{"id":207640,"date":"2025-07-08T09:16:53","date_gmt":"2025-07-08T01:16:53","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207640\/"},"modified":"2025-07-08T09:16:53","modified_gmt":"2025-07-08T01:16:53","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8-go-%e4%b8%ad%e4%bd%bf%e7%94%a8%e8%bf%87%e6%bb%a4%e5%99%a8%e5%8f%82%e6%95%b0%e8%bf%87%e6%bb%a4%e7%bb%93%e6%9e%84%e4%bd%93%e5%88%87%e7%89%87","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207640\/","title":{"rendered":"\u5982\u4f55\u5728 GO \u4e2d\u4f7f\u7528\u8fc7\u6ee4\u5668\u53c2\u6570\u8fc7\u6ee4\u7ed3\u6784\u4f53\u5207\u7247"},"content":{"rendered":"

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

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u5982\u4f55\u5728 GO \u4e2d\u4f7f\u7528\u8fc7\u6ee4\u5668\u53c2\u6570\u8fc7\u6ee4\u7ed3\u6784\u4f53\u5207\u7247<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-24 10:39:34<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u5b66\u4e60\u77e5\u8bc6\u8981\u5584\u4e8e\u601d\u8003\uff0c\u601d\u8003\uff0c\u518d\u601d\u8003\uff01\u4eca\u5929\u5c0f\u7f16\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765\u300a\u5982\u4f55\u5728 GO \u4e2d\u4f7f\u7528\u8fc7\u6ee4\u5668\u53c2\u6570\u8fc7\u6ee4\u7ed3\u6784\u4f53\u5207\u7247\u300b<\/span>\uff0c\u4ee5\u4e0b\u5185\u5bb9\u4e3b\u8981\u5305\u542b<\/span>\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\u6216\u51c6\u5907\u5b66\u4e60Golang<\/span>\uff0c\u5c31\u90fd\u4e0d\u8981\u9519\u8fc7\u672c\u6587\u5566~\u8ba9\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff0c\u80fd\u5e2e\u52a9\u5230\u4f60\u5c31\u66f4\u597d\u4e86\uff01<\/span><\/p>\n

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

\u6211\u662f golang \u7684\u65b0\u624b\uff0c\u6211\u5c1d\u8bd5\u4f7f\u7528\u5305\u542b\u4e00\u4e9b\u8fc7\u6ee4\u53c2\u6570\u7684\u7ed3\u6784\u6765\u8fc7\u6ee4 go \u4e2d\u7684\u7ed3\u6784\u5207\u7247\u3002\u6211\u6b63\u5728\u5c1d\u8bd5\u505a\u4ee5\u4e0b\u4e8b\u60c5\uff0c\u4f46\u5b83\u5bf9\u6211\u4e0d\u8d77\u4f5c\u7528\u3002\u5728\u8be5\u4ee3\u7801\u4e2d\uff0c\u6211\u6709\u4e00\u4e2a\u8fc7\u6ee4\u5668\u51fd\u6570\uff0c\u5b83\u91c7\u7528\u7ed3\u6784\u4f53\u5207\u7247\uff0c\u5373\u9700\u8981\u4f7f\u7528 filterparameter \u7ed3\u6784\u4f53\u8fdb\u884c\u8fc7\u6ee4\u7684 grn\u3002<\/p>\n

