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Why const and non-const?

In std::stack<>, why are both const and non-const versions of top()
necessary? Wouldn't only the const version suffice? This could be called
on either a const or non-const stack object and, in either case, this method
does indeed not modify the stack it is a part of...
Jul 22 '05 #1
1 1175
"Dave" <be***********@yahoo.com> wrote in message
news:10*************@news.supernews.com...
In std::stack<>, why are both const and non-const versions of top()
necessary? Wouldn't only the const version suffice? This could be called
on either a const or non-const stack object and, in either case, this method does indeed not modify the stack it is a part of...


The non-const version returns a non-const reference to the top of the stack
which allows the caller to change it at will.

--
Cy
http://home.rochester.rr.com/cyhome/
Jul 22 '05 #2

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