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?

Want wellness software, Project Description: We are looking to have soft...

Project Description: We are looking to have software that we will use to track employee information regarding our wellness program. We would like the system to be able to follow

Function with two arguments, Write out pseudocode for a function called "an...

Write out pseudocode for a function called "and" that takes two arguments, both booleans, and returns the logical and of the inputs. DO NOT use the logical and operator: instead, w

Harcourt social studies, how would land elevation have changed if Coronado ...

how would land elevation have changed if Coronado had traveled 150 miles due west from what is today Arizona instead of east toward New Mexico

C language, WHAT IS A C LANGUAGE? C IS A PROGRAMMING?

WHAT IS A C LANGUAGE? C IS A PROGRAMMING?

Program to input 2 date & produce a new date - c++ program, /*  THIS PROGRA...

/*  THIS PROGRAM IS TO ASK USER TO INPUT TWO DATE & PRODUCE A NEW DATE  */ #include #include struct date  {   int dd;   int yy;   int mm;  }; date add(date d1,date d2)    {

Explain static variables, Static Variables Static variables have the si...

Static Variables Static variables have the similar scope s automatic variables, but, unlike automatic variables, static variables retain their values over number of function ca

Determine the size of an interger data type without using , Determine the s...

Determine the size of an interger data type without using sizeof() function? A: #include int main() { int *i ; int *j = i + 1; cout }

Class booking system, I want source code for class booking system by using ...

I want source code for class booking system by using C++ Programming...Urgent

Assigment, Hi is there any chance to get assignment for fresher tutor

Hi is there any chance to get assignment for fresher tutor

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