{"id":2036,"date":"2026-07-28T06:20:52","date_gmt":"2026-07-28T06:20:52","guid":{"rendered":"https:\/\/www.vpascode.com\/ja\/docs\/uncategorized\/go-visualizer-guide\/"},"modified":"2026-07-28T06:20:52","modified_gmt":"2026-07-28T06:20:52","slug":"go-visualizer-guide","status":"publish","type":"ld_docs","link":"https:\/\/www.vpascode.com\/ja\/docs\/vpascode-docs\/go-visualizer-guide\/","title":{"rendered":"Go"},"content":{"rendered":"

\u30af\u30e9\u30a6\u30c9\u30cd\u30a4\u30c6\u30a3\u30d6\u306a\u30de\u30a4\u30af\u30ed\u30b5\u30fc\u30d3\u30b9\u3001\u30b7\u30b9\u30c6\u30e0\u30c4\u30fc\u30eb\u3001\u307e\u305f\u306f\u4e26\u884c\u30c7\u30fc\u30bf\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u3092Go\u3067\u8a2d\u8a08\u3059\u308b\u969b\u3001\u51dd\u7e2e\u3055\u308c\u305f\u69cb\u9020\u4f53\u5b9a\u7fa9\u3084\u30d1\u30c3\u30b1\u30fc\u30b8\u30b7\u30b0\u30cd\u30c1\u30e3\u3092\u8aad\u3080\u3068\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u53ef\u8996\u5316\u3059\u308b\u306e\u304c\u96e3\u3057\u304f\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002Go Visualizer<\/strong>Go\u69cb\u9020\u4f53\u5ba3\u8a00\u3001\u57cb\u3081\u8fbc\u307f\u30d5\u30a3\u30fc\u30eb\u30c9\u3001\u578b\u5b9a\u7fa9\u3001\u304a\u3088\u3073\u6697\u9ed9\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u5b9f\u88c5\u3092\u3001\u660e\u78ba\u3067\u30a4\u30f3\u30bf\u30e9\u30af\u30c6\u30a3\u30d6\u306a\u56f3\u5730\u56f3\u306b\u5909\u63db\u3057\u307e\u3059\u3002\u69cb\u9020\u4f53\u306e\u69cb\u6210\u3001\u516c\u958b\/\u975e\u516c\u958b\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u53ef\u8996\u6027\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u632f\u308b\u821e\u3044\u5951\u7d04\u3092\u89e3\u6790\u3059\u308b\u3053\u3068\u3067\u3001\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u958b\u767a\u8005\u3084\u30b7\u30b9\u30c6\u30e0\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30e2\u30c7\u30eb\u3084\u30b5\u30fc\u30d3\u30b9\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u4e00\u76ee\u3067\u8996\u899a\u7684\u306b\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n

Go\u30d3\u30b8\u30e5\u30a2\u30e9\u30a4\u30bc\u30fc\u30b7\u30e7\u30f3\u306e\u4ed5\u7d44\u307f<\/h2>\n

VPasCode\u3067\u306f\u3001Go\u306e\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u304c\u81ea\u52d5\u7684\u306bstruct<\/code>\u5b9a\u7fa9\u3001interface<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u5ba3\u8a00\u3001\u57cb\u3081\u8fbc\u307f\u69cb\u9020\u4f53\u306e\u69cb\u6210\u3001\u304a\u3088\u3073\u30e1\u30bd\u30c3\u30c9\u30bb\u30c3\u30c8\u3092\u3001\u69cb\u9020\u5316\u3055\u308c\u305f\u8996\u899a\u7684\u56f3\u30d6\u30ed\u30c3\u30af\u306b\u89e3\u6790\u3057\u307e\u3059\u3002\u69cb\u9020\u4f53\u306f\u4e3b\u306a\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u30ab\u30fc\u30c9\u3068\u3057\u3066\u63cf\u753b\u3055\u308c\u3001\u5927\u6587\u5b57\uff08\u516c\u958b\uff09\u307e\u305f\u306f\u5c0f\u6587\u5b57\uff08\u975e\u516c\u958b\uff09\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u53ef\u8996\u6027\u30ec\u30d9\u30eb\u3092\u793a\u3057\u3001\u69cb\u9020\u4f53\u306e\u57cb\u3081\u8fbc\u307f\u307e\u305f\u306f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u30e1\u30bd\u30c3\u30c9\u306e\u4e00\u81f4\u304c\u3001\u8996\u899a\u7684\u30ce\u30fc\u30c9\u9593\u306e\u69cb\u9020\u7684\u95a2\u4fc2\u7dda\u3092\u81ea\u52d5\u7684\u306b\u751f\u6210\u3057\u307e\u3059\u3002<\/p>\n

1. \u5fc5\u9808\u306e\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7<\/h3>\n

\u6a19\u6e96\u7684\u306aGo\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u3092\u53ef\u8996\u5316\u3059\u308b\u306b\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3001\u69cb\u9020\u4f53\u3001\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002\u30c9\u30e1\u30a4\u30f3\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3084\u632f\u308b\u821e\u3044\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306a\u3069\u306e\u30a4\u30c7\u30a3\u30aa\u30e0\u7684\u306aGo\u30e2\u30c7\u30eb\u306f\u3001\u57fa\u672c\u7684\u306a\u69cb\u9020\u4f53\u306e\u69cb\u6210\u3068\u6697\u9ed9\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u6e96\u62e0\u3092\u793a\u3057\u3066\u3044\u307e\u3059\uff1a<\/p>\n

\n
\nGo<\/span>
\n
\n<\/path><\/path><\/svg>
\nVPasCode\u3067Go\u3092\u7de8\u96c6<\/span>
\n<\/a>\n<\/div>\n
\n
\r\n
\r\n Go<\/span>\r\n \r\n <\/path><\/path><\/svg>\r\n Edit Go in VPasCode<\/span>\r\n <\/a>\r\n <\/div>\r\n
\r\n 
package main\r\n\r\nimport \"fmt\"\r\n\r\n\/\/ Reader\u306f\u30c7\u30fc\u30bf\u306e\u8aad\u307f\u53d6\u308a\u3092\u5b9a\u7fa9\u3059\u308b\u632f\u308b\u821e\u3044\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\r\ntype Reader interface {\r\n\tRead() ([]byte, error)\r\n}\r\n\r\n\/\/ Writer\u306f\u30c7\u30fc\u30bf\u306e\u66f8\u304d\u8fbc\u307f\u3092\u5b9a\u7fa9\u3059\u308b\u632f\u308b\u821e\u3044\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\r\ntype Writer interface {\r\n\tWrite(data []byte) (int, error)\r\n}\r\n\r\n\/\/ BaseEntity\u306f\u69cb\u9020\u4f53\u5168\u4f53\u306b\u57cb\u3081\u8fbc\u307e\u308c\u308b\u5171\u901a\u306e\u76e3\u67fb\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u542b\u3080\r\ntype BaseEntity struct {\r\n\tID        string\r\n\tCreatedAt string\r\n}\r\n\r\n\/\/ FileStore\u306fBaseEntity\u3092\u57cb\u3081\u8fbc\u3093\u3060\u30b9\u30c8\u30ec\u30fc\u30b8\u5b9f\u88c5\u3092\u8868\u3059\r\ntype FileStore struct {\r\n\tBaseEntity\r\n\tPath      string\r\n\tisClosed  bool\r\n}\r\n\r\nfunc (f *FileStore) Read() ([]byte, error) {\r\n\tfmt.Println(\"\u30d1\u30b9\u304b\u3089\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u307f\u4e2d:\", f.Path)\r\n\treturn []byte(\"data\"), nil\r\n}\r\n\r\nfunc (f *FileStore) Write(data []byte) (int, error) {\r\n\tfmt.Println(\"\u30d1\u30b9\u306b\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u307f\u4e2d:\", f.Path)\r\n\treturn len(data), nil\r\n}<\/code><\/pre>                <\/div>\r\n                
\r\n                    \r\n                        <\/path><\/path><\/svg>\r\n                        Edit Go in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<\/p><\/div>\n
\n
\n<\/path><\/path><\/svg>
\nVPasCode\u3067Go\u3092\u7de8\u96c6<\/span>
\n<\/a>\n<\/div>\n<\/div>\n
\"\"<\/p>\n
\u00a0<\/p>\n
\u9ad8\u5ea6\u306a\u69cb\u9020\u6280\u8853<\/h2>\n
Go\u306e\u30d3\u30b8\u30e5\u30a2\u30e9\u30a4\u30bc\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u660e\u793a\u7684\u306a\u69cb\u9020\u4f53\u30e2\u30c7\u30eb\u3068\u30c1\u30e3\u30cd\u30eb\u5951\u7d04\u306b\u4f9d\u5b58\u3059\u308bHTTP\u30cf\u30f3\u30c9\u30e9\u3001\u30df\u30c9\u30eb\u30a6\u30a7\u30a2\u30c1\u30a7\u30fc\u30f3\u3001\u4e26\u884c\u30ef\u30fc\u30ab\u30fc\u30d7\u30fc\u30eb\u3092\u30de\u30c3\u30d4\u30f3\u30b0\u3059\u308b\u306e\u306b\u512a\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
1. \u30de\u30a4\u30af\u30ed\u30b5\u30fc\u30d3\u30b9HTTP\u30cf\u30f3\u30c9\u30e9\u3068\u30b5\u30fc\u30d3\u30b9\u5c64<\/h3>\n
\u30ea\u30af\u30a8\u30b9\u30c8\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3001\u57cb\u3081\u8fbc\u307f\u30ed\u30ac\u30fc\u3092\u6301\u3064\u30b5\u30fc\u30d3\u30b9\u69cb\u9020\u4f53\u3001\u30ea\u30dd\u30b8\u30c8\u30ea\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u5951\u7d04\u3092\u30e2\u30c7\u30eb\u5316\u3059\u308b\u3053\u3068\u3067\u3001VPasCode\u306fGo\u30de\u30a4\u30af\u30ed\u30b5\u30fc\u30d3\u30b9\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u8aad\u307f\u3084\u3059\u304f\u8996\u899a\u7684\u306a\u30c4\u30ea\u30fc\u306b\u660e\u78ba\u306b\u5c55\u958b\u3057\u307e\u3059\uff1a<\/p>\n
\n
\nGo<\/span>
\n
\n<\/path><\/path><\/svg>
\nVPasCode\u3067Go\u3092\u7de8\u96c6<\/span>
\n<\/a>\n<\/div>\n
\n            
\r\n                                
\r\n                    Go<\/span>\r\n                    \r\n                        <\/path><\/path><\/svg>\r\n                        Edit Go in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                
\r\n                    
package service\r\n\r\ntype User struct {\r\n\tID    int    `json:\"id\"`\r\n\tName  string `json:\"name\"`\r\n\tEmail string `json:\"email\"`\r\n}\r\n\r\ntype UserRepository interface {\r\n\tFindByID(id int) (*User, error)\r\n\tSave(user *User) error\r\n}\r\n\r\ntype Logger struct {\r\n\tPrefix string\r\n}\r\n\r\ntype UserService struct {\r\n\tLogger\r\n\trepo UserRepository\r\n}\r\n\r\nfunc NewUserService(l Logger, r UserRepository) *UserService {\r\n\treturn &UserService{\r\n\t\tLogger: l,\r\n\t\trepo:   r,\r\n\t}\r\n}\r\n\r\nfunc (s *UserService) GetUser(id int) (*User, error) {\r\n\treturn s.repo.FindByID(id)\r\n}<\/code><\/pre>                <\/div>\r\n                
\r\n                    \r\n                        <\/path><\/path><\/svg>\r\n                        Edit Go in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<\/p><\/div>\n
\n
\n<\/path><\/path><\/svg>
\nVPasCode\u3067Go\u3092\u7de8\u96c6<\/span>
\n<\/a>\n<\/div>\n<\/div>\n
\"\"<\/p>\n
\u00a0<\/p>\n
\u4e26\u884c\u51e6\u7406\u3068\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u30ef\u30fc\u30ab\u30fc\u306e\u69cb\u9020\u5316<\/h2>\n
\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u30b9\u30c6\u30fc\u30b8\u3001\u30ef\u30fc\u30ab\u30fc\u69cb\u6210\u3001\u30ab\u30b9\u30bf\u30e0\u30c1\u30e3\u30cd\u30eb\u30da\u30a4\u30ed\u30fc\u30c9\u69cb\u9020\u4f53\u3092\u53ef\u8996\u5316\u3059\u308b\u3053\u3068\u3067\u3001Go\u30c1\u30fc\u30e0\u306f\u660e\u78ba\u3067\u5206\u96e2\u3055\u308c\u305f\u4e26\u884c\u30b7\u30b9\u30c6\u30e0\u3092\u8a2d\u8a08\u3067\u304d\u307e\u3059\u3002<\/p>\n
