{"id":205800,"date":"2025-06-12T12:08:03","date_gmt":"2025-06-12T04:08:03","guid":{"rendered":"https:\/\/server.hk\/cnblog\/205800\/"},"modified":"2025-06-12T12:08:03","modified_gmt":"2025-06-12T04:08:03","slug":"golang-%e5%87%bd%e6%95%b0%e9%93%be%e5%9c%a8%e4%b8%8d%e5%90%8c%e9%a2%86%e5%9f%9f%e7%9a%84%e5%ae%9e%e9%99%85%e5%ba%94%e7%94%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/205800\/","title":{"rendered":"Golang \u51fd\u6570\u94fe\u5728\u4e0d\u540c\u9886\u57df\u7684\u5b9e\u9645\u5e94\u7528"},"content":{"rendered":"

\u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u6211\u4eec\u8981\u52aa\u529b\u5b66\u4e60\u5566\uff01\u4eca\u5929\u6211\u7ed9\u5927\u5bb6\u5e26\u6765
\n\u300aGOLANG \u51fd\u6570\u94fe\u5728\u4e0d\u540c\u9886\u57df\u7684\u5b9e\u9645\u5e94\u7528\u300b<\/span>\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u8bf7\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427\uff01\u4e0b\u6587\u4e2d\u7684\u5185\u5bb9\u6211\u4eec\u4e3b\u8981\u4f1a\u6d89\u53ca\u5230
\n<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u5728\u9605\u8bfb\u672c\u6587\u8fc7\u7a0b\u4e2d\u6709\u9047\u5230\u4e0d\u6e05\u695a\u7684\u5730\u65b9\uff0c\u6b22\u8fce\u7559\u8a00\u5440\uff01\u6211\u4eec\u4e00\u8d77\u8ba8\u8bba\uff0c\u4e00\u8d77\u5b66\u4e60\uff01,\u51fd\u6570\u94fe\u662f\u4e00\u79cd\u5c06\u51fd\u6570\u8f93\u51fa\u4f5c\u4e3a\u8f93\u5165\u4f20\u9012\uff0c\u5f62\u6210\u4e32\u884c\u8c03\u7528\u7684\u6a21\u5f0f\u3002\u5b83\u5728\u4e0d\u540c\u9886\u57df\u6709\u5e7f\u6cdb\u5e94\u7528\uff0c\u4f8b\u5982\u6570\u636e\u5904\u7406\u548c\u56fe\u50cf\u5904\u7406\u3002\u5b9e\u6218\u6848\u4f8b\u5305\u62ec\uff1a – \u6570\u636e\u5904\u7406\uff1a\u8bfb\u53d6\u6570\u636e\u3001\u8fc7\u6ee4\u3001\u8ba1\u7b97\u3001\u6392\u5e8f – \u56fe\u50cf\u5904\u7406\uff1a\u8c03\u6574\u4eae\u5ea6\u3001\u9510\u5316\u3001\u88c1\u526a,
\n,
\nGo \u51fd\u6570\u94fe\u5728\u4e0d\u540c\u9886\u57df\u7684\u5b9e\u9645\u5e94\u7528<\/strong>,\u51fd\u6570\u94fe\u662f\u6307\u5728 Go \u4e2d\u5c06\u4e00\u4e2a\u51fd\u6570\u7684\u8f93\u51fa\u4f5c\u4e3a\u53e6\u4e00\u4e2a\u51fd\u6570\u7684\u8f93\u5165\uff0c\u5f62\u6210\u4e00\u7cfb\u5217\u4e32\u884c\u8c03\u7528\u7684\u6a21\u5f0f\u3002\u5b83\u662f\u4e00\u79cd\u5f3a\u5927\u7684\u7f16\u7a0b\u6280\u672f\uff0c\u53ef\u4ee5\u7b80\u5316\u590d\u6742\u4ee3\u7801\u5e76\u63d0\u9ad8\u53ef\u8bfb\u6027\u3002,
