I’m new to Go and I try to build a Json-builder functionality to practice. My aim is to create a recursive library to build json.
This is the warning I get for the "second" field.
Unexpected newline in composite literal
and here’s my attempt. I don’t see a mistake here:
package main
import (
"fmt"
)
type JsonNode struct{
fields map[string]interface{}
}
func BuildJson (fields) JsonNode {
jn := &JsonNode{}
for key,value := range fields {
jn.fields[key] = value
}
return jn
}
func main () {
json := BuildJson(
map[string]any{
"first": 1,
"second": BuildJson(map[string]any{"child": "test"}) // Error for this line.
}
)
fmt.Printf(json)
}
>Solution :
You have multiple errors in your code. This version works, I suggest you use some IDE that report errors prior to compilation (they sometimes fix it for you).
package main
import (
"fmt"
)
type JsonNode struct {
fields map[string]interface{}
}
func BuildJson(fields map[string]any) JsonNode {
jn := &JsonNode{}
jn.fields = make(map[string]interface{})
for key, value := range fields {
jn.fields[key] = value
}
return *jn
}
func main() {
json := BuildJson(
map[string]any{
"first": 1,
"second": BuildJson(map[string]any{"child": "test"}), // Error for this line.
},
)
fmt.Println(json)
}