what's the different between a const version and mutable version member function

Posted by Yongwei Xing on Stack Overflow See other posts from Stack Overflow or by Yongwei Xing
Published on 2010-06-18T02:22:30Z Indexed on 2010/06/18 2:33 UTC
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c++

Hi all

I am very confused about the const version and mutable version member function like below::

value_type& top() { return this.item }
const value_type& top() const { return this.item }

What is the different these two functions? In what situation they would be used? Could someone give me some explanation about it?

Best Regards,

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what's the different between a const version and mutable version member function

c++

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