{"id":207060,"date":"2025-07-08T09:02:55","date_gmt":"2025-07-08T01:02:55","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207060\/"},"modified":"2025-07-08T09:02:55","modified_gmt":"2025-07-08T01:02:55","slug":"%e6%b6%89%e5%8f%8a%e5%b7%b2%e5%ae%9a%e4%b9%89%e5%8f%98%e9%87%8f%e7%9a%84%e5%8f%98%e9%87%8f%e7%ae%80%e5%86%99%e5%a3%b0%e6%98%8e%e6%98%af%e5%90%a6%e4%bc%9a%e5%88%86%e9%85%8d%e6%96%b0%e5%86%85%e5%ad%98","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207060\/","title":{"rendered":"\u6d89\u53ca\u5df2\u5b9a\u4e49\u53d8\u91cf\u7684\u53d8\u91cf\u7b80\u5199\u58f0\u660e\u662f\u5426\u4f1a\u5206\u914d\u65b0\u5185\u5b58\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<p>\u5f53\u524d\u4f4d\u7f6e\uff1a <span>&gt;<\/span> <span>&gt;<\/span> <span>&gt;<\/span> <span>&gt;<\/span> <span>\u6d89\u53ca\u5df2\u5b9a\u4e49\u53d8\u91cf\u7684\u53d8\u91cf\u7b80\u5199\u58f0\u660e\u662f\u5426\u4f1a\u5206\u914d\u65b0\u5185\u5b58\uff1f<\/span><\/p>\n<p><span>\u6765\u6e90\uff1astackoverflow<\/span><br \/>\n<span>2024-04-19 19:36:53<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u54c8\u55bd\uff01\u5927\u5bb6\u597d\uff0c\u5f88\u9ad8\u5174\u53c8\u89c1\u9762\u4e86\uff0c\u6211\u662f\u7684\u4e00\u540d\u4f5c\u8005\uff0c\u4eca\u5929\u7531\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u6d89\u53ca\u5df2\u5b9a\u4e49\u53d8\u91cf\u7684\u53d8\u91cf\u7b80\u5199\u58f0\u660e\u662f\u5426\u4f1a\u5206\u914d\u65b0\u5185\u5b58\uff1f\u300b<\/span>\uff0c\u672c\u6587\u4e3b\u8981\u4f1a\u8bb2\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u5927\u5bb6\u4e00\u8d77\u5b66\u4e60\u8fdb\u6b65\uff0c\u4e5f\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u3001\u70b9\u8d5e\u3001\u6536\u85cf\u3001\u8f6c\u53d1! \u4e0b\u9762\u5c31\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n<p> \u95ee\u9898\u5185\u5bb9<br \/>\n <\/p>\n<p>\u6211\u6709\u4e00\u4e2a\u8fd4\u56de\u503c <code>user<\/code> \u548c <code>err<\/code> \u7684\u51fd\u6570\u3002\u5f53\u6211\u5728\u8303\u56f4\u5185\u8c03\u7528\u5b83\u65f6\uff0c\u6211\u5df2\u7ecf\u6709\u53d8\u91cf <code>user<\/code> \uff0c\u4f46\u6ca1\u6709\u53d8\u91cf <code>err<\/code> \uff0c\u56e0\u6b64\u7f16\u8bd1\u5668\/linter \u544a\u8bc9\u6211\u4f7f\u7528 <code>:=<\/code> \u8fd0\u7b97\u7b26\u8bed\u6cd5\uff08\u6211\u77e5\u9053\u6211\u53ef\u4ee5\u5728\u8c03\u7528 <code>var<\/code> \u58f0\u660e\u4e4b\u524d\u5728\u67d0\u5904\u58f0\u660e <code>err<\/code> \uff09\uff0c\u4f7f\u5b83\u770b\u8d77\u6765\u50cf\u8fd9\u6837\uff1a<\/p>\n<pre>user := User{\"Name\"}\n...\nuser, err := functionThatReturnsTwoValues()\nif err != nil {\n...\n<\/pre>\n<p><strong>\u95ee\u9898\uff1a\u5728\u8fd9\u79cd\u7279\u5b9a\u60c5\u51b5\u4e0b\uff0c\u5728 <code>user, err := functionthatreturnstwovalues<\/code> \u884c\u4e2d\uff0c\u7528\u6237\u53d8\u91cf\u662f\u5426\u4f1a\u88ab\u91cd\u65b0\u58f0\u660e\uff1f<\/strong><\/p>\n<p><strong>p.s.