{"id":208280,"date":"2025-07-08T11:53:11","date_gmt":"2025-07-08T03:53:11","guid":{"rendered":"https:\/\/server.hk\/cnblog\/208280\/"},"modified":"2025-07-08T11:53:11","modified_gmt":"2025-07-08T03:53:11","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8-go-%e4%b8%ad%e6%89%93%e5%8d%b0%e6%8c%87%e9%92%88%e5%88%87%e7%89%87%e4%bb%a5%e8%8e%b7%e5%8f%96%e5%80%bc%e8%80%8c%e4%b8%8d%e6%98%af%e5%9c%b0%e5%9d%80%e8%80%8c%e4%b8%8d","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/208280\/","title":{"rendered":"\u5982\u4f55\u5728 go \u4e2d\u6253\u5370\u6307\u9488\u5207\u7247\u4ee5\u83b7\u53d6\u503c\u800c\u4e0d\u662f\u5730\u5740\u800c\u4e0d\u8fdb\u884c\u8fed\u4ee3\uff1f"},"content":{"rendered":"

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

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u5982\u4f55\u5728 go \u4e2d\u6253\u5370\u6307\u9488\u5207\u7247\u4ee5\u83b7\u53d6\u503c\u800c\u4e0d\u662f\u5730\u5740\u800c\u4e0d\u8fdb\u884c\u8fed\u4ee3\uff1f<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-05-01 10:45:34<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\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\u300a\u5982\u4f55\u5728 go \u4e2d\u6253\u5370\u6307\u9488\u5207\u7247\u4ee5\u83b7\u53d6\u503c\u800c\u4e0d\u662f\u5730\u5740\u800c\u4e0d\u8fdb\u884c\u8fed\u4ee3\uff1f\u300b<\/span>\uff0c\u672c\u6587\u4e3b\u8981\u4f1a\u8bb2\u5230<\/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

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

\u8fd9\u79cd\u8f93\u51fa\u9700\u8981\u7528\u4e8e\u8c03\u8bd5\u76ee\u7684\u3002 \u4e3a\u4e86\u83b7\u5f97\u6307\u9488\u5207\u7247\u7684\u5b9e\u9645\u503c\uff0c\u6bcf\u6b21\u9700\u8981\u8fed\u4ee3\u65f6\u3002<\/p>\n

\u6709\u6ca1\u6709\u4ec0\u4e48\u529e\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u7b80\u5355\u7684 fmt.printf() \u76f4\u63a5\u83b7\u53d6\u5207\u7247\u4e2d\u5b58\u5728\u7684\u6bcf\u4e2a\u9879\u76ee\u7684\u503c\u800c\u4e0d\u662f\u5730\u5740\uff1f<\/p>\n

\u8fd9\u662f\u4e00\u4e2a\u4ee3\u7801\u7247\u6bb5\uff1a https:\/\/play.golang.org\/p\/bq5vwtlkzmv<\/p>\n