\n\u5b9e\u6218\u6848\u4f8b\uff1a\u6570\u636e\u5904\u7406<\/strong>,\u51fd\u6570\u94fe\u5728\u6570\u636e\u5904\u7406\u4e2d\u975e\u5e38\u6709\u7528\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u6709\u4e00\u4e2a\u5305\u542b\u9500\u552e\u6570\u636e\u7684 CSV \u6587\u4ef6\uff0c\u9700\u8981\u5bf9\u5176\u8fdb\u884c\u5982\u4e0b\u64cd\u4f5c\uff1a,\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u51fd\u6570\u94fe\u6765\u5b9e\u73b0\u6b64\u64cd\u4f5c\uff1a,
\n\u5b9e\u6218\u6848\u4f8b\uff1a\u56fe\u50cf\u5904\u7406<\/strong>,\u51fd\u6570\u94fe\u5728\u56fe\u50cf\u5904\u7406\u4e2d\u4e5f\u5f88\u6709\u7528\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u6709\u4e00\u5f20\u56fe\u7247\uff0c\u9700\u8981\u5bf9\u5176\u8fdb\u884c\u5982\u4e0b\u64cd\u4f5c\uff1a,\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u51fd\u6570\u94fe\u6765\u5b9e\u73b0\u6b64\u64cd\u4f5c\uff1a,
\n\u7ed3\u8bba<\/strong>,\u51fd\u6570\u94fe\u662f Go \u4e2d\u4e00\u79cd\u529f\u80fd\u5f3a\u5927\u4e14\u7075\u6d3b\u7684\u7f16\u7a0b\u6280\u672f\uff0c\u53ef\u5728\u4e0d\u540c\u9886\u57df\u63d0\u4f9b\u4e30\u5bcc\u7684\u5e94\u7528\u3002\u901a\u8fc7\u5c06\u51fd\u6570\u4e32\u8054\u8d77\u6765\uff0c\u4f60\u53ef\u4ee5\u7b80\u5316\u590d\u6742\u4ee3\u7801\uff0c\u63d0\u9ad8\u53ef\u8bfb\u6027\uff0c\u5e76\u5199\u51fa\u66f4\u7b80\u6d01\u53ef\u7ef4\u62a4\u7684\u7a0b\u5e8f\u3002,\u672c\u7bc7\u5173\u4e8e\u300aGOLANG \u51fd\u6570\u94fe\u5728\u4e0d\u540c\u9886\u57df\u7684\u5b9e\u9645\u5e94\u7528\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\u6ce8GOLANG\u516c\u4f17\u53f7\uff01,\u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u6211\u4eec\u8981\u52aa\u529b\u5b66\u4e60\u5566\uff01\u4eca\u5929\u6211\u7ed9\u5927\u5bb6\u5e26\u6765
\n\u300aGOLANG \u51fd\u6570\u94fe\u5728\u4e0d\u540c\u9886\u57df\u7684\u5b9e\u9645\u5e94\u7528\u300b<\/span>\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u8bf7\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427\uff01\u4e0b\u6587\u4e2d\u7684\u5185\u5bb9\u6211\u4eec\u4e3b\u8981\u4f1a\u6d89\u53ca\u5230
\n<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u5728\u9605\u8bfb\u672c\u6587\u8fc7\u7a0b\u4e2d\u6709\u9047\u5230\u4e0d\u6e05\u695a\u7684\u5730\u65b9\uff0c\u6b22\u8fce\u7559\u8a00\u5440\uff01\u6211\u4eec\u4e00\u8d77\u8ba8\u8bba\uff0c\u4e00\u8d77\u5b66\u4e60\uff01,
\n<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> GOLANG \u51fd\u6570\u94fe\u5728\u4e0d\u540c\u9886\u57df\u7684\u5b9e\u9645\u5e94\u7528<\/span><\/p>\n

GOLANG \u51fd\u6570\u94fe\u5728\u4e0d\u540c\u9886\u57df\u7684\u5b9e\u9645\u5e94\u7528<\/h1>\n

2024-10-27 12:31:00<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u6211\u4eec\u8981\u52aa\u529b\u5b66\u4e60\u5566\uff01\u4eca\u5929\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\u300aGOLANG \u51fd\u6570\u94fe\u5728\u4e0d\u540c\u9886\u57df\u7684\u5b9e\u9645\u5e94\u7528\u300b<\/span>\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u8bf7\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427\uff01\u4e0b\u6587\u4e2d\u7684\u5185\u5bb9\u6211\u4eec\u4e3b\u8981\u4f1a\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u5728\u9605\u8bfb\u672c\u6587\u8fc7\u7a0b\u4e2d\u6709\u9047\u5230\u4e0d\u6e05\u695a\u7684\u5730\u65b9\uff0c\u6b22\u8fce\u7559\u8a00\u5440\uff01\u6211\u4eec\u4e00\u8d77\u8ba8\u8bba\uff0c\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n

\u51fd\u6570\u94fe\u662f\u4e00\u79cd\u5c06\u51fd\u6570\u8f93\u51fa\u4f5c\u4e3a\u8f93\u5165\u4f20\u9012\uff0c\u5f62\u6210\u4e32\u884c\u8c03\u7528\u7684\u6a21\u5f0f\u3002\u5b83\u5728\u4e0d\u540c\u9886\u57df\u6709\u5e7f\u6cdb\u5e94\u7528\uff0c\u4f8b\u5982\u6570\u636e\u5904\u7406\u548c\u56fe\u50cf\u5904\u7406\u3002\u5b9e\u6218\u6848\u4f8b\u5305\u62ec\uff1a – \u6570\u636e\u5904\u7406\uff1a\u8bfb\u53d6\u6570\u636e\u3001\u8fc7\u6ee4\u3001\u8ba1\u7b97\u3001\u6392\u5e8f – \u56fe\u50cf\u5904\u7406\uff1a\u8c03\u6574\u4eae\u5ea6\u3001\u9510\u5316\u3001\u88c1\u526a<\/p>\n

<\/p>\n

Go \u51fd\u6570\u94fe\u5728\u4e0d\u540c\u9886\u57df\u7684\u5b9e\u9645\u5e94\u7528<\/strong><\/p>\n

\u51fd\u6570\u94fe\u662f\u6307\u5728 Go \u4e2d\u5c06\u4e00\u4e2a\u51fd\u6570\u7684\u8f93\u51fa\u4f5c\u4e3a\u53e6\u4e00\u4e2a\u51fd\u6570\u7684\u8f93\u5165\uff0c\u5f62\u6210\u4e00\u7cfb\u5217\u4e32\u884c\u8c03\u7528\u7684\u6a21\u5f0f\u3002\u5b83\u662f\u4e00\u79cd\u5f3a\u5927\u7684\u7f16\u7a0b\u6280\u672f\uff0c\u53ef\u4ee5\u7b80\u5316\u590d\u6742\u4ee3\u7801\u5e76\u63d0\u9ad8\u53ef\u8bfb\u6027\u3002<\/p>\n

\u5b9e\u6218\u6848\u4f8b\uff1a\u6570\u636e\u5904\u7406<\/strong><\/p>\n

\u51fd\u6570\u94fe\u5728\u6570\u636e\u5904\u7406\u4e2d\u975e\u5e38\u6709\u7528\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u6709\u4e00\u4e2a\u5305\u542b\u9500\u552e\u6570\u636e\u7684 CSV \u6587\u4ef6\uff0c\u9700\u8981\u5bf9\u5176\u8fdb\u884c\u5982\u4e0b\u64cd\u4f5c\uff1a<\/p>\n

    \n
  1. \u8bfb\u53d6\u6587\u4ef6\u5e76\u89e3\u6790\u6210\u7ed3\u6784\u4f53<\/li>\n
  2. \u8fc7\u6ee4\u51fa\u7279\u5b9a\u7684\u9500\u552e\u533a\u57df<\/li>\n
  3. \u8ba1\u7b97\u6bcf\u4e2a\u533a\u57df\u7684\u9500\u552e\u603b\u989d<\/li>\n
  4. \u6309\u9500\u552e\u603b\u989d\u4ece\u9ad8\u5230\u4f4e\u5bf9\u533a\u57df\u8fdb\u884c\u6392\u5e8f<\/li>\n<\/ol>\n

    \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u51fd\u6570\u94fe\u6765\u5b9e\u73b0\u6b64\u64cd\u4f5c\uff1a<\/p>\n