<\/strong> \u6211\u4e5f\u660e\u767d\uff0c\u4ece\u5b9e\u9645\u7ed3\u679c\u6765\u770b\uff0c\u8fd9\u5bf9\u6211\u6765\u8bf4\u5e76\u4e0d\u91cd\u8981\uff0c\u56e0\u4e3a\u6700\u7ec8\uff0c\u65e0\u8bba\u5982\u4f55\uff0c\u5728\u51fd\u6570\u8c03\u7528\u540e\u6211\u90fd\u4f1a\u5f97\u5230\u5177\u6709\u6b63\u786e\u6570\u636e\u7684\u53d8\u91cf\u3002\u6b64\u5916\uff0c\u5728\u6211\u4eec\u7684\u4f8b\u5b50\u4e2d\uff0c\u8be5\u53d8\u91cf\u5c06\u5728\u5806\u6808\u4e2d\u5b9a\u4e49\uff0c\u8fd9\u610f\u5473\u7740\u5373\u4f7f\u521d\u59cb\u5316\u4e86 2 \u4e2a <code>user<\/code> \u7ed3\u6784\uff0c\u4e5f\u4e0d\u4f1a\u6d89\u53ca\u5783\u573e\u6536\u96c6\u6765\u6e05\u7406\u5b83\u3002<\/p>\n<p> <\/p>\n<h2>\u89e3\u51b3\u65b9\u6848<\/h2>\n<p> <\/p>\n<p>\u6211\u8ba4\u4e3a<em>user<\/em>\u53d8\u91cf\u6ca1\u6709\u88ab\u91cd\u65b0\u58f0\u660e\uff0c\u4f46\u5b83\u7684\u503c\u5f53\u7136\u88ab\u8986\u76d6\u4e86\u3002\u6211\u901a\u8fc7\u68c0\u67e5\u53d8\u91cf\u7684\u6307\u9488\u5730\u5740\u8fdb\u884c\u4e86\u6d4b\u8bd5\uff0c\u5982\u4e0b\u6240\u793a\u3002\u6b63\u5982\u60a8\u6240\u770b\u5230\u7684\uff0c\u7528\u4e8e\u6355\u83b7\u53d8\u91cf\u5730\u5740\u7684\u6307\u9488\u4fdd\u6301\u4e0d\u53d8\u3002<\/p>\n<\/p>\n<p>\u622a\u56fe\uff1a<\/p>\n<pre>func main() {\n    user := user{\"name\"}\n    up1 := &amp;user\n\n    user, err := functionthatreturnstwovalues()\n    up2 := &amp;user\n\n    if err == nil {\n        fmt.printf(\"user: %v \\n\", user)\n        fmt.printf(\"pointer check :  up1 ?=  up2 --&gt; %t [up1=%p, up2=%p]\\n\", up1 == up2, up1, up2)\n        fmt.printf(\"value check   : *up1 ?= *up2 --&gt; %t \\n\", *up1 == *up2)\n    }\n}<\/pre>\n<p>\u8f93\u51fa\u4e3a\uff1a<\/p>\n<pre>User: {Name2}  \nPointer check :  up1 ?=  up2 --&gt; true [up1=0x40c138, up2=0x40c138]\nValue check   : *up1 ?= *up2 --&gt; true<\/pre>\n<p>\u7528\u6237\u53d8\u91cf\u5c06\u7528\u4e8e\u5b58\u50a8\u51fd\u6570\u7684\u7ed3\u679c\uff0c\u8bf7\u53c2\u89c1\u4e0b\u9762\u7684\u793a\u4f8b<\/p>\n<\/p>\n<p>\u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300a\u6d89\u53ca\u5df2\u5b9a\u4e49\u53d8\u91cf\u7684\u53d8\u91cf\u7b80\u5199\u58f0\u660e\u662f\u5426\u4f1a\u5206\u914d\u65b0\u5185\u5b58\uff1f\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03Golang\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f53\u524d\u4f4d\u7f6e\uff1a &gt; &gt; &#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-207060","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207060","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=207060"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207060\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207060"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207060"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207060"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}