{"id":207187,"date":"2025-07-08T08:32:52","date_gmt":"2025-07-08T00:32:52","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207187\/"},"modified":"2025-07-08T08:32:52","modified_gmt":"2025-07-08T00:32:52","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8go%e4%b8%ad%e7%9a%84%e5%8d%95%e4%b8%aa%e8%af%ad%e5%8f%a5%e4%b8%ad%e5%a3%b0%e6%98%8e%e4%b8%8d%e5%90%8c%e6%95%b0%e6%8d%ae%e7%b1%bb%e5%9e%8b%e7%9a%84%e5%8f%98%e9%87%8f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207187\/","title":{"rendered":"\u5982\u4f55\u5728Go\u4e2d\u7684\u5355\u4e2a\u8bed\u53e5\u4e2d\u58f0\u660e\u4e0d\u540c\u6570\u636e\u7c7b\u578b\u7684\u53d8\u91cf"},"content":{"rendered":"

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

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u5982\u4f55\u5728Go\u4e2d\u7684\u5355\u4e2a\u8bed\u53e5\u4e2d\u58f0\u660e\u4e0d\u540c\u6570\u636e\u7c7b\u578b\u7684\u53d8\u91cf<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-20 18:12:35<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u77e5\u8bc6\u70b9\u638c\u63e1\u4e86\uff0c\u8fd8\u9700\u8981\u4e0d\u65ad\u7ec3\u4e60\u624d\u80fd\u719f\u7ec3\u8fd0\u7528\u3002\u4e0b\u9762\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u4e2aGolang\u5f00\u53d1\u5b9e\u6218\uff0c\u624b\u628a\u624b\u6559\u5927\u5bb6\u5b66\u4e60\u300a\u5982\u4f55\u5728Go\u4e2d\u7684\u5355\u4e2a\u8bed\u53e5\u4e2d\u58f0\u660e\u4e0d\u540c\u6570\u636e\u7c7b\u578b\u7684\u53d8\u91cf\u300b\uff0c\u5728\u5b9e\u73b0\u529f\u80fd\u7684\u8fc7\u7a0b\u4e2d\u4e5f\u5e26\u5927\u5bb6\u91cd\u65b0\u6e29\u4e60\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6e29\u6545\u800c\u77e5\u65b0\uff0c\u56de\u5934\u770b\u770b\u8bf4\u4e0d\u5b9a\u53c8\u6709\u4e0d\u4e00\u6837\u7684\u611f\u609f\uff01<\/p>\n

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

\u6211\u60f3\u5728 go \u4e2d\u7684\u4e00\u6761\u8bed\u53e5\u4e2d\u58f0\u660e\u4e24\u4e2a\u4e0d\u540c\u6570\u636e\u7c7b\u578b\u7684\u53d8\u91cf\uff08string<\/code> \u548c error<\/code>\uff09\u3002\u6211\u4e0d\u60f3\u4f7f\u7528\u77ed\u58f0\u660e(:=<\/code>) \u8fd0\u7b97\u7b26\uff0c\u56e0\u4e3a\u6211\u559c\u6b22\u5728\u58f0\u660e\u65f6\u6307\u5b9a\u53d8\u91cf\u7684\u7c7b\u578b\u3002<\/p>\n

\u6211\u6b63\u5728\u5173\u6ce8 go \u6587\u6863\u4e2d\u7684 go \u6559\u7a0b\u3002\u6211\u6709\u4e00\u4e2a\u540d\u4e3a greetings.hello()<\/code> \u7684\u51fd\u6570\uff0c\u6211\u4ece\u53e6\u4e00\u4e2a\u6a21\u5757\u8c03\u7528\u5b83\u3002 greetings.hello()<\/code> \u51fd\u6570\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n

