What is a null object in c++, Computer Engineering

It is an object of a number of classes whose purpose is to indicate that a real object of that class does not exist. One common use for a null object is a return value from a member function that is supposed to return an object with some specified properties but cannot search such an object.



Posted Date: 4/8/2013 3:32:59 AM | Location : United States

Related Discussions:- What is a null object in c++, Assignment Help, Ask Question on What is a null object in c++, Get Answer, Expert's Help, What is a null object in c++ Discussions

Write discussion on What is a null object in c++
Your posts are moderated
Related Questions
Write a 2-3 page paper (excluding title, abstract, introduction, and references) describing the concepts of the Information Systems Delivery Cycle (SDLC) and how the Project Manage

When a robot scripts runs the output makes a test log. Test logs are managed now is the TestManager application. Rational now permits you to classify your logs into any type of for

Explain LRU Page replacement algorithm. LRU policy: It expands to least recently use. This policy proposes that we remove a page that last usage is farthest from present time

What do understand by the granularity of a parallel system ? Granularity refers to the quantity of computation complete in parallel relative to the size of the entire program. I

The field SY-STEPL refers to The index of the screen table row that is presently being processed.  The system variable SY-stepl only has a meaning within the confines of LOOP.

Q. Combined Parallel Work-sharing Constructs? Combined parallel work sharing constructs are shortcuts for specifying a work sharing construct nested instantaneously in a parall

Byteland county is very famous for luminous jewels. Luminous jewels are used in making beautiful necklaces. A necklace consists of various luminous jewels of particular colour. Nec

Question: (a) Software may be categorized into System software and Application software. Differentiate between these two categories, using examples to support your answer.

What is Tri-state logic ? Ans. Tri-state Logic: In common logic circuits, there are two states of the output, as LOW and HIGH. If the output is not in the LOW state, this