{"id":2111,"date":"2021-09-23T01:11:13","date_gmt":"2021-09-22T17:11:13","guid":{"rendered":"https:\/\/www.develop-note.com\/blog\/?p=2111"},"modified":"2021-09-23T01:11:13","modified_gmt":"2021-09-22T17:11:13","slug":"object-class-interface","status":"publish","type":"post","link":"https:\/\/www.develop-note.com\/blog\/2021\/09\/23\/object-class-interface\/","title":{"rendered":"D-22 \u7269\u4ef6 object ? class ? interface"},"content":{"rendered":"

\u7269\u4ef6 object \u662f\u4ec0\u9ebc<\/h1>\n

\u6628\u5929\u4e00\u76f4\u6709\u63d0\u5230\u4e00\u500b\u95dc\u9375\u5b57\u7269\u4ef6\u4e0d\u904e\u4e00\u76f4\u6c92\u6709\u8aaa\u660e\u4ec0\u9ebc\u662f\u7269\u4ef6\uff0c\u56e0\u70ba\u5c31\u7b49\u8457\u9019\u4e00\u7bc7\u4e00\u8d77\u8aaa\u660e\uff0c\u73fe\u5728\u5c31\u8b93\u8b80\u8005\u5011\u8ddf\u5c0f\u5149\u4e00\u8d77\u4f86\u4e86\u89e3\u4ec0\u9ebc\u662f\u7269\u4ef6\u5427\u3002<\/p>\n

<\/p>\n

object ? class ? interface<\/h2>\n

\u300c\u524d\u8f29\uff0c\u6628\u5929\u807d\u597d\u591a\u7269\u4ef6\u8ddf\u985e\u5225\u7136\u5f8c\u9084\u6709\u4e4b\u524d\u8aaa\u7684\u4ecb\u9762\uff0c\u9019\u4e9b\u662f\u4ec0\u9ebc\u6771\u897f\u554a\u3002\u300d
\n\u4eca\u5929\u4e00\u65e9\u5c0f\u5149\u5c31\u628a\u6628\u5929\u8ddf\u4e4b\u524d\u807d\u5230\u7684\u7136\u5f8c\u9084\u4e0d\u4e86\u89e3\u7684\u6771\u897f\u5168\u90e8\u90fd\u5728\u554f\u4e00\u904d\uff0c\u7136\u5f8c\u5927\u982d\u4f9d\u820a\u57cb\u9996\u65bc\u6587\u4ef6\u4e4b\u4e2d\uff0c\u5927\u7d04\u904e\u4e86\u5341\u5206\u9418\u5927\u982d\u624d\u62ac\u8d77\u982d\u4f86\u770b\u4e86\u5c0f\u5149\u4e00\u773c\uff0c\u4e26\u4e14\u554f\u4e86\u4ed6\u4e00\u53e5\u8a71\u3002
\n\u300c\u7a76\u7adf\u5728\u8981\u600e\u9ebc\u505a\u958b\u767c\u624d\u6703\u5feb\uff0c\u4f60\u77e5\u9053\u55ce\uff1f\u300d
\n\u986f\u7136\u9019\u554f\u984c\u8003\u5012\u4e86\u5c0f\u5149\uff0c\u56e0\u70ba\u807d\u4e86\u9019\u500b\u554f\u984c\u8b93\u5c0f\u5149\u9032\u5165\u6c88\u601d\u7684\u72c0\u614b\u4e4b\u4e2d\u3002
\n\u300c\u6628\u5929\u6559\u7684\u65b9\u6cd5\u6709\u8b93\u4f60\u611f\u53d7\u5230\u958b\u767c\u8b8a\u5bb9\u6613\u4e86\u55ce\uff1f\u300d
\n\u300c\u597d\u50cf\u6bd4\u8f03\u4e0d\u7528\u5beb\u90a3\u591a\u7a0b\u5f0f\u78bc\u4e86\u300d
\n\u807d\u5230\u5927\u982d\u66f4\u9032\u4e00\u6b65\u7684\u554f\u984c\u5f8c\u5c0f\u5149\u5f88\u76f4\u89ba\u7684\u628a\u611f\u53d7\u5230\u6771\u897f\u8aaa\u51fa\u4f86\uff0c\u800c\u5927\u982d\u807d\u4e86\u4e4b\u5f8c\u5c31\u7e7c\u7e8c\u5f80\u4e0b\u8aaa\u4e0b\u53bb\u3002
\n\u300c\u662f\u5427\uff0c\u4f60\u9084\u8a18\u5f97ctrl<\/code>+v<\/code>\u8ddfloop<\/code>\u5427\uff0c\u5982\u679c\u4eca\u5929\u6703\u4f7f\u7528\u65b9\u6cd5\u8ddf\u985e\u5225\u6703\u8b93\u4f60\u7684\u958b\u767c\u66f4\u9806\u5229\uff0c\u6240\u4ee5\u6211\u5011\u66f4\u9032\u4e00\u6b65\u4e86\u89e3\u7269\u4ef6\u8ddf\u985e\u5225\u5427\u3002\u300d<\/p>\n

object<\/h2>\n

\u9996\u5148\u4f86\u8aaa\u660e\u4ec0\u9ebc\u662f\u7269\u4ef6\u5427\uff0c\u5728c#\u7684\u8b8a\u6578\u90fd\u662f\u7269\u4ef6\uff0c\u4f8b\u5982\u4e4b\u524d\u7684int<\/code>\u8ddfstring<\/code>\u4e5f\u90fd\u662f\u7269\u4ef6\uff0c\u5176\u4e2d\u7269\u4ef6\u53c8\u5206\u70ba\u5169\u985eValueType<\/a>\u8207ReferenceType<\/a>\u5169\u985e\u5176\u5dee\u7570\u5728\u65bc\u8655\u7406\u7269\u4ef6\u7684\u8a18\u61b6\u9ad4\u7684\u65b9\u5f0f\u4e0d\u540c\uff0c\u5176\u4e2dint<\/code>\u9019\u7a2e\u5c31\u662fValueType<\/a>\uff0c\u6240\u4ee5\u6211\u5011\u5148\u8aaa\u660e\u4e00\u4e0b\u9019\u90e8\u5206\u3002<\/p>\n

ValueType<\/h2>\n

\u9019\u500bValueType<\/a>\u7684\u8a18\u61b6\u9ad4\u662f\u653e\u7f6e\u65bcstack<\/code>\u5167\uff0c\u800c\u4e14\u6bcf\u6b21\u7570\u52d5\u90fd\u6703\u7522\u751f\u4e00\u7d44\u65b0\u8a18\u61b6\u9ad4\u914d\u7f6e\uff0c\u9084\u6709\u4f8b\u5982\u5728\u65b9\u6cd5\u53c3\u6578\u7684\u50b3\u5165\u6642\u4e5f\u662f\u8907\u88fd\u4e00\u4efd\u8cc7\u6599\u5230\u65b0\u7684\u8a18\u61b6\u9ad4\u914d\u7f6e\u5167\uff0c\u6240\u4ee5\u65b9\u6cd5\u5167\u7684\u7570\u52d5\u4e0d\u6703\u5f71\u97ff\u5230\u65b9\u6cd5\u5916\u7684\u8b8a\u6578\uff0c\u6240\u4ee5\u8981\u5c07\u539f\u4f86\u7684\u90a3\u8b8a\u6578\u50b3\u5165\u65b9\u6cd5\u5167\u5247\u9700\u8981ref<\/code>\u95dc\u9375\u5b57\uff0c\u8a73\u7d30\u5167\u5bb9\u5982\u4e0b\u3002<\/p>\n

using System;\n\npublic class Program\n{\n    private static void Add(int param)\n    {\n         param++;\n    }\n\n    private static void AddRef(ref int param)\n    {\n        param++;\n    }\n    public static void Main()\n    {\n        var param = 10;\n        Add(param);\n        Console.WriteLine(param);\n        AddRef(ref param);\n        Console.WriteLine(param);\n    }\n}\n\n<\/code><\/pre>\n
struct<\/h3>\n
\u9019\u500bValueType<\/a>\u9664\u4e86\u57fa\u790e\u578b\u5225\u5916\u9084\u53ef\u4ee5\u81ea\u5b9a\u7fa9\u578b\u5225\u7d50\u69cb\u985e\u578b<\/a>\uff0c\u9019\u6642\u5019\u5c31\u8981\u7528struct<\/code>\u9019\u500b\u95dc\u9375\u5b57\uff0c\u6240\u4ee5\u5be6\u969b\u7684\u5beb\u6cd5\u5982\u4e0b\u3002<\/p>\n

