Temporay Class Objects

Temporay Class Objects

Would you please tell me the difference between regular class objects and temporary class objects?

The compiler creates temporary objects in several occasions. Usually, the temporary stores the result of a subexpression that is immediatley used the subexpression has been evaluated. For example, in the following expression,

  string  x, y, z;  x=y+z;

the result of the subexpression x+z must be stored somewhere so that the compiler can use it to perform the assignment. Therefore, the compiler creates a temporary string objects that holds the result of the subexpression and then it assigns that temporary string to x. The temporary is destructed immediately after the assignment takes place. In other words, the compiler conceptually transforms the original expression x=y+z; into something like this:

  string _temp = y+z; // store result in a temp  x = _temp; // assign temporary to x  _temp.~string(); // destroy temporary

A temporary is also generated when you pass an object by value to a function, or when you return an object by value from a function.

You can explicitly create a temporary object by invoking the class’s constructor. For example:

  void f(string s);  int main()  {   f (string()); // create a temp and pass it to f  }

Unlike ordinary objects, temporaries don’t have names. Therefore, you can’t access them directly.

Share the Post:
Heading photo, Metadata.

What is Metadata?

What is metadata? Well, It’s an odd concept to wrap your head around. Metadata is essentially the secondary layer of data that tracks details about the “regular” data. The regular

XDR solutions

The Benefits of Using XDR Solutions

Cybercriminals constantly adapt their strategies, developing newer, more powerful, and intelligent ways to attack your network. Since security professionals must innovate as well, more conventional endpoint detection solutions have evolved

AI is revolutionizing fraud detection

How AI is Revolutionizing Fraud Detection

Artificial intelligence – commonly known as AI – means a form of technology with multiple uses. As a result, it has become extremely valuable to a number of businesses across

AI innovation

Companies Leading AI Innovation in 2023

Artificial intelligence (AI) has been transforming industries and revolutionizing business operations. AI’s potential to enhance efficiency and productivity has become crucial to many businesses. As we move into 2023, several