{"id":19043,"date":"2023-03-01T17:11:21","date_gmt":"2023-03-01T09:11:21","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=19043"},"modified":"2023-07-30T23:02:03","modified_gmt":"2023-07-30T15:02:03","slug":"go%e8%af%ad%e8%a8%80%e7%9a%84%e7%bb%93%e6%9e%84%e4%bd%93%e4%b8%ad%e6%80%8e%e4%b9%88%e8%ae%be%e7%bd%aenull%e5%80%bc","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/19043.html","title":{"rendered":"Go\u8bed\u8a00\u7684\u7ed3\u6784\u4f53\u4e2d\u600e\u4e48\u8bbe\u7f6enull\u503c"},"content":{"rendered":"<blockquote class=\"wp-block-quote\">\n<p>\u5982\u679c\u60f3\u5c06\u7ed3\u6784\u4f53\u4e2d\u7684\u67d0\u4e2a\u5b57\u6bb5\u8bbe\u7f6e\u4e3anull\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528\u6307\u9488\u7c7b\u578b\u7684\u5b57\u6bb5\u6765\u5b9e\u73b0\u3002\u5177\u4f53\u800c\u8a00\uff0c\u4f60\u53ef\u4ee5\u5c06\u8be5\u5b57\u6bb5\u7684\u7c7b\u578b\u8bbe\u7f6e\u4e3a\u5bf9\u5e94\u7c7b\u578b\u7684\u6307\u9488\u7c7b\u578b\uff0c\u4f8b\u5982*string\u3001*int\u3001*bool\u7b49\u7b49\u3002\u7136\u540e\uff0c\u5728\u9700\u8981\u5c06\u8be5\u5b57\u6bb5\u8bbe\u7f6e\u4e3anull\u503c\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u5c06\u6307\u9488\u8bbe\u7f6e\u4e3anil\u5373\u53ef\u3002<\/p>\n<\/blockquote>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img fetchpriority=\"high\" alt=\"\" class=\"wp-image-19044\" decoding=\"async\" height=\"421\" sizes=\"(max-width: 680px) 100vw, 680px\" src=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/03\/\u6a21\u677f2-\u526f\u672c-\u526f\u672c-\u526f\u672c-\u526f\u672c-2023-03-01T170906.801.jpg?x-oss-process=image\/auto-orient,1\/format,webp\" srcset=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/03\/\u6a21\u677f2-\u526f\u672c-\u526f\u672c-\u526f\u672c-\u526f\u672c-2023-03-01T170906.801.jpg?x-oss-process=image\/auto-orient,1\/format,webp 680w, https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/03\/\u6a21\u677f2-\u526f\u672c-\u526f\u672c-\u526f\u672c-\u526f\u672c-2023-03-01T170906.801-300x186.jpg 300w\" width=\"680\"\/><\/figure>\n<\/div>\n<h2 class=\"wp-block-heading\">\u4e00\u3001Go\u8bed\u8a00\u7684\u7ed3\u6784\u4f53\u4e2d\u8bbe\u7f6enull\u503c\u7684\u65b9\u6cd5<\/h2>\n<p>\u5728Go\u8bed\u8a00\u4e2d\uff0c\u7ed3\u6784\u4f53\u4e2d\u7684\u5b57\u6bb5\u9ed8\u8ba4\u662f\u6709\u96f6\u503c\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\u5b83\u4eec\u4f1a\u88ab\u8bbe\u7f6e\u4e3a\u5176\u7c7b\u578b\u7684\u9ed8\u8ba4\u503c\u3002\u4f8b\u5982\uff0c\u6574\u6570\u5b57\u6bb5\u7684\u9ed8\u8ba4\u503c\u4e3a0\uff0c\u5b57\u7b26\u4e32\u5b57\u6bb5\u7684\u9ed8\u8ba4\u503c\u4e3a\u201d\u201d\uff08\u7a7a\u5b57\u7b26\u4e32\uff09\uff0c\u5e03\u5c14\u5b57\u6bb5\u7684\u9ed8\u8ba4\u503c\u4e3afalse\u7b49\u7b49\u3002<\/p>\n<p>\u5982\u679c\u4f60\u60f3\u5c06\u7ed3\u6784\u4f53\u4e2d\u7684\u67d0\u4e2a\u5b57\u6bb5\u8bbe\u7f6e\u4e3anull\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528\u6307\u9488\u7c7b\u578b\u7684\u5b57\u6bb5\u6765\u5b9e\u73b0\u3002\u5177\u4f53\u800c\u8a00\uff0c\u4f60\u53ef\u4ee5\u5c06\u8be5\u5b57\u6bb5\u7684\u7c7b\u578b\u8bbe\u7f6e\u4e3a\u5bf9\u5e94\u7c7b\u578b\u7684\u6307\u9488\u7c7b\u578b\uff0c\u4f8b\u5982*string\u3001*int\u3001*bool\u7b49\u7b49\u3002\u7136\u540e\uff0c\u5728\u9700\u8981\u5c06\u8be5\u5b57\u6bb5\u8bbe\u7f6e\u4e3anull\u503c\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u5c06\u6307\u9488\u8bbe\u7f6e\u4e3anil\u5373\u53ef\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre class=\"wp-block-preformatted\">goCopy code<code>type Person struct {\n    Name  *string\n    Age   *int\n    Email *string\n}\n\nfunc main() {\n    var p Person\n    p.Name = nil  \/\/ \u5c06Name\u5b57\u6bb5\u8bbe\u7f6e\u4e3anull\u503c\n    p.Age = nil   \/\/ \u5c06Age\u5b57\u6bb5\u8bbe\u7f6e\u4e3anull\u503c\n    p.Email = nil \/\/ \u5c06Email\u5b57\u6bb5\u8bbe\u7f6e\u4e3anull\u503c\n}\n<\/code><\/pre>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5728\u8bbf\u95ee\u6307\u9488\u7c7b\u578b\u7684\u5b57\u6bb5\u4e4b\u524d\uff0c\u9700\u8981\u5148\u68c0\u67e5\u5176\u662f\u5426\u4e3anil\uff0c\u5426\u5219\u4f1a\u5bfc\u81f4\u7a7a\u6307\u9488\u5f02\u5e38\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5982\u679c\u60f3\u5c06\u7ed3\u6784\u4f53\u4e2d\u7684\u67d0\u4e2a\u5b57\u6bb5\u8bbe\u7f6e\u4e3anull\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528\u6307\u9488\u7c7b\u578b\u7684\u5b57\u6bb5\u6765\u5b9e\u73b0\u3002\u5177\u4f53\u800c\u8a00\uff0c\u4f60\u53ef\u4ee5\u5c06\u8be5\u5b57\u6bb5\u7684\u7c7b\u578b\u8bbe\u7f6e\u4e3a [&hellip;]","protected":false},"author":1,"featured_media":19045,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[119],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/19043"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=19043"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/19043\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/19045"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=19043"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=19043"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=19043"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}