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

Assignment Help:

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.

 

 


Related Discussions:- What is a null object in c++

Explain the physical and logical paths in a computer, How is communication ...

How is communication between computers established in Internet. What characteristics need to be defined in a communication protocol? Explain the physical and logical paths in a com

Explain the role of a bus arbiter in a multiprocessor, Explain the role of ...

Explain the role of a bus arbiter in a multiprocessor configuration. Bus arbiter: Which functions to resolve priority between bus masters and allows only one device at a time t

How to working in dreamweaver, Q. How to Working in Dreamweaver? Let's ...

Q. How to Working in Dreamweaver? Let's now start our journey into the realm of Dreamweaver. We begin with typing in a few test lines in Design view. See that how our work area

different versions of microsoft access to open the database, What format s...

What format should my database be saved in to allow different versions of Microsoft Access to open the database? Ans) MS Access is not backwards compatible. To share tables amon

Write a verilog code for synchronous and asynchronous reset, Write a Verilo...

Write a Verilog code for synchronous and asynchronous reset? Synchronous  reset, synchronous means clock dependent so reset must not be present in sensitivity disk eg: alway

What is memory controller, What is memory controller? A memory controll...

What is memory controller? A memory controller is a circuit which is interposed among the processor and the dynamic memory. It is used for performing multiplexing of address bi

What is the ccitt standard bandwidth for speech, The CCITT standard bandwid...

The CCITT standard bandwidth for speech is: (A) 20000 Hz                                  (B) 15000 Hz (C) 7000 Hz                                    (D) 3400 Hz Ans:

Unencoded micro-instructions, Unencoded micro-instructions One bit ...

Unencoded micro-instructions One bit is required for each control signal; so number of bits needed in a micro-instruction is high. It represents a detailed hardware vi

Software engineering, specialization,ggeneralization and aggregation of rai...

specialization,ggeneralization and aggregation of railway reservation system?

C++, Byteland county is very famous for luminous jewels. Luminous jewels ar...

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

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd