{"id":207347,"date":"2025-07-08T09:55:14","date_gmt":"2025-07-08T01:55:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207347\/"},"modified":"2025-07-08T09:55:14","modified_gmt":"2025-07-08T01:55:14","slug":"%e5%a6%82%e4%bd%95%e9%9a%90%e8%97%8fgolang%e4%b8%ad%e7%9a%84%e9%bb%98%e8%ae%a4%e7%b1%bb%e5%9e%8b%e6%9e%84%e9%80%a0%e5%87%bd%e6%95%b0%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207347\/","title":{"rendered":"\u5982\u4f55\u9690\u85cfgolang\u4e2d\u7684\u9ed8\u8ba4\u7c7b\u578b\u6784\u9020\u51fd\u6570\uff1f"},"content":{"rendered":"

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

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u5982\u4f55\u9690\u85cfgolang\u4e2d\u7684\u9ed8\u8ba4\u7c7b\u578b\u6784\u9020\u51fd\u6570\uff1f<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-21 21:00:34<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

IT\u884c\u4e1a\u76f8\u5bf9\u4e8e\u4e00\u822c\u4f20\u7edf\u884c\u4e1a\uff0c\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u66f4\u5feb\uff0c\u4e00\u65e6\u505c\u6b62\u4e86\u5b66\u4e60\uff0c\u5f88\u5feb\u5c31\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u6240\u4ee5\u6211\u4eec\u9700\u8981\u8e0f\u8e0f\u5b9e\u5b9e\u7684\u4e0d\u65ad\u5b66\u4e60\uff0c\u7cbe\u8fdb\u81ea\u5df1\u7684\u6280\u672f\uff0c\u5c24\u5176\u662f\u521d\u5b66\u8005\u3002\u4eca\u5929\u7ed9\u5927\u5bb6\u6574\u7406\u4e86\u300a\u5982\u4f55\u9690\u85cfgolang\u4e2d\u7684\u9ed8\u8ba4\u7c7b\u578b\u6784\u9020\u51fd\u6570\uff1f\u300b\uff0c\u804a\u804a\uff0c\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n

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

\u6211\u6709\u8fd9\u4e2a\u95ee\u9898\u7684\u539f\u56e0\u662f\u6211\u7ecf\u5e38\u72af\u9519\u8bef\uff0c\u5fd8\u8bb0\u4e3a\u7ed3\u6784\u4f53\u7684\u5b57\u6bb5\u6307\u5b9a\u4e00\u4e2a\u503c\uff0c\u90a3\u4e48\u7f16\u8bd1\u5668\u6ca1\u95ee\u9898\uff0c\u4f46\u96f6\u503c\u4f1a\u5bfc\u81f4\u9519\u8bef\u3002<\/p>\n

\u8fd9\u662f\u4e00\u4e2a\u4f8b\u5b50\u3002\u5047\u8bbe\u6211\u5728\u5305\u4e2d\u5b9a\u4e49\u4e86\u4e00\u4e2a foo<\/code> \u7c7b\u578b\uff1a<\/p>\n