package main\n\nimport (\n    \"fmt\"\n)\n\ntype user struct {\n    userID int\n    name   string\n    email  string\n}\n\nfunc main() {\n    var users []*user\n    addUsers(users)\n}\n\nfunc addUsers(users []*user) {\n    users = append(users, &user{userID: 1, name: \"cooluser1\", email: \"[email protected]\"})\n    users = append(users, &user{userID: 2, name: \"cooluser2\", email: \"[email protected]\"})\n    printUsers(users)\n    printEachUser(users)\n\n}\n\nfunc printUsers(users []*user) {\n    fmt.Printf(\"users at slice %v \\n\", users)\n}\n\nfunc printEachUser(users []*user) {\n    for index, u := range users {\n        fmt.Printf(\"user at user[%d] is : %v \\n\", index, *u)\n    }\n}\n<\/pre>\n
\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u5982\u679c\u6211\u76f4\u63a5\u901a\u8fc7 fmt.printf \u6253\u5370\u5207\u7247\uff0c\u6211\u53ea\u80fd\u5f97\u5230\u503c\u7684\u5730\u5740\uff0c\u800c\u4e0d\u662f\u5b9e\u9645\u503c\u672c\u8eab\u3002<\/p>\n
\u8f93\u51fa\uff1a\u5207\u7247 [0x442260 0x442280] \u5904\u7684 users<\/p> <p>\u8981\u59cb\u7ec8\u8bfb\u53d6\u503c\uff0c\u6211\u5fc5\u987b\u50cf printeachuser<\/code> \u4e00\u6837\u8c03\u7528 func<\/code> \u6765\u8fed\u4ee3\u5207\u7247\u5e76\u83b7\u53d6\u9002\u5f53\u7684\u503c\u3002<\/code><\/p>\n
\u8f93\u51fa\uff1a \u7528\u6237 [0] \u7684 user \u662f\uff1a{1 cooluser1 [\u7535\u5b50\u90ae\u4ef6\u53d7\u4fdd\u62a4]}<\/code> \u7528\u6237 [1] \u7684 user \u662f\uff1a{2 cooluser2 [\u7535\u5b50\u90ae\u4ef6\u53d7\u4fdd\u62a4]}<\/code><\/p>\n
\u6709\u4ec0\u4e48\u529e\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 fmt.printf<\/code> \u8bfb\u53d6\u6307\u9488\u5207\u7247\u5185\u7684\u503c\u5e76\u76f4\u63a5\u83b7\u53d6\u503c\uff0c\u5982\u4e0b\u6240\u793a\uff1f<\/p>\n
users \u4f4d\u4e8e\u5207\u7247 [&{1cooluser1 [\u7535\u5b50\u90ae\u4ef6\u53d7\u4fdd\u62a4]}\u3001&{2cooluser2 [\u7535\u5b50\u90ae\u4ef6\u53d7\u4fdd\u62a4]}]<\/code><\/p>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u8fd9\u79cd\u8f93\u51fa\u9700\u8981\u7528\u4e8e\u8c03\u8bd5\u76ee\u7684\u3002<\/p>\n
\u6709\u4ec0\u4e48\u529e\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u8bfb\u53d6\u6307\u9488\u5207\u7247\u5185\u7684\u503c \u4f7f\u7528 fmt.printf<\/code> \u5e76\u76f4\u63a5\u83b7\u53d6\u503c\uff0c\u5982\u4e0b\u6240\u793a\uff1f<\/p>\n
users []*user\nfmt.printf(\"users at slice %v \\n\", users)\n\nusers at slice [&{1 cooluser1 }, &{2 cooluser2 }]<\/pre>\n<\/p>\n
\u5bfc\u5165\u201cfmt\u201d<\/code><\/p>\n<\/p>\n
stringer \u7531\u4efb\u4f55\u5177\u6709 string \u65b9\u6cd5\u7684\u503c\u5b9e\u73b0\uff0c\u8be5\u65b9\u6cd5 \u5b9a\u4e49\u8be5\u503c\u7684\u201c\u672c\u673a\u201d\u683c\u5f0f\u3002\u4f7f\u7528 string \u65b9\u6cd5 \u5c06\u4f5c\u4e3a\u64cd\u4f5c\u6570\u4f20\u9012\u7684\u503c\u6253\u5370\u4e3a\u63a5\u53d7\u7684\u4efb\u4f55\u683c\u5f0f \u5b57\u7b26\u4e32\u6216\u672a\u683c\u5f0f\u5316\u7684\u6253\u5370\u673a\uff0c\u4f8b\u5982 print\u3002<\/p>\n
type stringer interface {\n        string() string\n}<\/pre>\n
\u4f8b\u5982\uff0c<\/p>\n
package main\n\nimport (\n    \"fmt\"\n)\n\ntype user struct {\n    userid int\n    name   string\n    email  string\n}\n\ntype users []*user\n\nfunc (users users) string() string {\n    s := \"[\"\n    for i, user := range users {\n        if i > 0 {\n            s += \", \"\n        }\n        s += fmt.sprintf(\"%v\", user)\n    }\n    return s + \"]\"\n}\n\nfunc addusers(users users) {\n    users = append(users, &user{userid: 1, name: \"cooluser1\", email: \"\"})\n    users = append(users, &user{userid: 2, name: \"cooluser2\", email: \"\"})\n\n    fmt.printf(\"users at slice %v \\n\", users)\n}\n\nfunc main() {\n    var users users\n    addusers(users)\n}<\/pre>\n
\u6f14\u793a\uff1a<\/p>\n
\u8f93\u51fa\uff1a<\/p>\n
users at slice [&{1 cooluser1 }, &{2 cooluser2 }]<\/pre>\n
\u4ee3\u7801\uff1a<\/p>\n
\u8f93\u51fa\uff1a<\/p>\n
\u4f7f\u7528\u7eb5\u6881\u53ef\u4ee5\u5b9e\u73b0\u5b83\u3002<\/p>\n
\u53c2\u8003\uff1a<\/p>\n
package main\n\nimport (\n    \"fmt\"\n)\n\ntype user struct {\n    userID int\n    name   string\n    email  string\n}\n\nfunc (t user) String() string {\n    return fmt.Sprintf(\"{%v %v %v}\", t.userID, t.name, t.email)\n}\n\nfunc main() {\n    var users []*user\n    addUsers(users)\n}\n\nfunc addUsers(users []*user) {\n    users = append(users, &user{userID: 1, name: \"cooluser1\", email: \"\"})\n    users = append(users, &user{userID: 2, name: \"cooluser2\", email: \"\"})\n    printUsers(users)\n}\n\nfunc printUsers(users []*user) {\n    fmt.Printf(\"users at slice %v \\n\", users)\n}<\/pre>\n
\u60a8\u4e0d\u9700\u8981\u5c06 stringer \u5e94\u7528\u4e8e\u7528\u6237\uff0c\u5373 []*users\uff0c\u76f8\u53cd\uff0c\u5982\u679c\u60a8\u53ea\u4e3a\u5355\u4e2a\u7528\u6237\u6267\u884c\u6b64\u64cd\u4f5c\uff0c\u90a3\u4e48\u5b83\u4f1a\u6b63\u5e38\u5de5\u4f5c\u3002\u5b83\u8fd8\u51cf\u5c11\u4e86\u60a8\u9700\u8981\u624b\u52a8\u6267\u884c\u7684\u5b57\u7b26\u4e32\u64cd\u4f5c\uff0c\u4f7f\u4ee3\u7801\u53d8\u5f97\u4f18\u96c5\u3002<\/strong><\/p>\n
\u672c\u7bc7\u5173\u4e8e\u300a\u5982\u4f55\u5728 go \u4e2d\u6253\u5370\u6307\u9488\u5207\u7247\u4ee5\u83b7\u53d6\u503c\u800c\u4e0d\u662f\u5730\u5740\u800c\u4e0d\u8fdb\u884c\u8fed\u4ee3\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-208280","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208280","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=208280"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208280\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=208280"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=208280"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=208280"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}