将[] []界面转换为[] []字符串[重复]

Question

This question already has an answer here:

• Cannot convert []string to []interface {} 6 answers

Is there any easy way to convert [][] interface{} to [][]string ? What I want is to to write this [][] interface{} to a csv but writer in go accepts only [][]string. Additional info : my [][] interface{} contains 4 columns 2 of them are string and 2 are json.Number.

Thanks in advance.

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Answer 1

Simplest way is probably to make new slices and write some loops:

var orig [][]interface{}
var strs = make([][]string, len(orig))
for i := range orig {
   strs[i] = make([]string, len(orig[i]))
   for j := range orig[i]{
     strs[i][j] = fmt.Sprint(orig[i][j])
   }
}