map to string golang code example

Example 1: initialize map in golang

// By default maps in Go behaves like a default dictionary in python
m := make(map[string]int)

m["Dio"] = 3
m["Jonathan"] = 1

Example 2: golang convert json string to map

jsonMap := make(map[string]interface{})
err := json.Unmarshal([]byte(jsonStr), &jsonMap)

Example 3: go get from map

var id string
var ok bool
if x, found := res["strID"]; found {
     if id, ok = x.(string); !ok {
        //do whatever you want to handle errors - this means this wasn't a string
     }
} else {
   //handle error - the map didn't contain this key
}

Example 4: map string interface golang

{
   "name":"John",
   "age":29,
   "hobbies":[
      "martial arts",
      "breakfast foods",
      "piano"
   ]
}