using System;\n\npublic class Program\n{\n    public static void Main()\n    {\n        var param = new Vector();\n        Console.WriteLine(param);\n        param.X++;\n        Console.WriteLine(param);\n    }\n\n    public struct Vector\n    {\n            public int X;\n            public int Y;\n\n            public override string ToString()\n        {\n                return string.Format(\"X:{0}, Y:{1}\", X, Y);\n            }\n    }\n}\n<\/code><\/pre>\n
ReferenceType<\/h2>\n
\u4ecb\u7d39\u5b8cValueType<\/a>\u5f8c\u6211\u5011\u8981\u4f86\u4ecb\u7d39ReferenceType<\/a>\uff0c\u5176\u8655\u7406\u8a18\u61b6\u9ad4\u7684\u65b9\u5f0f\u662f\u5c07\u8cc7\u6599\u653e\u5728heap<\/code>\u5167\uff0c\u800c\u8b8a\u6578\u5167\u90fd\u662f\u8a18\u8f09\u8a72\u8cc7\u6599\u7684\u8a18\u61b6\u9ad4\u4f4d\u7f6e\uff0c\u6240\u4ee5\u50b3\u5230\u65b9\u6cd5\u5167\u5982\u679c\u6539\u8b8a\u671f\u5c6c\u6027\u6216\u6b04\u4f4d\u5247\u65b9\u6cd5\u5916\u7684\u8b8a\u6578\u4e5f\u6703\u88ab\u5f71\u97ff\u5230\u3002\u800c\u4e14\u9084\u6709\u4e00\u500b\u7279\u6027\u5c31\u662f\u5176\u9810\u8a2d\u503c\u90fd\u662fnull<\/code>\uff0c\u5176\u4e2d\u6bd4\u8f03\u7279\u5225\u7684\u662f\u57fa\u790e\u578b\u5225\u4e2d\u53ea\u6709string<\/code>\u662fReferenceType<\/a>\u3002<\/p>\n
class<\/h3>\n
\u5176\u5be6\u8aaa\u5230ReferenceType<\/a>\u9084\u6709\u53e6\u5916\u4e00\u500b\u6bd4\u8f03\u91cd\u8981\u7684\u662f\u985e\u5225<\/a>\u4e86\uff0c\u81f3\u65bc\u8aaa\u5230\u985e\u5225<\/a>\u5c31\u4e0d\u80fd\u4e0d\u63d0\u7269\u4ef6\u5c0e\u5411\u8a2d\u8a08\u6a21\u5f0f<\/a>\uff0c\u56e0\u70ba\u53ef\u4ee5\u900f\u904e\u7e7c\u627f<\/code>\u8b93\u7a0b\u5f0f\u958b\u767c\u66f4\u4fbf\u5229\u3002<\/p>\n
interface<\/h3>\n
\u96d6\u7136\u4f7f\u7528\u985e\u5225<\/a>\u5df2\u53ca\u7e7c\u627f<\/code>\u53ef\u4ee5\u5e36\u4f86\u958b\u767c\u7684\u4fbf\u5229\u6027\uff0c\u4f46\u662f\u4e0d\u7576\u7684\u7e7c\u627f\u5df2\u6975\u76f4\u63a5\u76f8\u4f9d\u65bc\u67d0\u985e\u5225<\/a>\u6703\u9020\u6210\u7a0b\u5f0f\u65bc\u7a0b\u5f0f\u7684\u95dc\u806f\u592a\u6df1\uff0c\u82e5\u662f\u985e\u5225\u7684\u7570\u52d5\u6703\u76f4\u63a5\u5f71\u97ff\u53e6\u4e00\u500b\u985e\u5225\u7684\u958b\u767c\uff0c\u6240\u4ee5\u9019\u6642\u5c31\u8981\u8aaa\u660e\u4ecb\u9762<\/a>\u7684\u91cd\u8981\u6027\uff0c\u900f\u904ehas a<\/code>[\u4ecb\u9762\uff3d\u53ef\u4ee5\u8b93\u985e\u5225\u76f4\u63a5\u76f8\u4f9d\u65bc\u4ecb\u9762<\/a>\uff0c\u800c\u4ecb\u9762<\/a>\u53c8\u53ea\u662f\u5b9a\u7fa9\u65b9\u6cd5\u7684\u53c3\u6578\u4e0d\u6d89\u53ca\u5be6\u4f5c\u7684\u5167\u5bb9\uff0c\u6240\u4ee5\u642d\u914d\u8d77\u4f86\u82e5\u662f\u5be6\u4f5c\u6709\u8b8a\u52d5\u5176\u5be6\u4e0d\u5f71\u97ff\u64c1\u6709\u8a72\u4ecb\u9762<\/a>\u7684\u985e\u5225\u3002
\n\u8aaa\u4e86\u90a3\u9ebc\u591a\u4ee5\u4e0b\u4f86\u5c55\u793a\u4e00\u4e0b\u985e\u5225<\/a>has a<\/code>\u4ecb\u9762<\/a>\u7684\u8a2d\u8a08\u65b9\u5f0f\u3002<\/p>\n
