We help IT Professionals succeed at work.

We've partnered with Certified Experts, Carl Webster and Richard Faulkner, to bring you two Citrix podcasts. Learn about 2020 trends and get answers to your biggest Citrix questions!Listen Now

x

Shallow copy with no assignment operator

chsalvia
chsalvia asked
on
Medium Priority
200 Views
Last Modified: 2010-04-01
Given a simple class like:

class Box {
    public:
    int a;
    int b;
};

int main() {
   Box b1;
   Box b2;
}

Are the following two statements effectively the same?  (i.e. do these statements generate the same exact machine code?)

b1 = b2;

memcpy(&b1, &b2, sizeof(Box));
Comment
Watch Question

CERTIFIED EXPERT
Top Expert 2006
Commented:
Hi chsalvia,

No ... memcpy would be a call (jump) to a library function. Assignment assembly code would be generated by compiler. Both implementations can be different.

Cheers!
sunnycoder

Not the solution you were looking for? Getting a personalized solution is easy.

Ask the Experts
Access more of Experts Exchange with a free account
Thanks for using Experts Exchange.

Create a free account to continue.

Limited access with a free account allows you to:

  • View three pieces of content (articles, solutions, posts, and videos)
  • Ask the experts questions (counted toward content limit)
  • Customize your dashboard and profile

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

OR

Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.