INTELLIGENT WORK FORUMS
FOR COMPUTER PROFESSIONALS

Member Login




Remember Me
Forgot Password?
Join Us!

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

Join Tek-Tips
*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.
Jobs from Indeed

Link To This Forum!

Partner Button
Add Stickiness To Your Site By Linking To This Professionally Managed Technical Forum.
Just copy and paste the
code below into your site.

operator overloading ->

operator overloading ->

(OP)
T& operator*(){return *ptr;}
T& operator->(){return ptr);

Why do we return in one case *ptr and in other case ptr whereas return in both cases is a reference.

RE: operator overloading ->

operator-> should specify T* as its return type, not T&.

RE: operator overloading ->

(OP)
Why?
I am having hard time to figure out when we need * or & in return type.

RE: operator overloading ->

Honestly, I don't know. That's just how it works. I took a quick look in the standard to see if I could find an explanation or specific mention, but none could be found.

For cases like these where there is a common usage, I would just use examples from reference material to identify the proper form.

RE: operator overloading ->

You return * when you need a pointer and & when you need a reference.  This only starts making sense when it appears on the left of an assignment.


 

RE: operator overloading ->

(OP)
Thank you!
Now I am reading C++ Primer book and it makes sense what you wrote.

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members!

Resources

Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close