package greetings\n\nimport (\n    \"errors\"\n    \"fmt\"\n)\n\nfunc hello(name string) (string, error) {\n    \/\/ if no name was given, return an error with a message\n    if name == \"\" {\n        return \"\", errors.new(\"empty name\")\n    }\n\n    \/\/ if a name was received, return a value\n    var message string = fmt.sprintf(\"welcome %v!\", name)\n    return message, nil\n}\n<\/pre>\n
\u5982\u60a8\u6240\u89c1\uff0c\u8be5\u51fd\u6570\u8fd4\u56de\u4e24\u4e2a\u503c\uff08string<\/code> \u548c error<\/code>\uff09\u3002\u6240\u4ee5\u6700\u7ec8\uff0c\u6211\u5fc5\u987b\u5c06\u8be5\u51fd\u6570\u7684\u7ed3\u679c\u5206\u914d\u7ed9\u8c03\u7528\u8005\u4e2d\u7684\u4e24\u4e2a\u53d8\u91cf\u3002\u6211\u4ece\u540d\u4e3a hello<\/code> \u7684\u6a21\u5757\u8c03\u7528 greetings.hello()<\/code> \u51fd\u6570\u3002 hello<\/code>\u6a21\u5757\u7684main\u5305\u7684\u4e3b\u8981\u51fd\u6570\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
package main\n\nimport (\n    \"fmt\"\n    \"log\"\n\n    \"creating_modules\/greetings\"\n)\n\nfunc main() {\n    log.setprefix(\"greetings: \")\n    log.setflags(0)\n\n    var message string, err error = greetings.hello(\"\")\n    if err !=nil {\n        log.fatal(err)\n    }\n\n    fmt.println(message)\n}\n<\/pre>\n
creating_modules\/greetings<\/code> \u662f\u5305\u542b\u51fd\u6570 hello()<\/code> \u7684\u95ee\u5019\u8bed\u6a21\u5757\u3002\u5927\u591a\u6570\u5730\u9f20\u90fd\u662f\u8fd9\u6837\u5904\u7406\u7684\uff1a<\/p>\n
message, error := greetings.hello()\n<\/pre>\n
\u4f46\u6211\u60f3\u5728\u4e00\u6761\u8bed\u53e5\u4e2d\u58f0\u660e\u53d8\u91cf\u53ca\u5176\u6570\u636e\u7c7b\u578b\u3002\u53e6\u5916\uff0c\u8fd9\u4e24\u4e2a\u53d8\u91cf\u5e94\u8be5\u88ab\u8d4b\u4e88 greetings.hello()<\/code> \u7684\u8fd4\u56de\u503c\u3002\u4e0a\u9762\u63d0\u5230\u7684hello<\/code>\u6a21\u5757\u7684main\u51fd\u6570\uff0c\u7531\u4e8e\u8d4b\u503c\u4e0d\u6b63\u786e\uff0c\u8fd0\u884c\u65f6\u8fd4\u56de\u9519\u8bef\uff0c\u53c2\u8003\u8fd9\u4e00\u884c\uff1a<\/p>\n
var message string, err error = greetings.hello(\"\")\n<\/pre>\n
\u5f53\u4f7f\u7528 go run<\/code> \u8fd0\u884c\u6b64\u4ee3\u7801\u65f6\uff0cgo \u7f16\u8bd1\u5668\u8fd4\u56de\u6b64\u9519\u8bef\uff1a<\/p>\n
.\\hello.go:14:20: syntax error: unexpected comma at end of statement<\/pre>\n
\u53ea\u9700\u590d\u5236\u7c98\u8d34\u4e0a\u9762\u7684\u4ee3\u7801\u5373\u53ef\u91cd\u73b0\u6b64\u95ee\u9898\uff08\u8bf7\u6ce8\u610f\uff0cgreetings<\/code> \u6a21\u5757\u662f\u672c\u5730\u6a21\u5757\uff0c\u56e0\u6b64\u60a8\u9700\u8981\u4f7f\u7528 go edit -replace<\/code> \u8bbe\u7f6e go \u5de5\u5177\u7684\u5f15\u7528\u8def\u5f84\uff09<\/p>\n
