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
Q. What do you mean by Video Memory ? As declared before video memory is also entitled framebuffer since it buffers video frames to be displayed. The quality of a video display

What is sector sparing? Low-level formatting also sets aside spare sectors not visible to the operating system. The controller can be told to change each bad sector logically w

Define the term Grade of Service. Grade of Service: In loss systems, the traffic carried through the network is usually lower than the actual traffic offered to the network t

Suppose that your team is then asked to expand the system. The publisher now wishes to make other computer science publications. As a team member, you are asked to make a class tha

A communication protocol is an agreement which specifies a common language two computers use to exchange messages. For instance, a protocol specifies exact format and meaning of ev

Explain the Sum of Product Form? In The Boolean Algebra a product is produced by "ANDing" two or more variable inputs. Product of the two variables is expressed as AB and three

What is the difference between top-down and bottom-up, programming? Ans: Top-down and Bottom-up Approaches In Top-down programming approach, we begin by identifying the main

Discuss the advantages of Electronics Data Exchange (EDI). Advantages of EDI: Electronics Data Exchange's saves needless re-capture of data. It leads to faster transfer of d

Using defparam Parameter values can be changed in any module instance in the design with keyword defparam. Hierarchical name of the module instance can be used to override para

What are coupling and cohesion and why are they important concepts in software design?