with { X = 30 };<\/p>\n

                          public record struct Coords(double X, double Y); \/\/ \u4e00\u884c\u5b9a\u4e49！<\/p>\n

                          \u5b66\u5230\u4e86\u8fd9\u91cc，\u54b1\u4fe9\u771f\u68d2，\u8bb0\u5f97\u6309\u65f6\u5403\u996d（\u5e0c\u671b\u4f60\u4eca\u5929\u662f\u5f00\u5fc3\u7684~）<\/p>\n

                          \u3010\u672c\u7bc7\u7ed3\u675f，\u65b0\u7684\u77e5\u8bc6\u4f1a\u4e0d\u5b9a\u65f6\u8865\u5145\u3011<\/p>\n

                          \u611f\u8c22\u4f60\u7684\u9605\u8bfb！\u5982\u679c\u5185\u5bb9\u6709\u5e2e\u52a9，\u6b22\u8fce \u200b\u200b\u70b9\u8d5e\u2764\ufe0f + \u6536\u85cf\u2b50 + \u5173\u6ce8\u200b\u200b \u652f\u6301！ 😊<\/p>\n","protected":false},"excerpt":{"rendered":"

                          \u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb498\u6b21\uff0c\u70b9\u8d5e14\u6b21\uff0c\u6536\u85cf7\u6b21\u3002\u672c\u6587\u4ecb\u7ecd\u4e86C#\u4e2d\u7ed3\u6784\u7c7b\u578b(struct)\u7684\u6838\u5fc3\u6982\u5ff5\u548c\u4f7f\u7528\u65b9\u5f0f\u3002\u4e3b\u8981\u5185\u5bb9\u5305\u62ec\uff1a1) \u7ed3\u6784\u4f53\u662f\u503c\u7c7b\u578b\uff1b2) \u8bbf\u95ee\u4fee\u9970\u7b26\uff1b3) \u81ea\u52a8\u5b9e\u73b0\u5c5e\u6027\uff1b4) \u591a\u79cd\u521d\u59cb\u5316\u65b9\u5f0f\uff1b5) \u503c\u8bed\u4e49\u7279\u6027\uff1b6) readonly\u7ed3\u6784\u4f53\u7684\u4e0d\u53ef\u53d8\u7279\u6027\uff1b7) with\u8868\u8fbe\u5f0f\u5b9e\u73b0\u975e\u7834\u574f\u6027\u4fee\u6539\uff1b8) record struct\u7684\u7b80\u5316\u8bed\u6cd5\u548c\u81ea\u52a8\u529f\u80fd\u3002\u6587\u7ae0\u901a\u8fc7\u5750\u6807\u7ed3\u6784\u793a\u4f8b\u8be6\u7ec6\u8bb2\u89e3\u4e86\u5404\u7279\u6027\u7684\u4f7f\u7528\u573a\u666f\u548c\u6ce8\u610f\u4e8b\u9879\u3002<\/p>\n","protected":false},"author":2,"featured_media":53011,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[55,371],"topic":[],"class_list":["post-53012","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-c","tag-371"],"yoast_head":"\nC#\u77e5\u8bc6\u5b66\u4e60-008\uff08\u200b\u200b\u7ed3\u6784\u7c7b\u578b\uff09 - 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