1. \u30ef\u30fc\u30ab\u30fc\u30d7\u30fc\u30eb\u3068\u30bf\u30b9\u30af\u30c7\u30a3\u30b9\u30d1\u30c3\u30c1\u30e3\u30fc<\/h3>\n
\u30bf\u30b9\u30af\u30da\u30a4\u30ed\u30fc\u30c9\u3001\u30ef\u30fc\u30ab\u30fc\u69cb\u9020\u4f53\u3001\u30d7\u30fc\u30eb\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3066\u3001\u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\u306a\u51e6\u7406\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u3092\u30de\u30c3\u30d4\u30f3\u30b0\u3057\u307e\u3059\uff1a<\/p>\n
\n
\nGo<\/span>
\n
\n<\/path><\/path><\/svg>
\nVPasCode\u3067Go\u3092\u7de8\u96c6<\/span>
\n<\/a>\n<\/div>\n
\n            
\r\n                                
\r\n                    Go<\/span>\r\n                    \r\n                        <\/path><\/path><\/svg>\r\n                        Edit Go in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                
\r\n                    
package worker\r\n\r\ntype JobStatus string\r\n\r\nconst (\r\n\tStatusPending   JobStatus = \"PENDING\"\r\n\tStatusCompleted JobStatus = \"COMPLETED\"\r\n)\r\n\r\ntype Job struct {\r\n\tID      string\r\n\tPayload []byte\r\n\tStatus  JobStatus\r\n}\r\n\r\ntype TaskProcessor interface {\r\n\tProcess(job *Job) error\r\n}\r\n\r\ntype Pool struct {\r\n\tWorkerCount int\r\n\tprocessor   TaskProcessor\r\n\tjobs        chan Job\r\n}\r\n\r\nfunc NewPool(count int, p TaskProcessor) *Pool {\r\n\treturn &Pool{\r\n\t\tWorkerCount: count,\r\n\t\tprocessor:   p,\r\n\t\tjobs:        make(chan Job, 100),\r\n\t}\r\n}<\/code><\/pre>                <\/div>\r\n                
\r\n                    \r\n                        <\/path><\/path><\/svg>\r\n                        Edit Go in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<\/p><\/div>\n
\n
\n<\/path><\/path><\/svg>
\nVPasCode\u3067Go\u3092\u7de8\u96c6\u3059\u308b<\/span>
\n<\/a>\n<\/div>\n<\/div>\n
\"\"<\/p>\n
\u00a0<\/p>\n
\u6226\u7565\u7684\u306a\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h2>\n
    \n
  • \u69cb\u9020\u4f53\u306e\u57cb\u3081\u8fbc\u307f\u3092\u6d3b\u7528\u3057\u3066\u69cb\u6210\u3092\u5b9f\u73fe\u3059\u308b\uff1a<\/strong>Go\u306e\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u3092\u30e2\u30b8\u30e5\u30fc\u30eb\u5316\u304b\u3064\u72ec\u7acb\u6027\u3092\u4fdd\u3064\u305f\u3081\u306b\u3001\u6df1\u3044\u968e\u5c64\u69cb\u9020\u3088\u308a\u3082\u69cb\u9020\u4f53\u306e\u57cb\u3081\u8fbc\u307f\u3092\u512a\u5148\u3059\u308b\u3002<\/li>\n
  • \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5c0f\u3055\u304f\u3001\u7126\u70b9\u3092\u7d5e\u3063\u3066\u4fdd\u6301\u3059\u308b\uff1a<\/strong> \u5358\u4e00\u30e1\u30bd\u30c3\u30c9\u307e\u305f\u306f\u4e8c\u3064\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3064\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\uff08\u4f8b\u3048\u3070Reader<\/code> \u307e\u305f\u306f Writer<\/code>\uff09\u3092\u8a2d\u8a08\u3059\u308b\u3053\u3068\u3067\u3001\u69cb\u9020\u4f53\u304c\u81ea\u7136\u306b\u5951\u7d04\u3092\u6697\u9ed9\u7684\u306b\u6e80\u305f\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/li>\n
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