Im pretty sure the answer is PWD
Answer:
when user wants duplicate copy of the object
Explanation:
Encapsulation are one of the key foundations of object-oriented programming (OOP). It involves the bundling of data or information with the methods and various techniques which operate on that data.
It can be used in hiding the true values or state of a structured data object that is in a class, preventing unauthorized parties' direct access to them.
The circumstances that can be allowed in returning a reference to the existing Engine is when user wants duplicate copy of the object.
Answer:
Prolog program are used in the artificial intelligence and the web development in a systematic manner process. As, it is also sometimes known as declarative language which basically consist of some facts and list. Prolog program are divided into the sections that are:
- Domain sections
- Clauses sections
- Predicates sections
- Goal sections
We need each section of the prolog program because all the sections introduced the systematic program and performed there particular functions so by using all these processing steps an efficient function are formed.