\u53e6\u4e00\u4ef6\u4e8b\u8981\u6ce8\u610f\u7684\u662f\uff0c\u6211\u7684\u95ee\u9898\u4e0e\u8fd9\u4e2a\u95ee\u9898\u4e0d\u540c\uff0c\u56e0\u4e3a\u8be5\u95ee\u9898\u662f\u5173\u4e8e\u5728\u5355\u4e2a\u8bed\u53e5\u4e2d\u58f0\u660e\u5177\u6709\u76f8\u540c\u6570\u636e\u7c7b\u578b<\/strong>\u7684\u53d8\u91cf\uff0c\u800c\u6211\u7684\u95ee\u9898\u662f\u5173\u4e8e\u4f7f\u7528\u58f0\u660e\u591a\u4e2a\u53d8\u91cf>\u5355\u4e2a\u8bed\u53e5\u4e2d\u7684\u4e0d\u540c\u6570\u636e\u7c7b\u578b<\/strong>\u3002<\/p>\n
p.s \u5982\u679c\u6211\u77e5\u9053 golang \u6ca1\u6709\u8fd9\u4e2a\u529f\u80fd\uff0c\u6211\u4e0d\u4f1a\u611f\u5230\u60ca\u8bb6<\/p>\n
 <\/p>\n
\u6b63\u786e\u7b54\u6848<\/h2>\n
 <\/p>\n
\u5728\u5355\u4e2a\u8bed\u53e5\u4e2d\u58f0\u660e\u53d8\u91cf\u53ca\u5176\u6570\u636e\u7c7b\u578b<\/p>\n
\u4e0d\u53ef\u80fd<\/p>\n
 \u4e0b\u8bed\u8a00\u89c4\u8303\u7684\u652f\u6301\u6761\u6b3e<\/p>\n
\u5982\u679c\u5b58\u5728\u7c7b\u578b\uff0c\u5219\u6bcf\u4e2a\u53d8\u91cf\u90fd\u4f1a\u88ab\u8d4b\u4e88\u8be5\u7c7b\u578b\u3002\u5426\u5219\uff0c\u6bcf\u4e2a\u53d8\u91cf\u90fd\u4f1a\u5728\u8d4b\u503c\u4e2d\u88ab\u8d4b\u4e88\u76f8\u5e94\u521d\u59cb\u5316\u503c\u7684\u7c7b\u578b\u3002\u5982\u679c\u8be5\u503c\u662f\u65e0\u7c7b\u578b\u5e38\u91cf\uff0c\u5219\u9996\u5148\u5c06\u5176\u9690\u5f0f\u8f6c\u6362\u4e3a\u5176\u9ed8\u8ba4\u7c7b\u578b\uff1b<\/p>\n
\u6240\u4ee5\u50cf\u4e0b\u9762\u8fd9\u6837\u7684\u4e1c\u897f\u53ef\u4ee5\u901a\u8fc7\u4e0d\u6307\u5b9a\u4efb\u4f55\u4e00\u79cd\u7c7b\u578b\u6765\u5de5\u4f5c\uff0c\u4f46\u662f\u60a8\u5f88\u597d\u5730\u53ef\u4ee5\u4f7f\u7528 :=<\/code> \u6765\u4f7f\u7528\u77ed\u53d8\u91cf\u58f0\u660e<\/p>\n
var message, error = greetings.hello()\n<\/pre>\n
\u4f46\u662f\u60a8\u53ef\u4ee5\u4f7f\u7528\u53d8\u91cf\u7684\u7c7b\u578b\u4fe1\u606f\u663e\u5f0f\u58f0\u660e\u53d8\u91cf\u5e76\u4f7f\u7528 =<\/code> \u8d4b\u503c\u3002<\/p>\n
var message string\nvar err error\n\nif message, err = greetings.Hello(\"\"); err != nil {\n    log.Fatal(err)\n}\n<\/pre>\n
\u4eca\u5929\u5173\u4e8e\u300a\u5982\u4f55\u5728Go\u4e2d\u7684\u5355\u4e2a\u8bed\u53e5\u4e2d\u58f0\u660e\u4e0d\u540c\u6570\u636e\u7c7b\u578b\u7684\u53d8\u91cf\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u5185\u5bb9\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-207187","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207187","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=207187"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207187\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207187"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207187"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207187"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}