    import (\n    \"encoding\/csv\"\n    \"fmt\"\n    \"io\"\n    \"log\"\n    \"os\"\n    \"sort\"\n    \"strconv\"\n)\n\ntype Sale struct {\n    Region  string\n    Amount  float64\n}\n\nfunc main() {\n    \/\/ \u8bfb\u53d6\u6587\u4ef6\u5e76\u89e3\u6790\u6210\u7ed3\u6784\u4f53\n    entries, err := readCSV(\"sales.csv\")\n    if err != nil {\n        log.Fatal(err)\n    }\n\n    \/\/ \u8fc7\u6ee4\u7279\u5b9a\u9500\u552e\u533a\u57df\n    filtered := filterRegion(entries, \"Central\")\n\n    \/\/ \u8ba1\u7b97\u6bcf\u4e2a\u533a\u57df\u7684\u9500\u552e\u603b\u989d\n    totals := calculateTotals(filtered)\n\n    \/\/ \u6309\u9500\u552e\u603b\u989d\u6392\u5e8f\n    sort.Slice(totals, func(i, j int) bool {\n        return totals[i].Amount < totals[j].Amount\n    })\n\n    \/\/ \u6253\u5370\u7ed3\u679c\n    for _, t := range totals {\n        fmt.Println(t.Region, t.Amount)\n    }\n}\n\nfunc calculateTotals(sales []Sale) []Sale {\n    totals := make([]Sale, 0)\n    regionTotals := make(map[string]float64)\n    for _, s := range sales {\n        regionTotals[s.Region] += s.Amount\n    }\n    for r, t := range regionTotals {\n        totals = append(totals, Sale{Region: r, Amount: t})\n    }\n    return totals\n}\n\nfunc filterRegion(sales []Sale, region string) []Sale {\n    filtered := make([]Sale, 0)\n    for _, s := range sales {\n        if s.Region == region {\n            filtered = append(filtered, s)\n        }\n    }\n    return filtered\n}\n\nfunc readCSV(path string) ([]Sale, error) {\n    f, err := os.Open(path)\n    if err != nil {\n        return nil, err\n    }\n    defer f.Close()\n\n    r := csv.NewReader(f)\n    entries := make([]Sale, 0)\n    for {\n        record, err := r.Read()\n        if err == io.EOF {\n            return entries, nil\n        }\n        if err != nil {\n            return nil, err\n        }\n        if len(record) < 3 {\n            continue\n        }\n        val, err := strconv.ParseFloat(record[2], 64)\n        if err != nil {\n            continue\n        }\n        entries = append(entries, Sale{Region: record[1], Amount: val})\n    }\n}<\/pre>\n
    \u5b9e\u6218\u6848\u4f8b\uff1a\u56fe\u50cf\u5904\u7406<\/strong><\/p>\n
    \u51fd\u6570\u94fe\u5728\u56fe\u50cf\u5904\u7406\u4e2d\u4e5f\u5f88\u6709\u7528\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u6709\u4e00\u5f20\u56fe\u7247\uff0c\u9700\u8981\u5bf9\u5176\u8fdb\u884c\u5982\u4e0b\u64cd\u4f5c\uff1a<\/p>\n
      \n
    1. \u8c03\u6574\u4eae\u5ea6<\/li>\n
    2. \u9510\u5316<\/li>\n
    3. \u88c1\u526a<\/li>\n<\/ol>\n
      \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u51fd\u6570\u94fe\u6765\u5b9e\u73b0\u6b64\u64cd\u4f5c\uff1a<\/p>\n
      import (\n    \"fmt\"\n    \"image\"\n    \"log\"\n    \"os\"\n\n    \"github.com\/disintegration\/imaging\"\n)\n\nfunc main() {\n    \/\/ \u8bfb\u53d6\u56fe\u7247\n    image, err := imaging.Open(\"image.jpg\")\n    if err != nil {\n        log.Fatal(err)\n    }\n\n    \/\/ \u8c03\u6574\u4eae\u5ea6\n    img := imaging.AdjustBrightness(image, 20)\n\n    \/\/ \u9510\u5316\n    img = imaging.Sharpen(img, 10)\n\n    \/\/ \u88c1\u526a\n    img = imaging.Crop(img, image.Bounds().Min, image.Bounds().Max.Sub(25).Add(image.Bounds().Min))\n\n    \/\/ \u4fdd\u5b58\u7ed3\u679c\n    err = imaging.Save(img, \"result.jpg\", imaging.JPEGQuality(80))\n    if err != nil {\n        log.Fatal(err)\n    }\n    fmt.Println(\"Image processed and saved\")\n}<\/pre>\n
      \u7ed3\u8bba<\/strong><\/p>\n
      \u51fd\u6570\u94fe\u662f Go \u4e2d\u4e00\u79cd\u529f\u80fd\u5f3a\u5927\u4e14\u7075\u6d3b\u7684\u7f16\u7a0b\u6280\u672f\uff0c\u53ef\u5728\u4e0d\u540c\u9886\u57df\u63d0\u4f9b\u4e30\u5bcc\u7684\u5e94\u7528\u3002\u901a\u8fc7\u5c06\u51fd\u6570\u4e32\u8054\u8d77\u6765\uff0c\u4f60\u53ef\u4ee5\u7b80\u5316\u590d\u6742\u4ee3\u7801\uff0c\u63d0\u9ad8\u53ef\u8bfb\u6027\uff0c\u5e76\u5199\u51fa\u66f4\u7b80\u6d01\u53ef\u7ef4\u62a4\u7684\u7a0b\u5e8f\u3002<\/p>\n
      \u672c\u7bc7\u5173\u4e8e\u300aGOLANG \u51fd\u6570\u94fe\u5728\u4e0d\u540c\u9886\u57df\u7684\u5b9e\u9645\u5e94\u7528\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\u6ce8GOLANG\u516c\u4f17\u53f7\uff01<\/p>\n
      \n
      \n <\/dt>\n
      \n   React Basics~Render Performance\/ useCallback\n <\/dd>\n<\/dl>\n
      \n
      \n <\/dt>\n
      \n   Java \u51fd\u6570\u4e2d\u7684\u5f02\u5e38\u7c7b\u578b\u6709\u54ea\u4e9b\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
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