let's convert left key to string ^^ problem #1

decode.go

@@ -1,11 +1,27 @@
 package main
 
+import (
+	"fmt"
+	"strconv"
+)
+
 func decode(input interface{}) interface{} {
 	switch in := input.(type) {
 	case map[interface{}]interface{}:
 		rec := map[string]interface{}{}
 		for k, v := range in {
-			rec[k.(string)] = decode(v)
+
+			switch k.(type) {
+			case bool:
+				rec[strconv.FormatBool(k.(bool))] = decode(v)
+			case int:
+				rec[strconv.Itoa(k.(int))] = decode(v)
+			case float64:
+				rec[fmt.Sprintf("%f", k.(float64))] = decode(v)
+			case string:
+				rec[k.(string)] = decode(v)
+			}
+
 		}
 		return rec
 	case []interface{}: