Re: [boost] [intrusive] Interface for hooking into client code improvable?

From: Mathias Gaunard (mathias.gaunard_at_[hidden])
Date: 2007-08-10 10:47:23

Olaf Krzikalla wrote:

> // Ok, let's try non-intrusive Intrusive  ;-)
> 
> typedef std::map<bar*,intrusive::slist_node_mgmt_data<bar> > bar_chainer;
> 
> struct bar_mgmt
> {
>    bar_chainer& bar_management_;
>    bar_mgmt(bar_chainer& b) : bar_management_(b) {}
> 
>    slist_node_mgmt_data<bar>& operator()(bar& that)
>    {
>        return bar_management_[&that];
>    }
> };
> 
> void bar_test()
> {
>    // now a local variable is feasible:
>    std::map<bar*,intrusive::slist_node_mgmt_data<bar> > bar_management;
> 
>    intrusive::slist<bar, bar_mgmt> my_list(bar_mgmt(bar_management));
>    // aso.
> }
> 
> //--------------------------------------
> 
> Something along those lines. Of course the user is now responsible for 
> the proper lifetime management of bar_management. But I don't consider 
> this to be an big issue as it is a typically problem of functors 
> containing references.

Why not make the bar_management a static member of the function objet, 
rather?