public IOperator\n{\n    int Calc(int x, int y);\n}\n\npublic class Calculator\n{\n    private IOperator _operator = null;\n    public Calculator(IOperator operator)\n    {\n        _operator = operator;\n    }\n\n    public int Calc(int x, int y)\n    {\n        return _operator.Calc(x, y);\n    }\n}\n\npublic class PlusOperator : IOperator\n{\n    public int Calc(int x, int y)\n    {\n        return x + y;\n    }\n}\n\npublic class MultiOperator : IOperator\n{\n    public int Calc(int x, int y)\n    {\n        return x * y;\n    }\n}\n\npublic static void Main()\n{\n    \/\/ \u52a0\u6cd5\u8a08\u7b97\u6a5f\n    var calc = new Calculator(new PlusOperator()); \n\n    \/\/ result is 20\n    Console.WriteLine(calc.Calc(10, 10));  \n\n    \/\/ \u4e58\u6cd5\u8a08\u7b97\u6a5f\n    calc = new new Calculator(new MultiOperator()); \n\n    \/\/ result is 100\n    Console.WriteLine(calc.Calc(10, 10));  \n}\n<\/code><\/pre>\n
\u5f8c\u8a18<\/h2>\n
\u300c\u524d\u8f29\uff0c\u4f60\u4eca\u5929\u771f\u7684\u8aaa\u5230\u6211\u982d\u660f\u773c\u82b1\u4e86\u300d
\n\u5c0f\u5149\u63c9\u8457\u4ed6\u7684\u592a\u967d\u7a74\u4e00\u908a\u8ddf\u5927\u982d\u9019\u9ebc\u8aaa\uff0c\u800c\u5927\u982d\u807d\u5230\u5f8c\u54c8\u54c8\u5927\u7b11\uff0c\u4e26\u4e14\u9019\u9ebc\u5c0d\u4ed6\u8aaa\u3002
\n\u300c\u6211\u53ea\u662f\u8aaa\u500b\u5927\u6982\u800c\u5df2\uff0c\u95dc\u65bc\u4ecb\u9762\u9084\u6709\u5f88\u591a\u6c92\u8aaa\u7684\uff0c\u751a\u81f3\u65bc\u6709\u4e9b\u6211\u9084\u9700\u8981\u8acb\u5230\u6211\u7684\u524d\u8f29\u8ddf\u4f60\u4ecb\u7d39IOC<\/code>\u5462\uff0c\u4e0d\u904e\u9019\u662f\u5f8c\u9762\u7684\u4e8b\u4e86\uff0c\u4f60\u5148\u5438\u6536\u4e00\u4e0b\uff0c\u4e26\u4e14\u53bb\u4e86\u89e3OOP<\/code>\u4e5f\u5c31\u662f\u7269\u4ef6\u5c0e\u5411\u8a2d\u8a08\u6a21\u5f0f<\/a>\u7684\u5167\u5bb9\u5427\u3002\u300d
\n\u6240\u4ee5\u9019\u4e00\u7bc7\u7269\u4ef6\u5148\u5230\u6b64\u7d50\u675f\u4e86\uff0c\u656c\u8acb\u671f\u5f85\u4e0b\u4e00\u7bc7\u7684\u5167\u5bb9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u7269\u4ef6 object \u662f\u4ec0\u9ebc \u6628\u5929\u4e00\u76f4\u6709\u63d0\u5230\u4e00\u500b\u95dc\u9375\u5b57\u7269\u4ef6\u4e0d\u904e\u4e00\u76f4\u6c92\u6709\u8aaa\u660e\u4ec0\u9ebc\u662f\u7269\u4ef6\uff0c\u56e0\u70ba\u5c31\u7b49\u8457\u9019\u4e00\u7bc7\u4e00\u8d77\u8aaa\u660e\uff0c … <\/p>\n
\u95b1\u8b80\u5168\u6587\u3008D-22 \u7269\u4ef6 object ? class ? interface\u3009<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[2],"tags":[90,71,92],"class_list":["post-2111","post","type-post","status-publish","format-standard","hentry","category-develop","tag-2021ironman","tag-c","tag-dotnetcore"],"_links":{"self":[{"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/posts\/2111","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/comments?post=2111"}],"version-history":[{"count":35,"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/posts\/2111\/revisions"}],"predecessor-version":[{"id":2150,"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/posts\/2111\/revisions\/2150"}],"wp:attachment":[{"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/media?parent=2111"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/categories?post=2111"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/tags?post=2111"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}