如何调用在dart中接受Map类型参数的函数?

Question

我想知道Map的执行情况

void main(){
  var info = userInfo(); /* what can I pass here as args? */
  print(info);
}
userInfo(Map user){
  /* what do I write here? */
}

Answer 1

你好，你可以传递一个地图，并使用地图如下

  void main(){
     Map user_map= 
     {
    "first_name" : "fname",
    "last_name" : "lname",
    "gender" : "male",
    "location" : 
          { "state" : "state",
            "country" : "country",
            "place" : "place"
           } 
    }    
        
    var info = userInfo(user_map); /* what can I pass here as args? */
    print(info);
    }
            
            userInfo(Map user){
              /* here you can use the map values like if you want to print the value of key 
              first_name */
             print(user["first_name"]);
    
            }