{"id":206731,"date":"2025-06-12T13:15:20","date_gmt":"2025-06-12T05:15:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/206731\/"},"modified":"2025-06-12T13:15:20","modified_gmt":"2025-06-12T05:15:20","slug":"go-%e8%af%ad%e8%a8%80%e4%b8%ad%ef%bc%8cdefer-%e5%92%8c-return-%e7%9a%84%e6%89%a7%e8%a1%8c%e9%a1%ba%e5%ba%8f%e6%98%af%e6%80%8e%e6%a0%b7%e7%9a%84%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/206731\/","title":{"rendered":"Go \u8bed\u8a00\u4e2d\uff0cdefer \u548c return \u7684\u6267\u884c\u987a\u5e8f\u662f\u600e\u6837\u7684\uff1f"},"content":{"rendered":"<p>\u600e\u4e48\u5165\u95e8GOLANG\u7f16\u7a0b\uff1f\u9700\u8981\u5b66\u4e60\u54ea\u4e9b\u77e5\u8bc6\u70b9\uff1f\u8fd9\u662f\u65b0\u624b\u4eec\u521a\u63a5\u89e6\u7f16\u7a0b\u65f6\u5e38\u89c1\u7684\u95ee\u9898\uff1b\u4e0b\u9762GOLANG\u5c31\u6765\u7ed9\u5927\u5bb6\u6574\u7406\u5206\u4eab\u4e00\u4e9b\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u591f\u7ed9\u521d\u5b66\u8005\u4e00\u4e9b\u5e2e\u52a9\u3002\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u4ecb\u7ecd\u300aGo \u8bed\u8a00\u4e2d\uff0cdefer \u548c return \u7684\u6267\u884c\u987a\u5e8f\u662f\u600e\u6837\u7684\uff1f\u300b\uff0c\u6d89\u53ca\u5230\uff0c\u6709\u9700\u8981\u7684\u53ef\u4ee5\u6536\u85cf\u4e00\u4e0b,<br \/>\n<img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241120\/1732113046673df296d5ebb.jpg\" class=\"aligncenter\">,<br \/>\n<strong>Go \u8bed\u8a00\u4e2d return \u548c defer \u7684\u56f0\u60d1<\/strong>,\u5728 Go \u8bed\u8a00\u4e2d\uff0cdefer \u53ef\u4ee5\u7528\u6765\u5ef6\u8fdf\u6267\u884c\u67d0\u4e2a\u51fd\u6570\u6216\u8bed\u53e5\uff0c\u76f4\u5230\u5f53\u524d\u51fd\u6570\u6216\u65b9\u6cd5\u8fd4\u56de\u4e4b\u540e\u3002\u8be5\u673a\u5236\u5e38\u5e38\u4f1a\u5f15\u8d77\u4e00\u4e9b\u7591\u60d1\u3002,<br \/>\n<strong>f0() \u51fd\u6570<\/strong>,f0() \u51fd\u6570\u4e2d\uff0c\u867d\u7136\u8fd4\u56de\u7684\u662f 0\uff0c\u4f46\u8fd8\u6709\u4e00\u4e2a defer \u51fd\u6570\u5728 return \u540e\u6267\u884c\u3002\u8be5 defer \u51fd\u6570\u4f1a\u8ba9 result \u53d8\u91cf\u52a0 1\u3002\u7531\u4e8e result \u5728\u51fd\u6570\u5f00\u59cb\u5904\u5df2\u58f0\u660e\u5e76\u521d\u59cb\u5316\u4e3a 0\uff0c\u56e0\u6b64 defer \u51fd\u6570\u6267\u884c\u540e\uff0c\u8fd4\u56de\u7684\u503c\u5c06\u53d8\u4e3a 1\u3002,<br \/>\n<strong>f1() \u51fd\u6570<\/strong>,f1() \u51fd\u6570\u4e2d\uff0cresult \u53d8\u91cf\u5728 return \u4e4b\u524d\u76f4\u63a5\u8d4b\u503c\u4e3a 0\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0creturn \u8bed\u53e5\u5e76\u4e0d\u662f\u4e00\u4e2a\u539f\u5b50\u7684\u8c03\u7528\uff0c\u800c\u662f\u5305\u542b\u4e86\u8d4b\u503c\u548c RET \u6307\u4ee4\u3002\u5728\u6267\u884c return \u65f6\uff0c\u9996\u5148\u5c06 result \u8d4b\u503c\u4e3a 0\uff0c\u7136\u540e\u518d\u6267\u884c RET \u6307\u4ee4\uff0c\u9000\u51fa\u51fd\u6570\u3002\u7531\u4e8e result \u662f\u4e00\u4e2a int \u7c7b\u578b\u53d8\u91cf\uff0c\u5b83\u7684\u9ed8\u8ba4\u503c\u4e3a 0\uff0c\u56e0\u6b64\u6700\u7ec8\u8fd4\u56de\u7684\u503c\u4e5f\u662f 0\u3002,<br \/>\n<strong>\u603b\u7ed3<\/strong>,\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8eGOLANG\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~,return \u8bed\u53e5\u5305\u542b\u8d4b\u503c\u548c RET \u6307\u4ee4\uff0c\u987a\u5e8f\u6267\u884c\u3002,defer \u51fd\u6570\u4f1a\u5728 return \u4e4b\u540e\u6267\u884c\uff0c\u53ef\u4ee5\u5728\u8fd4\u56de\u503c\u5904\u5bf9\u53d8\u91cf\u8fdb\u884c\u64cd\u4f5c\u3002,int \u7c7b\u578b\u7684\u9ed8\u8ba4\u503c\u4e3a 0\uff0c\u800c slice\u3001map \u7b49\u590d\u6742\u7c7b\u578b\u53d8\u91cf\u7684\u9ed8\u8ba4\u503c\u4e3a nil\u3002,Go \u8bed\u8a00\u4e2d return \u548c defer \u7684\u56f0\u60d1,\u600e\u4e48\u5165\u95e8GOLANG\u7f16\u7a0b\uff1f\u9700\u8981\u5b66\u4e60\u54ea\u4e9b\u77e5\u8bc6\u70b9\uff1f\u8fd9\u662f\u65b0\u624b\u4eec\u521a\u63a5\u89e6\u7f16\u7a0b\u65f6\u5e38\u89c1\u7684\u95ee\u9898\uff1b\u4e0b\u9762GOLANG\u5c31\u6765\u7ed9\u5927\u5bb6\u6574\u7406\u5206\u4eab\u4e00\u4e9b\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u591f\u7ed9\u521d\u5b66\u8005\u4e00\u4e9b\u5e2e\u52a9\u3002\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u4ecb\u7ecd\u300aGo \u8bed\u8a00\u4e2d\uff0cdefer \u548c return \u7684\u6267\u884c\u987a\u5e8f\u662f\u600e\u6837\u7684\uff1f\u300b\uff0c\u6d89\u53ca\u5230\uff0c\u6709\u9700\u8981\u7684\u53ef\u4ee5\u6536\u85cf\u4e00\u4e0b,<br \/>\n<b><\/b> <\/p>\n<p>\u5f53\u524d\u4f4d\u7f6e\uff1a <span>&gt;<\/span>  <span>&gt;<\/span>  <span>&gt;<\/span>  <span>&gt;<\/span> <span>Go \u8bed\u8a00\u4e2d\uff0cdefer \u548c return \u7684\u6267\u884c\u987a\u5e8f\u662f\u600e\u6837\u7684\uff1f<\/span><\/p>\n<h1>Go \u8bed\u8a00\u4e2d\uff0cdefer \u548c return \u7684\u6267\u884c\u987a\u5e8f\u662f\u600e\u6837\u7684\uff1f<\/h1>\n<p><span>2024-11-20 22:31:02<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u600e\u4e48\u5165\u95e8GOLANG\u7f16\u7a0b\uff1f\u9700\u8981\u5b66\u4e60\u54ea\u4e9b\u77e5\u8bc6\u70b9\uff1f\u8fd9\u662f\u65b0\u624b\u4eec\u521a\u63a5\u89e6\u7f16\u7a0b\u65f6\u5e38\u89c1\u7684\u95ee\u9898\uff1b\u4e0b\u9762GOLANG\u5c31\u6765\u7ed9\u5927\u5bb6\u6574\u7406\u5206\u4eab\u4e00\u4e9b\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u591f\u7ed9\u521d\u5b66\u8005\u4e00\u4e9b\u5e2e\u52a9\u3002\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u4ecb\u7ecd\u300aGo \u8bed\u8a00\u4e2d\uff0cdefer \u548c return \u7684\u6267\u884c\u987a\u5e8f\u662f\u600e\u6837\u7684\uff1f\u300b\uff0c\u6d89\u53ca\u5230\uff0c\u6709\u9700\u8981\u7684\u53ef\u4ee5\u6536\u85cf\u4e00\u4e0b<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241120\/1732113046673df296d5ebb.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>Go \u8bed\u8a00\u4e2d return \u548c defer \u7684\u56f0\u60d1<\/strong><\/p>\n<p>\u5728 Go \u8bed\u8a00\u4e2d\uff0cdefer \u53ef\u4ee5\u7528\u6765\u5ef6\u8fdf\u6267\u884c\u67d0\u4e2a\u51fd\u6570\u6216\u8bed\u53e5\uff0c\u76f4\u5230\u5f53\u524d\u51fd\u6570\u6216\u65b9\u6cd5\u8fd4\u56de\u4e4b\u540e\u3002\u8be5\u673a\u5236\u5e38\u5e38\u4f1a\u5f15\u8d77\u4e00\u4e9b\u7591\u60d1\u3002<\/p>\n<p><strong>f0() \u51fd\u6570<\/strong><\/p>\n<p>f0() \u51fd\u6570\u4e2d\uff0c\u867d\u7136\u8fd4\u56de\u7684\u662f 0\uff0c\u4f46\u8fd8\u6709\u4e00\u4e2a defer \u51fd\u6570\u5728 return \u540e\u6267\u884c\u3002\u8be5 defer \u51fd\u6570\u4f1a\u8ba9 result \u53d8\u91cf\u52a0 1\u3002\u7531\u4e8e result \u5728\u51fd\u6570\u5f00\u59cb\u5904\u5df2\u58f0\u660e\u5e76\u521d\u59cb\u5316\u4e3a 0\uff0c\u56e0\u6b64 defer \u51fd\u6570\u6267\u884c\u540e\uff0c\u8fd4\u56de\u7684\u503c\u5c06\u53d8\u4e3a 1\u3002<\/p>\n<p><strong>f1() \u51fd\u6570<\/strong><\/p>\n<p>f1() \u51fd\u6570\u4e2d\uff0cresult \u53d8\u91cf\u5728 return \u4e4b\u524d\u76f4\u63a5\u8d4b\u503c\u4e3a 0\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0creturn \u8bed\u53e5\u5e76\u4e0d\u662f\u4e00\u4e2a\u539f\u5b50\u7684\u8c03\u7528\uff0c\u800c\u662f\u5305\u542b\u4e86\u8d4b\u503c\u548c RET \u6307\u4ee4\u3002\u5728\u6267\u884c return \u65f6\uff0c\u9996\u5148\u5c06 result \u8d4b\u503c\u4e3a 0\uff0c\u7136\u540e\u518d\u6267\u884c RET \u6307\u4ee4\uff0c\u9000\u51fa\u51fd\u6570\u3002\u7531\u4e8e result \u662f\u4e00\u4e2a int \u7c7b\u578b\u53d8\u91cf\uff0c\u5b83\u7684\u9ed8\u8ba4\u503c\u4e3a 0\uff0c\u56e0\u6b64\u6700\u7ec8\u8fd4\u56de\u7684\u503c\u4e5f\u662f 0\u3002<\/p>\n<p><strong>\u603b\u7ed3<\/strong><\/p>\n<ul>\n<li>defer \u51fd\u6570\u4f1a\u5728 return \u4e4b\u540e\u6267\u884c\uff0c\u53ef\u4ee5\u5728\u8fd4\u56de\u503c\u5904\u5bf9\u53d8\u91cf\u8fdb\u884c\u64cd\u4f5c\u3002<\/li>\n<li>return \u8bed\u53e5\u5305\u542b\u8d4b\u503c\u548c RET \u6307\u4ee4\uff0c\u987a\u5e8f\u6267\u884c\u3002<\/li>\n<li>int \u7c7b\u578b\u7684\u9ed8\u8ba4\u503c\u4e3a 0\uff0c\u800c slice\u3001map \u7b49\u590d\u6742\u7c7b\u578b\u53d8\u91cf\u7684\u9ed8\u8ba4\u503c\u4e3a nil\u3002<\/li>\n<\/ul>\n<p>\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8eGOLANG\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   \u5982\u4f55\u5b9e\u73b0PC\u7aef\u548cH5\u7aef\u7684\u517c\u987e\u5f00\u53d1\uff0c\u5e76\u5b9e\u73b0\u591a\u5c4f\u9002\u914d\uff1f\n <\/dd>\n<\/dl>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   Python \u5199\u5165 TXT \u6587\u4ef6\u62a5\u9519\uff1a\u4e3a\u4ec0\u4e48 PyInstaller \u6253\u5305\u540e\u7684 .pyw \u6587\u4ef6\u4e0d\u80fd\u5199\u5165\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u600e\u4e48\u5165\u95e8GOLANG\u7f16\u7a0b\uff1f\u9700\u8981\u5b66&#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-206731","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206731","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=206731"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206731\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=206731"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=206731"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=206731"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}