{"id":5192,"date":"2023-01-05T12:10:24","date_gmt":"2023-01-05T04:10:24","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5192"},"modified":"2023-01-05T12:10:24","modified_gmt":"2023-01-05T04:10:24","slug":"%e4%ba%86%e8%a7%a3typescript%e6%b3%9b%e5%9e%8bgenerics%e7%9a%84%e5%9f%ba%e6%9c%ac%e7%94%a8%e6%b3%95","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/typescript\/%e4%ba%86%e8%a7%a3typescript%e6%b3%9b%e5%9e%8bgenerics%e7%9a%84%e5%9f%ba%e6%9c%ac%e7%94%a8%e6%b3%95\/","title":{"rendered":"\u4e86\u89e3TypeScript\u6cdb\u578b(Generics)\u7684\u57fa\u672c\u7528\u6cd5"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"TypeScript, \u6cdb\u578b, generics, \u7528\u6cd5\"><\/p>\n<h1>TypeScript \u6cdb\u578b(generics)\u7684\u57fa\u672c\u7528\u6cd5<\/h1>\n<p>TypeScript \u6cdb\u578b(generics)\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u8b93\u4f60\u5728\u7de8\u5beb\u7a0b\u5f0f\u78bc\u6642\u66f4\u52a0\u6709\u6548\u7387\u3002\u5b83\u53ef\u4ee5\u8b93\u4f60\u5728\u4e0d\u6539\u8b8a\u7a0b\u5f0f\u78bc\u7684\u60c5\u6cc1\u4e0b\uff0c\u5c0d\u7a0b\u5f0f\u78bc\u9032\u884c\u91cd\u8907\u4f7f\u7528\uff0c\u4e26\u4e14\u53ef\u4ee5\u66f4\u6709\u6548\u7387\u7684\u64b0\u5beb\u7a0b\u5f0f\u78bc\u3002<\/p>\n<p>TypeScript \u6cdb\u578b(generics)\u7684\u57fa\u672c\u7528\u6cd5\u662f\uff0c\u5b83\u53ef\u4ee5\u8b93\u4f60\u5728\u7de8\u5beb\u7a0b\u5f0f\u78bc\u6642\uff0c\u5c07\u4e00\u500b\u51fd\u5f0f\u6216\u985e\u5225\u5b9a\u7fa9\u70ba\u4e00\u500b\u53ef\u4ee5\u63a5\u53d7\u591a\u7a2e\u985e\u578b\u7684\u53c3\u6578\uff0c\u800c\u4e0d\u9700\u8981\u91cd\u65b0\u5b9a\u7fa9\u51fd\u5f0f\u6216\u985e\u5225\u3002<\/p>\n<p>\u8209\u500b\u4f8b\u5b50\uff0c\u5047\u8a2d\u4f60\u60f3\u8981\u5b9a\u7fa9\u4e00\u500b\u51fd\u5f0f\uff0c\u53ef\u4ee5\u63a5\u53d7\u4efb\u4f55\u985e\u578b\u7684\u53c3\u6578\uff0c\u4e26\u4e14\u53ef\u4ee5\u5c07\u53c3\u6578\u7684\u503c\u52a0\u4e00\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528 TypeScript \u6cdb\u578b(generics)\u4f86\u5b9a\u7fa9\u9019\u500b\u51fd\u5f0f\uff1a<\/p>\n<pre class=\"brush: typescript\">\nfunction addOne<T>(value: T): T {\n  return value + 1;\n}\n<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u7a0b\u5f0f\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528\u4e86 <code>&lt;T&gt;<\/code> \u4f86\u5b9a\u7fa9\u4e00\u500b\u6cdb\u578b\uff0c\u4e26\u4e14\u5c07\u51fd\u5f0f\u7684\u53c3\u6578\u5b9a\u7fa9\u70ba <code>T<\/code> \u985e\u578b\uff0c\u9019\u6a23\u51fd\u5f0f\u5c31\u53ef\u4ee5\u63a5\u53d7\u4efb\u4f55\u985e\u578b\u7684\u53c3\u6578\uff0c\u4e26\u4e14\u53ef\u4ee5\u5c07\u53c3\u6578\u7684\u503c\u52a0\u4e00\u3002<\/p>\n<p>\u6211\u5011\u4e5f\u53ef\u4ee5\u4f7f\u7528 