dongpu1881
dongpu1881
2019-02-25 20:01
浏览 173
已采纳

golang从接口{}获取值

I am iterating through the results returned from a couchDB.View and extracting the Key.

for _, row := range rows {
        fmt.Printf("%v, %T
", row.Key, row.Key)
    }

The result of this is:

[nh001 mgr], []interface {}
[nh002 nh], []interface {}

I need to read through this interface and get the 2nd value ("mgr" or "nh").

I am not able to iterate over this as this is not a map.

图片转代码服务由CSDN问答提供 功能建议

我正在遍历从沙发床返回的结果。查看并提取密钥。 \ n

 用于_,行:=范围行{
 fmt.Printf(“%v,%T 
”,row.Key,row.Key)
} 
  <  / pre> 
 
 

的结果是:

  [nh001 mgr],[] interface {} 
 [nh002 nh],[] interface  {} 
   
 
 

我需要通读此接口并获取第二个值(“ mgr”或“ nh”)。 < p>我无法对此进行迭代,因为这不是地图。

  • 点赞
  • 写回答
  • 关注问题
  • 收藏
  • 邀请回答

1条回答 默认 最新

  • douchunji1885
    douchunji1885 2019-02-25 20:22
    已采纳

    I assume that your value row.Key is returned from somewhere as interface{}?

    If yes then in your range rows you can try to cast it to type []interface{}. So your code should look something like this.

    for _, row := range rows {
        if val, ok := row.Key.([]interface{}); ok {
            fmt.Println(val[1])
        }
    }
    
    点赞 评论

相关推荐