{"id":5346,"date":"2025-06-01T13:56:37","date_gmt":"2025-06-04T06:14:37","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5346"},"modified":"2025-06-04T13:56:37","modified_gmt":"2025-06-04T06:14:37","slug":"%e5%ad%b8%e7%bf%92%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8typescript%e8%a8%88%e7%ae%97%e6%95%b8%e7%b5%84%e7%9a%84%e6%96%b9%e5%b7%ae-2","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/typescript\/%e5%ad%b8%e7%bf%92%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8typescript%e8%a8%88%e7%ae%97%e6%95%b8%e7%b5%84%e7%9a%84%e6%96%b9%e5%b7%ae-2\/","title":{"rendered":"\u5b78\u6703\u4f7f\u7528 TypeScript \u5feb\u901f\u8a08\u7b97\u6578\u7d44\u65b9\u5dee\uff1a\u5b8c\u6574\u6559\u5b78\u8207\u7bc4\u4f8b"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"TypeScript, \u6578\u7d44\u65b9\u5dee, JavaScript, \u7a0b\u5f0f\u8a2d\u8a08, \u6559\u5b78\"><\/p>\n<h1>\u5b78\u6703\u4f7f\u7528 TypeScript \u5feb\u901f\u8a08\u7b97\u6578\u7d44\u65b9\u5dee\uff1a\u5b8c\u6574\u6559\u5b78\u8207\u7bc4\u4f8b<\/h1>\n<p>\u5728\u7a0b\u5f0f\u958b\u767c\u4e2d\uff0c\u8a08\u7b97\u6578\u7d44\u7684\u65b9\u5dee\u662f\u4e00\u9805\u91cd\u8981\u7684\u6578\u64da\u5206\u6790\u4efb\u52d9\u3002\u65b9\u5dee\u4f5c\u70ba\u7d71\u8a08\u5b78\u4e2d\u7684\u4e00\u500b\u95dc\u9375\u6307\u6a19\uff0c\u80fd\u5920\u5e6b\u52a9\u6211\u5011\u4e86\u89e3\u6578\u64da\u7684\u5206\u6563\u7a0b\u5ea6\u3002\u5728\u9019\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u5011\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528 TypeScript \u4f86\u7c21\u55ae\u800c\u6709\u6548\u5730\u8a08\u7b97\u6578\u7d44\u7684\u65b9\u5dee\u3002<\/p>\n<h2>\u4ec0\u9ebc\u662f\u65b9\u5dee\uff1f<\/h2>\n<p>\u65b9\u5dee\u662f\u4e00\u7a2e\u8861\u91cf\u6578\u64da\u96c6\u5206\u6563\u7a0b\u5ea6\u7684\u6307\u6a19\u3002\u5b83\u544a\u8a34\u6211\u5011\u6578\u64da\u9ede\u8207\u5e73\u5747\u503c\u4e4b\u9593\u7684\u5dee\u7570\u7a0b\u5ea6\u3002\u65b9\u5dee\u8d8a\u5927\uff0c\u8868\u793a\u6578\u64da\u7684\u5206\u6563\u7a0b\u5ea6\u8d8a\u9ad8\uff0c\u53cd\u4e4b\u4ea6\u7136\u3002\u65b9\u5dee\u7684\u8a08\u7b97\u516c\u5f0f\u5982\u4e0b\uff1a<\/p>\n<pre class=\"brush: python\">\nvariance = (sum(x_i - mean)^2) \/ n\n<\/pre>\n<p>\u5176\u4e2d\uff0c<span style=\"font-weight: bold;\">x_i<\/span> \u4ee3\u8868\u6578\u7d44\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\uff0c<span style=\"font-weight: bold;\">mean<\/span> \u662f\u6578\u7d44\u7684\u5e73\u5747\u503c\uff0c\u800c <span style=\"font-weight: bold;\">n<\/span> \u5247\u662f\u5143\u7d20\u7684\u7e3d\u6578\u3002<\/p>\n<h2>\u5982\u4f55\u4f7f\u7528 TypeScript \u8a08\u7b97\u6578\u7d44\u7684\u65b9\u5dee\uff1f<\/h2>\n<p>\u5728 TypeScript \u4e2d\uff0c\u8a08\u7b97\u6578\u7d44\u7684\u65b9\u5dee\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u7c21\u55ae\u7684\u7a0b\u5f0f\u78bc\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre class=\"brush: python\">\nfunction calculateVariance(arr: number[]): number {\n  const n = arr.length;\n  if (n === 0) return 0; \/\/ \u907f\u514d\u9664\u4ee5\u96f6\u7684\u60c5\u6cc1\n\n  const mean = arr.reduce((acc, val) => acc + val, 0) \/ n; \/\/ \u8a08\u7b97\u5e73\u5747\u503c\n  const variance = arr.reduce((acc, val) => acc + Math.pow(val - mean, 2), 0) \/ n; \/\/ \u8a08\u7b97\u65b9\u5dee\n  \n  return variance;\n}\n\n\/\/ \u4f7f\u7528\u7bc4\u4f8b\nconst numbers = [1, 2, 3, 4, 5];\nconsole.log(`\u65b9\u5dee\u70ba: ${calculateVariance(numbers)}`);\n<\/pre>\n<p>\u9019\u6bb5\u7a0b\u5f0f\u78bc\u9996\u5148\u8a08\u7b97\u6578\u7d44\u7684\u5e73\u5747\u503c\uff0c\u7136\u5f8c\u5229\u7528 `reduce` \u65b9\u6cd5\u8a08\u7b97\u65b9\u5dee\uff0c\u904e\u7a0b\u7c21\u6f54\u9ad8\u6548\u3002\u7279\u5225\u6ce8\u610f\u7684\u662f\uff0c\u6211\u5011\u5728\u8a08\u7b97\u65b9\u5dee\u4e4b\u524d\u6aa2\u67e5\u6578\u7d44\u662f\u5426\u70ba\u7a7a\uff0c\u4ee5\u907f\u514d\u9664\u4ee5\u96f6\u7684\u932f\u8aa4\u3002<\/p>\n<h2>\u7e3d\u7d50<\/h2>\n<p>\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5b78\u7fd2\u4e86\u5982\u4f55\u4f7f\u7528 TypeScript \u4f86\u8a08\u7b97\u6578\u7d44\u7684\u65b9\u5dee\u3002\u6211\u5011\u89e3\u91cb\u4e86\u65b9\u5dee\u7684\u6982\u5ff5\u53ca\u5176\u8a08\u7b97\u516c\u5f0f\uff0c\u4e26\u63d0\u4f9b\u4e86\u4e00\u500b\u7c21\u55ae\u6613\u61c2\u7684 TypeScript \u5be6\u73fe\u7bc4\u4f8b\u3002\u5e0c\u671b\u9019\u7bc7\u6587\u7ae0\u80fd\u5e6b\u52a9\u4f60\u5728\u6578\u64da\u5206\u6790\u4e2d\u66f4\u597d\u5730\u4f7f\u7528 TypeScript\uff01<\/p>\n<p>&#8212;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6458\u8981\uff1a\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528TypeScript\u8a08\u7b97\u6578\u7d44\u7684\u65b9\u5dee\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u7c21\u55ae\u7684\u793a\u4f8b\u4f86\u89e3\u91cb\u5982\u4f55\u4f7f\u7528TypeScript\u8a08\u7b97\u6578\u7d44\u7684\u65b9\u5dee\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-5346","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\/pcFK27-1oe","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5346","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=5346"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5346\/revisions"}],"predecessor-version":[{"id":5347,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5346\/revisions\/5347"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=5346"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=5346"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=5346"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}