{"id":206978,"date":"2025-07-08T08:07:24","date_gmt":"2025-07-08T00:07:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/206978\/"},"modified":"2025-07-08T08:07:24","modified_gmt":"2025-07-08T00:07:24","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88%e5%87%bd%e6%95%b0%e4%b8%ad%e6%98%be%e5%bc%8f%e9%9c%80%e8%a6%81return%e8%af%ad%e5%8f%a5%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/206978\/","title":{"rendered":"\u4e3a\u4ec0\u4e48\u51fd\u6570\u4e2d\u663e\u5f0f\u9700\u8981return\u8bed\u53e5\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u4e3a\u4ec0\u4e48\u51fd\u6570\u4e2d\u663e\u5f0f\u9700\u8981return\u8bed\u53e5\uff1f<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-19 10:18:35<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u52aa\u529b\u5b66\u4e60\u5427\uff01\u672c\u6587\u300a\u4e3a\u4ec0\u4e48\u51fd\u6570\u4e2d\u663e\u5f0f\u9700\u8981return\u8bed\u53e5\uff1f\u300b<\/span>\u4e3b\u8981\u8bb2\u89e3\u4e86<\/span>\u7b49\u7b49\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6211\u4f1a\u5728\u4e2d\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u7684\u7cfb\u5217\u6587\u7ae0\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u5e76\u79ef\u6781\u7559\u8a00\u5efa\u8bae\u3002\u4e0b\u9762\u5c31\u5148\u4e00\u8d77\u6765\u770b\u4e00\u4e0b\u672c\u7bc7\u6b63\u6587\u5185\u5bb9\u5427\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01<\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u5f53\u7f16\u8bd1\u5668\u77e5\u9053\u5b83\u8fd4\u56de\u7684\u5185\u5bb9\uff08\u793a\u4f8b\u4e2d\u7684 fullname\uff09\u65f6\uff0c\u4e3a\u4ec0\u4e48\u5b83\u9700\u8981\u663e\u5f0f return \u8bed\u53e5\uff1f<\/p>\n

func fullName(firstName string, lastName string) (fullName string) {\n    fullName = firstName + \" \" + lastName\n    return \/\/ Why explicit return?\n}<\/pre>\n
 <\/p>\n
\u6b63\u786e\u7b54\u6848<\/h2>\n
 <\/p>\n
\u4e3a\u4e86\u5f15\u7528\u660e\u786e\u7684\u539f\u56e0\uff0c\u8fd9\u662f\u89c4\u8303\u4e2d\u6700\u76f8\u5173\u7684\u5b9e\u9645\u89c4\u5219<\/p>\n<\/p>\n
\u9605\u8bfb\u201c\u7ec8\u6b62\u58f0\u660e\u201d\u7684\u94fe\u63a5\u4ee5\u67e5\u770b\u5b8c\u6574\u5217\u8868\u3002\u8bf7\u6ce8\u610f\uff0c\u867d\u7136\u5b83\u4eec\u88ab\u79f0\u4e3a\u201c\u7ec8\u6b62\u201d\uff0c\u4f46\u9664 return<\/code>\uff08\u548c panic<\/code>…\uff09\u4e4b\u5916\u7684\u6240\u6709\u8bed\u53e5\u90fd\u662f\u6c38\u8fdc\u4e0d\u4f1a\u7ec8\u6b62<\/strong>\u7684\u8bed\u53e5\u3002<\/p>\n
\u56e0\u6b64\u89e3\u91ca\u89c4\u5219\u7684\u53e6\u4e00\u79cd\u65b9\u5f0f\u662f\u8fd9\u6837\u7684\uff08\u5ffd\u7565 panic<\/code>…\uff09\uff1a<\/p>\n
\u8fd9\u610f\u5473\u7740\u50cf\u8fd9\u6837\u7684\u51fd\u6570\u4e5f\u662f\u5408\u6cd5\u7684\uff1a<\/p>\n
func get() string {\n    for {\n        fmt.println(\"not returning yet\")\n    }\n}\n<\/pre>\n
\u5c3d\u7ba1\u58f0\u660e\u4e86\u8fd4\u56de\u7c7b\u578b\uff0c\u4f46\u8be5\u51fd\u6570 get<\/code> \u53ef\u80fd\u6c38\u8fdc\u4e0d\u4f1a\u7ec8\u6b62\uff0c\u56e0\u6b64\u5b83\u4e0d\u9700\u8981 return \u8bed\u53e5\u3002<\/p>\n
\u8fd9\u6761\u89c4\u5219\u7684\u52a8\u673a<\/em>\u662f\u4ec0\u4e48\uff1f\u8fd9\u4e2a\u95ee\u9898\u65e2\u57fa\u4e8e\u89c2\u70b9\u53c8\u57fa\u4e8e\u731c\u6d4b\u3002\u5b83\u9075\u5faa\u201c\u6e05\u6670\u80dc\u4e8e\u806a\u660e\u201d\u7684\u539f\u5219\uff0c\u4e5f\u662f\u3002<\/p>\n
\u770b\u770b panic<\/code> \u548c recover<\/code> \u521b\u5efa\u7684\u8fd9\u4e2a\u5947\u602a\u7684\u60c5\u51b5\uff1a<\/p>\n
package main\n\nimport (\n    \"fmt\"\n)\n\nfunc get() (s string) {\n    defer func() {\n        err  := recover()\n        fmt.println(\"recovered error:\", err)\n    }()\n    \n    s = \"hi\"\n\n    panic(\"terminating panic\")\n}\n\nfunc main() {\n    s := get()\n    fmt.println(\"s =\", s)\n}\n<\/pre>\n
\u8f93\u51fa\uff1a<\/p>\n
recovered error: terminating panic\ns = hi<\/pre>\n
\u60a8\u4f1a\u6ce8\u610f\u5230 get<\/code> \u6ca1\u6709 return \u8bed\u53e5\uff0c\u4f46\u5b83\u80fd\u591f\u8fd4\u56de\u6b64\u503c \"hi\"<\/code>\u3002<\/p>\n
\u672c\u7bc7\u5173\u4e8e\u300a\u4e3a\u4ec0\u4e48\u51fd\u6570\u4e2d\u663e\u5f0f\u9700\u8981return\u8bed\u53e5\uff1f\u300b\u7684\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\u5566\uff0c\u4f46\u662f\u5b66\u65e0\u6b62\u5883\uff0c\u60f3\u8981\u4e86\u89e3\u5b66\u4e60\u66f4\u591a\u5173\u4e8eGolang\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f53\u524d\u4f4d\u7f6e\uff1a > > ...<\/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-206978","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206978","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=206978"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206978\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=206978"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=206978"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=206978"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}