{"id":4880,"date":"2023-01-05T11:11:43","date_gmt":"2023-01-05T03:11:43","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=4880"},"modified":"2023-01-05T11:11:43","modified_gmt":"2023-01-05T03:11:43","slug":"%e4%ba%86%e8%a7%a3typescript%e4%b8%ad%e7%9a%84%e6%b3%9b%e5%9e%8bgenerics%e5%8a%9f%e8%83%bd","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/typescript\/%e4%ba%86%e8%a7%a3typescript%e4%b8%ad%e7%9a%84%e6%b3%9b%e5%9e%8bgenerics%e5%8a%9f%e8%83%bd\/","title":{"rendered":"\u4e86\u89e3TypeScript\u4e2d\u7684\u6cdb\u578b(Generics)\u529f\u80fd"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"TypeScript, \u6cdb\u578b, Generics\"><\/p>\n<h1>TypeScript \u6cdb\u578b(Generics) \u4ecb\u7d39<\/h1>\n<p>TypeScript \u6cdb\u578b(Generics) \u662f\u4e00\u7a2e\u62bd\u8c61\u7684\u6982\u5ff5\uff0c\u53ef\u4ee5\u8b93\u4f60\u5728\u5b9a\u7fa9\u51fd\u5f0f\u3001\u985e\u5225\u6216\u662f\u63a5\u53e3\u6642\uff0c\u4e0d\u9700\u8981\u6307\u5b9a\u5177\u9ad4\u7684\u985e\u578b\uff0c\u800c\u662f\u5728\u4f7f\u7528\u6642\u518d\u6307\u5b9a\u3002\u5b83\u53ef\u4ee5\u8b93\u4f60\u5728\u5b9a\u7fa9\u51fd\u5f0f\u3001\u985e\u5225\u6216\u662f\u63a5\u53e3\u6642\uff0c\u66f4\u52a0\u5f48\u6027\uff0c\u53ef\u4ee5\u652f\u63f4\u66f4\u591a\u7684\u985e\u578b\uff0c\u800c\u4e0d\u50c5\u50c5\u662f\u4e00\u7a2e\u985e\u578b\u3002<\/p>\n<p><!--more--><\/p>\n<p>TypeScript \u6cdb\u578b\u7684\u57fa\u672c\u8a9e\u6cd5\u662f\u5728\u51fd\u5f0f\u3001\u985e\u5225\u6216\u662f\u63a5\u53e3\u540d\u7a31\u5f8c\u9762\u52a0\u4e0a <code>&lt;T&gt;<\/code>\uff0c\u5176\u4e2d <code>T<\/code> \u662f TypeScript \u6cdb\u578b\u7684\u578b\u5225\u8b8a\u6578\uff0c\u53ef\u4ee5\u5728\u51fd\u5f0f\u3001\u985e\u5225\u6216\u662f\u63a5\u53e3\u4e2d\u4f7f\u7528\u3002<\/p>\n<p>\u8209\u500b\u4f8b\u5b50\uff0c\u5047\u8a2d\u6211\u5011\u8981\u5b9a\u7fa9\u4e00\u500b\u51fd\u5f0f\uff0c\u53ef\u4ee5\u63a5\u6536\u4efb\u4f55\u985e\u578b\u7684\u53c3\u6578\uff0c\u4e26\u4e14\u56de\u50b3\u8a72\u53c3\u6578\u7684\u578b\u5225\uff1a<\/p>\n<pre class=\"brush: typescript\">\nfunction identity<T>(arg: T): T {\n    return arg;\n}\n<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b\u540d\u70ba <code>identity<\/code> \u7684\u51fd\u5f0f\uff0c\u5b83\u63a5\u6536\u4e00\u500b\u53c3\u6578 <code>arg<\/code>\uff0c\u4e26\u4e14\u56de\u50b3\u8a72\u53c3\u6578\u7684\u578b\u5225\u3002\u7531\u65bc\u6211\u5011\u5728\u51fd\u5f0f\u540d\u7a31\u5f8c\u9762\u52a0\u4e0a\u4e86 <code>&lt;T&gt;<\/code>\uff0c\u6240\u4ee5 <code>T<\/code> \u662f\u4e00\u500b\u578b\u5225\u8b8a\u6578\uff0c\u5b83\u53ef\u4ee5\u4ee3\u8868\u4efb\u4f55\u985e\u578b\uff0c\u5728\u51fd\u5f0f\u4e2d\u53ef\u4ee5\u4f7f\u7528 <code>T<\/code> \u4f86\u5b9a\u7fa9\u53c3\u6578\u548c\u56de\u50b3\u503c\u7684\u578b\u5225\u3002<\/p>\n<p>\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 TypeScript \u6cdb\u578b\u4f86\u5b9a\u7fa9\u51fd\u5f0f\u3001\u985e\u5225\u6216\u662f\u63a5\u53e3\uff0c\u8b93\u5b83\u5011\u53ef\u4ee5\u652f\u63f4\u66f4\u591a\u7684\u985e\u578b\uff0c\u800c\u4e0d\u50c5\u50c5\u662f\u4e00\u7a2e\u985e\u578b\u3002\u9019\u6a23\u53ef\u4ee5\u8b93\u6211\u5011\u7684\u7a0b\u5f0f\u78bc\u66f4\u52a0\u5f48\u6027\uff0c\u4e5f\u66f4\u52a0\u5bb9\u6613\u7dad\u8b77\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6458\u8981(Description):TypeScript\u4e2d\u7684\u6cdb\u578b(Generics)\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u6709\u6548\u7387\u7684\u958b\u767c\u51fa\u66f4\u7b26\u5408\u9700\u6c42\u7684\u7a0b\u5f0f\u78bc\uff0c\u672c\u6587\u5c07\u4ecb\u7d39TypeScript\u4e2d\u7684\u6cdb\u578b(Generics)\u529f\u80fd\uff0c\u8b93\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u6709\u6548\u7387\u7684\u958b\u767c\u51fa\u66f4\u7b26\u5408\u9700\u6c42\u7684\u7a0b\u5f0f\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-4880","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\/pcFK27-1gI","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4880","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=4880"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4880\/revisions"}],"predecessor-version":[{"id":4881,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4880\/revisions\/4881"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=4880"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=4880"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=4880"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}