TypeScript \u6cdb\u578b(generics)\u4f86\u5b9a\u7fa9\u4e00\u500b\u985e\u5225\uff0c\u8b93\u985e\u5225\u53ef\u4ee5\u63a5\u53d7\u4efb\u4f55\u985e\u578b\u7684\u53c3\u6578\uff1a<\/p>\n<pre class=\"brush: typescript\">\nclass MyClass<T> {\n  value: T;\n\n  constructor(value: T) {\n    this.value = value;\n  }\n}\n<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u7a0b\u5f0f\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528\u4e86 <code>&lt;T&gt;<\/code> \u4f86\u5b9a\u7fa9\u4e00\u500b\u6cdb\u578b\uff0c\u4e26\u4e14\u5c07\u985e\u5225\u7684\u53c3\u6578\u5b9a\u7fa9\u70ba <code>T<\/code> \u985e\u578b\uff0c\u9019\u6a23\u985e\u5225\u5c31\u53ef\u4ee5\u63a5\u53d7\u4efb\u4f55\u985e\u578b\u7684\u53c3\u6578\u3002<\/p>\n<p>TypeScript \u6cdb\u578b(generics)\u7684\u57fa\u672c\u7528\u6cd5\u53ef\u4ee5\u8b93\u4f60\u5728\u7de8\u5beb\u7a0b\u5f0f\u78bc\u6642\u66f4\u52a0\u6709\u6548\u7387\uff0c\u53ef\u4ee5\u8b93\u4f60\u5728\u4e0d\u6539\u8b8a\u7a0b\u5f0f\u78bc\u7684\u60c5\u6cc1\u4e0b\uff0c\u5c0d\u7a0b\u5f0f\u78bc\u9032\u884c\u91cd\u8907\u4f7f\u7528\uff0c\u4e26\u4e14\u53ef\u4ee5\u66f4\u6709\u6548\u7387\u7684\u64b0\u5beb\u7a0b\u5f0f\u78bc\u3002<\/p>\n<p><!--more--><\/p>\n<h2>TypeScript \u6cdb\u578b(generics)\u7684\u61c9\u7528<\/h2>\n<p>TypeScript \u6cdb\u578b(generics)\u7684\u61c9\u7528\u4e0d\u50c5\u50c5\u53ef\u4ee5\u7528\u65bc\u5b9a\u7fa9\u51fd\u5f0f\u6216\u985e\u5225\uff0c\u9084\u53ef\u4ee5\u7528\u65bc\u5b9a\u7fa9\u9663\u5217\u3001\u7269\u4ef6\u3001\u4ecb\u9762\u7b49\u7b49\u3002<\/p>\n<p>\u8209\u500b\u4f8b\u5b50\uff0c\u5047\u8a2d\u4f60\u60f3\u8981\u5b9a\u7fa9\u4e00\u500b\u9663\u5217\uff0c\u53ef\u4ee5\u63a5\u53d7\u4efb\u4f55\u985e\u578b\u7684\u53c3\u6578\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528 TypeScript \u6cdb\u578b(generics)\u4f86\u5b9a\u7fa9\u9019\u500b\u9663\u5217\uff1a<\/p>\n<pre class=\"brush: typescript\">\nlet myArray: Array<T> = [];\n<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u7a0b\u5f0f\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528\u4e86 <code>&lt;T&gt;<\/code> \u4f86\u5b9a\u7fa9\u4e00\u500b\u6cdb\u578b\uff0c\u4e26\u4e14\u5c07\u9663\u5217\u7684\u53c3\u6578\u5b9a\u7fa9\u70ba <code>T<\/code> \u985e\u578b\uff0c\u9019\u6a23\u9663\u5217\u5c31\u53ef\u4ee5\u63a5\u53d7\u4efb\u4f55\u985e\u578b\u7684\u53c3\u6578\u3002<\/p>\n<p>TypeScript \u6cdb\u578b(generics)\u7684\u61c9\u7528\u53ef\u4ee5\u8b93\u4f60\u5728\u7de8\u5beb\u7a0b\u5f0f\u78bc\u6642\u66f4\u52a0\u6709\u6548\u7387\uff0c\u53ef\u4ee5\u8b93\u4f60\u5728\u4e0d\u6539\u8b8a\u7a0b\u5f0f\u78bc\u7684\u60c5\u6cc1\u4e0b\uff0c\u5c0d\u7a0b\u5f0f\u78bc\u9032\u884c\u91cd\u8907\u4f7f\u7528\uff0c\u4e26\u4e14\u53ef\u4ee5\u66f4\u6709\u6548\u7387\u7684\u64b0\u5beb\u7a0b\u5f0f\u78bc\u3002<\/p>\n<h2>\u7e3d\u7d50<\/h2>\n<p>TypeScript \u6cdb\u578b(generics)\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u8b93\u4f60\u5728\u7de8\u5beb\u7a0b\u5f0f\u78bc\u6642\u66f4\u52a0\u6709\u6548\u7387\u3002\u5b83\u53ef\u4ee5\u8b93\u4f60\u5728\u4e0d\u6539\u8b8a\u7a0b\u5f0f\u78bc\u7684\u60c5\u6cc1\u4e0b\uff0c\u5c0d\u7a0b\u5f0f\u78bc\u9032\u884c\u91cd\u8907\u4f7f\u7528\uff0c\u4e26\u4e14\u53ef\u4ee5\u66f4\u6709\u6548\u7387\u7684\u64b0\u5beb\u7a0b\u5f0f\u78bc\u3002TypeScript \u6cdb\u578b(generics)\u7684\u57fa\u672c\u7528\u6cd5\u53ef\u4ee5\u8b93\u4f60\u5728\u5b9a\u7fa9\u51fd\u5f0f\u6216\u985e\u5225\u6642\uff0c\u63a5\u53d7\u4efb\u4f55\u985e\u578b\u7684\u53c3\u6578\uff0c\u800c\u4e0d\u9700\u8981\u91cd\u65b0\u5b9a\u7fa9\u51fd\u5f0f\u6216\u985e\u5225\u3002TypeScript \u6cdb\u578b(generics)\u7684\u61c9\u7528\u53ef\u4ee5\u8b93\u4f60\u5728\u5b9a\u7fa9\u9663\u5217\u3001\u7269\u4ef6\u3001\u4ecb\u9762\u7b49\u7b49\u6642\uff0c\u63a5\u53d7\u4efb\u4f55\u985e\u578b\u7684\u53c3\u6578\uff0c\u800c\u4e0d\u9700\u8981\u91cd\u65b0\u5b9a\u7fa9\u9663\u5217\u3001\u7269\u4ef6\u3001\u4ecb\u9762\u7b49\u7b49\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6458\u8981(Description):TypeScript\u6cdb\u578b(Generics)\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u6709\u6548\u5730\u69cb\u5efa\u53ef\u91cd\u7528\u7684\u4ee3\u78bc\uff0c\u4e26\u6e1b\u5c11\u91cd\u8907\u7684\u5de5\u4f5c\u3002\u672c\u6587\u5c07\u4ecb\u7d39TypeScript\u6cdb\u578b\u7684\u57fa\u672c\u7528\u6cd5\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528\u5b83\u4f86\u69cb\u5efa\u53ef\u91cd\u7528\u7684\u4ee3\u78bc\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[187],"tags":[186],"class_list":["post-5192","post","type-post","status-publish","format-standard","hentry","category-typescript","tag-typescript"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-1lK","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5192","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/comments?post=5192"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5192\/revisions"}],"predecessor-version":[{"id":5193,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5192\/revisions\/5193"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=5192"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=5192"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=5192"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}