package types\n\ntype foo struct {\n  requiredfield1 string\n  requiredfield2 string\n}<\/pre>\n
\u5b83\u662f\u516c\u5f00\u7684\uff0c\u5e76\u4e14\u6709 2 \u4e2a\u5b57\u6bb5\uff0c\u6211\u5e0c\u671b\u5728\u521b\u5efa foo<\/code> \u7ed3\u6784\u65f6\u6307\u5b9a\u8fd9\u4e24\u4e2a\u5b57\u6bb5\u3002<\/p>\n
\u7136\u540e\u6211\u53ef\u4ee5\u5728\u6211\u7684\u4e3b\u51fd\u6570\u4e2d\u5bfc\u5165\u5e76\u4f7f\u7528\u5b83\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
package main\n\nimport (\n  \"github.com\/foo\/bar\/types\"\n)\n\nfunc main() {\n  f := &foo{ \n    requiredfield1: \"fff\",\n  }\n  fmt.printf(\"f.requiredfield2: %v\", f.requiredfield2)\n}<\/pre>\n
\u8fd9\u4f1a\u5bfc\u81f4\u9519\u8bef\uff0c\u56e0\u4e3a\u6211\u5fd8\u8bb0\u6307\u5b9a\u5fc5\u9700\u7684 requiredfield2<\/code> \u3002\u6211\u7ecf\u5e38\u72af\u8fd9\u79cd\u9519\u8bef:p<\/p>\n
\u73b0\u5728\uff0c\u4e3a\u4e86\u5229\u7528\u7f16\u8bd1\u5e76\u9632\u6b62\u6b64\u9519\u8bef\uff0c\u6211\u4e3a foo<\/code> \u521b\u5efa\u4e86\u4e00\u4e2a\u6784\u9020\u51fd\u6570\uff0c\u5e76\u8981\u6c42\u63d0\u4f9b\u6240\u9700\u7684\u503c\u3002 <\/p>\n
func newfoo(field1 string, field2 string) *foo {\n  return &foo{field1: field1, field2: field2}\n}<\/pre>\n
\u8fd9\u6837\uff0c\u5982\u679c\u6211\u5fd8\u8bb0\u4f20\u9012 field2<\/code>\uff0c\u7f16\u8bd1\u5668\u5c06\u4e0d\u4f1a\u7f16\u8bd1\u6211\u7684\u4ee3\u7801\uff1a<\/p>\n
func main() {\n    f := newfoo(\"foo\")\n    fmt.printf(\"f.field2: %v\", f.field2)\n}<\/pre>\n
\u6784\u5efa\u5c06\u5931\u8d25\uff1a<\/p>\n
.\/prog.go:18:13: not enough arguments in call to NewFoo\n    have (string)\n    want (string, string)<\/pre>\n
\u73b0\u5728\u7684\u95ee\u9898\u662f\uff1a\u5982\u4f55\u963b\u6b62\u5916\u90e8\u8c03\u7528\u8005\uff08\u6765\u81ea\u5176\u4ed6\u547d\u540d\u7a7a\u95f4\u7684\u8c03\u7528\u8005\uff09\u8c03\u7528foo<\/code>\u7684\u9ed8\u8ba4\u6784\u9020\u51fd\u6570\uff0c\u5373&foo<\/code>\uff0c\u5e76\u5f3a\u5236\u4ed6\u4eec\u4f7f\u7528newfoo<\/code>\uff1f <\/p>\n
\u5982\u679c\u53ef\u4ee5\uff0c\u90a3\u4e48\u6211\u5c31\u5b89\u5168\u4e86\uff0c\u56e0\u4e3a newfoo \u662f\u521b\u5efa foo<\/code> \u7c7b\u578b\u7684\u552f\u4e00\u65b9\u6cd5\uff0c\u5e76\u4e14\u7f16\u8bd1\u5668\u5e2e\u52a9\u6211\u786e\u4fdd\u8c03\u7528\u5b83\u65f6\u6240\u6709\u5b57\u6bb5\u90fd\u5b58\u5728\u3002<\/p>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u60a8\u53ef\u4ee5\u901a\u8fc7\u4e0d\u5bfc\u51fa foo \u7c7b\u578b\u6765\u907f\u514d\u6b64\u95ee\u9898\u3002<\/p>\n
\u60a8\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u5bfc\u51fa\u7684\u63a5\u53e3\uff0c\u5e76\u5177\u6709 foo \u7c7b\u578b\u6267\u884c\u7684\u6240\u6709\u65b9\u6cd5\u3002<\/p>\n
\u793a\u4f8b\uff1a-<\/p>\n
type Foo interface{\nDoSomething()\n}\n\ntype foo struct{\nRequiredField1 string\nRequiredField2 string\n}\n\nfunc NewFoo(requiredField1 string,requiredField2 string)*foo{\nreturn &foo{\nRequiredField1:requiredField1,\nRequiredField2:requiredField2,\n}\n}\n\nfunc (f *foo)DoSomething(){\n\/\/ your implementation\n}<\/pre>\n
\u8fd9\u6837\uff0c\u6240\u6709\u8c03\u7528\u8005\u90fd\u53ef\u4ee5\u8bbf\u95ee\u5b83\uff0c\u4f46\u5982\u679c\u6ca1\u6709 newfoo \u51fd\u6570\uff0c\u5c31\u65e0\u6cd5\u521b\u5efa foo\u3002<\/p>\n
\u60a8\u4e0d\u80fd<\/strong>\u5bfc\u51fa\u7c7b\u578b\u3002<\/p>\n
\u4e60\u60ef\u5c31\u597d\uff0c\u73b0\u5b9e\u751f\u6d3b\u4e2d\u8fd9\u4e0d\u662f\u95ee\u9898\u3002<\/p>\n
\uff08\u5bf9\u4e8e\u672a\u5bfc\u51fa\u7684\u7c7b\u578b\uff0c\u53ea\u9700\u63d0\u4f9b func newunexportedtype(...) unexportedtype<\/code>\u3002\uff09<\/p>\n
\u6587\u4e2d\u5173\u4e8e\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300a\u5982\u4f55\u9690\u85cfgolang\u4e2d\u7684\u9ed8\u8ba4\u7c7b\u578b\u6784\u9020\u51fd\u6570\uff1f\u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002<\/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-207347","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207347","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=207347"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207347\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207347"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207347"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207347"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}