\u6211\u7684\u7ed3\u6784\u9700\u8981\u5f52\u6863<\/p>\n

type grn struct {\n        doctype          string    `json:\"doctype\"`\n        grnno            string    `json:\"grnno\"`\n        prid             string    `json:\"prid\"`\n        produce          string    `json:\"produce\"`\n        variety          string    `json:\"variety\"`\n}\n\n\nmanygrnusers := []grn{{\"grnasset\",\"grn0000109\",\"prfainapkr0086\",\"sweetcorn\",\"cp2\"},\n    {\"grnasset\",\"grn0000110\",\"prfainapkr0087\",\"sweetcorn\",\"cp1\",},\n    {\"grnasset\",\"grn0000112\",\"prfainapkr0087\", \"sweetcorn\",\"cp2\",},\n    {\"grnasset\",\"grn0000113\",\"prfainapkr0089\",\"apple\",\"gala\",}}<\/pre>\n
\u5c06\u7528\u4e8e\u8fc7\u6ee4\u5668\u53c2\u6570\u7684\u7ed3\u6784\u3002\u8fd9\u91cc\uff0cfilterparameter \u4e2d\u7684\u5b57\u6bb5\u662f\u52a8\u6001\u7684\uff0c\u5982\u4e0a\u9762\u7684 grn \u7ed3\u6784\u503c\u3002\u5b83\u53ef\u4ee5\u8d85\u8fc7\u4e24\u4e2a\u5b57\u6bb5\uff0c\u4f46\u5c0f\u4e8e\u6216\u7b49\u4e8e grn \u7ed3\u6784\u5b57\u6bb5<\/p>\n
type filterparameter struct {\n        produce            string    `json:\"produce\"`\n        variety          string    `json:\"variety\"`\n    \n    }\n\nmanyfilterparameter := []filterparameter{{\"sweetcorn\",\"cp2\" }<\/pre>\n
\u6211\u5c1d\u8bd5\u4e86\u4e0b\u9762\u7684\u51fd\u6570\uff0c\u4f46\u5b83\u5bf9\u6211\u4e0d\u8d77\u4f5c\u7528\uff0c\u56e0\u4e3a\u6211\u53ea\u80fd\u4f7f\u7528 filterparameter \u4e2d\u7684\u4e00\u4e2a\u5b57\u6bb5\uff0c\u5373\u4ec5 produce \u5e76\u4e14\u5b83\u4e0d\u662f\u52a8\u6001\u7684<\/p>\n
func filter(fu []GRN, su []FilterParameter) (out []GRN) {\n        f := make(map[string]struct{}, len(su))\n        for _, u := range su {\n            f[u.PRODUCE] = struct{}{}\n        }\n        for _, u := range fu {\n            if _, ok := f[u.PRODUCE]; ok {\n                out = append(out, u)\n            }\n        }\n        return\n    }<\/pre>\n
 <\/p>\n
\u6b63\u786e\u7b54\u6848<\/h2>\n
 <\/p>\n
\u60a8\u65e0\u6cd5\u771f\u6b63\u6267\u884c\u60a8\u60f3\u8981\u6267\u884c\u7684\u64cd\u4f5c\uff0c\u56e0\u4e3a\u4e0d\u53ef\u80fd\u8fed\u4ee3 struct<\/code> \u7684\u5b57\u6bb5\uff08\u53ef\u80fd\u901a\u8fc7\u53cd\u5c04\uff09\u3002\u5bf9\u4e8e\u53e6\u4e00\u79cd\u65b9\u6cd5\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 map<\/code>s \u800c\u4e0d\u662f struct<\/code>s\uff0c\u6216\u8005\u5982\u679c\u60a8\u53ef\u4ee5\u5728\u51fd\u6570\u53c2\u6570\u4e2d\u663e\u5f0f\u4f7f\u7528\u60a8\u5173\u5fc3\u7684\u5b57\u6bb5\uff0c\u5219\u751a\u81f3\u66f4\u5bb9\u6613\uff1a<\/p>\n
package main\nimport \"fmt\"\ntype GRN struct { DocType, GRNNO, PRID, PRODUCE, VARIETY string }\n\nfunc filter(in []GRN, produce, variety string) []GRN {\n   var out []GRN\n   for _, each := range in {\n      if each.PRODUCE == produce && each.VARIETY == variety {\n         out = append(out, each)\n      }\n   }\n   return out\n}\n\nfunc main() {\n   manyGRNUsers := []GRN{\n      {\"GRNAsset\",\"GRN0000109\",\"PRFAINAPKR0086\",\"Sweetcorn\",\"CP2\"},\n      {\"GRNAsset\",\"GRN0000110\",\"PRFAINAPKR0087\",\"Sweetcorn\",\"CP1\"},\n      {\"GRNAsset\",\"GRN0000112\",\"PRFAINAPKR0087\", \"Sweetcorn\",\"CP2\"},\n      {\"GRNAsset\",\"GRN0000113\",\"PRFAINAPKR0089\",\"Apple\",\"Gala\"},\n   }\n   out := filter(manyGRNUsers, \"Sweetcorn\", \"CP2\")\n   fmt.Println(out)\n}<\/pre>\n
\u672c\u7bc7\u5173\u4e8e\u300a\u5982\u4f55\u5728 GO \u4e2d\u4f7f\u7528\u8fc7\u6ee4\u5668\u53c2\u6570\u8fc7\u6ee4\u7ed3\u6784\u4f53\u5207\u7247\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-207640","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207640","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=207640"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207640\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207640"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207640"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207640"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}