HashMap in Python, Java, Typescript and Go

 Python

In Python Map/Hashmap is implemented as dictionaries,  the dictionaries have items stored as key-value pairs, where keys should be unique. 

single_dict = dict(roleId=10001,name='Test')

print(single_dict)

multi_dict = []

single_dict_1 = {'roleId':10001,'name':'Test'}

single_dict_2 = {'roleId':10002, 'name':'Test1'}

multi_dict.append(single_dict_1)

multi_dict.append(single_dict_2)

print(multi_dict)

Java

Map

public class Main {

    public static void main(String args[]) {

      Map<String, SchoolClass> mapTemp = new HashMap();

      SchoolClass klass1 = new SchoolClass(10001, "Test");

      SchoolClass klass2 = new SchoolClass(10002, "Test1");

      

      

      mapTemp.put("klass1", klass1);

      mapTemp.put("klass2", klass2);

          

      mapTemp.forEach((k, v) -> System.out.println((k + ":" + v)));

    }

}

public class SchoolClass{

    

    public SchoolClass(Integer id, String name){

        this.roleId = id;

        this.name = name;

    }

    Integer roleId;

    String name;

    

    public String toString(){

        return "RoleId: "+this.roleId+ " Name: "+ this.name;

    }

}