Re: [boost] Questions on Serialization

From: Daryle Walker (darylew_at_[hidden])
Date: 2005-08-24 08:51:01

On 8/23/05 11:44 AM, "Robert Ramey" <ramey_at_[hidden]> wrote:

> Daryle Walker wrote:
[SNIP]
>> If the latter is the answer, then does:
>> 
>>    class my_type {
>>        friend class ::boost::serialization::access;
>>        //...
>>    };
>> 
>> need a forward (or full) declaration for "access" before it?  Or does
>> that only apply to template functions (or is it just template
>> operators)[1]?
> 
> If I understand this correctly, the friend declaration could be restricted
> to a couple of functions.  But compilers are all over the place as to they
> way they handle this and the above is easy to remember and seems to work
> well.  Of course, you're free to use a more elaborate one for your own
> classes.
[TRUNCATE]

No, you misunderstood.  I didn't mean to ask what I should be friendly to,
but can I reference "access" without preamble.  (I guess you meant that I
could restrict friendliness to some member functions of "access".)  Could I
do:

    // This is the first line of the file

    class my_type {
        friend class ::boost::serialization::access;
        //...
    };

or do I need to do:

    // This is the first line of the file

    #include <boost/serialization_fwd.hpp>  // I'm guessing the name

    class my_type {
        friend class ::boost::serialization::access;
        //...
    };

or:

    // This is the first line of the file

    #include <boost/serialization/access.hpp>  // I'm guessing the name

    class my_type {
        friend class ::boost::serialization::access;
        //...
    };

?  It's actually more of a "rules of C++" question; the section on friends
in the standard isn't too clear here.

-- 
Daryle Walker
Mac, Internet, and Video Game Junkie
darylew AT hotmail DOT com