Described smart pointer?, C/C++ Programming

Assignment Help:

A: A smart pointer is a C++ class which mimics a regular pointer in syntax and some semantics, however it does more. Since smart pointers to distinct types of objects tend to have a lot of code in common, approximately all good-quality smart pointers in existence are templated trhough the pointee type, as you can notice in the following code:

template

class SmartPtr

{

public:

explicit SmartPtr(T* pointee) : pointee_(pointee); SmartPtr& operator=(const SmartPtr& other);

~SmartPtr();

T& operator*() const

{

...

return *pointee_;

}

T* operator->() const

{

...

return pointee_;

}

private:

T* pointee_;

...

};

SmartPtr aggregates a particular pointer to T in its member variable pointee_. Most smart pointers do this. In some of the cases, a smart pointer may aggregate some handles to data and compute the pointer on the fly.

The two operators give SmartPtr pointer-like semantics and syntax. i.e., you can write

class Widget

{

public:

void Fun();

};

SmartPtr sp(new Widget);

sp->Fun(); (*sp).Fun();

Sideways from the definition of sp, nothing reveals it since not being a pointer. It is the mantra of smart pointers: You can replace pointer definitions along with smart pointer definitions without incurring major changes to your application's code. Thus you get extra goodies along with ease. Minimizing code changes is extremely appealing and essential for getting large applications to employ smart pointers. However, smart pointers are not a free lunch.


Related Discussions:- Described smart pointer?

I need profile and optimize a c++ library for speed, I need Profile and opt...

I need Profile and optimize a C++ library for speed Project Description: Optimize and profile an existing C++ library for speed. This library uses OpenMP and OpenCV and C+

Error handling and constructor, Provide me the answer, Can a constructor th...

Provide me the answer, Can a constructor throws an exception? How to handle the error when the constructor fails?

Blanche has a fashion design company called BLB_Best_Clothin, Blanche has a...

Blanche has a fashion design company called BLB_Best_Clothing Pty. That she has just opened recently

But operator overloading makes class look ugly; isn''t it , Q: But operator...

Q: But operator overloading makes class look ugly; isn't it assumed to make my code clearer? A: Operator overloading makes life simpler for the users of a class, not for develop

Write a program to calculate the timetable, Write a program to calculate th...

Write a program to calculate the timetable for numbers 1 -> 10 and display them as follows. Your solution should use for do loops      #include stdio.h void main() {    char p

Write a program for simulating jet-powered car acceleration, The absolute l...

The absolute land-speed record of 763.035 MPH (Mach 1.02) was set in October 15 1997 by a jet-powered car called Thrust SSC in the Black Rock Desert of northern Nevada. The team th

I need decompile library(.dll or .so) into source code, I need Decompile Li...

I need Decompile Library(.DLL or .SO) into source code Project Description: I am seeking an experienced programmer or anyone who knows a thing or two about reverse engineerin

Age guessing game, Write a program that predicts users’ age (0-128 years ol...

Write a program that predicts users’ age (0-128 years old) with at most 7 questions. The game starts with asking the user whether he/she is younger or older than G (an initial gues

#compiler design limiting instrutions, Ravi is a newbie to the programming ...

Ravi is a newbie to the programming and while learning the programming language he came to know the following rules: · Each program must start with ''''''''{'''''''' and end wi

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