Re: [Boost-users] How to simplify repetetive constructor calls?

From: Joel Falcou (joel.falcou_at_[hidden])
Date: 2008-06-05 07:38:04

Zeljko Vrba a écrit :
> I have a following situation:
> 
> class X {
>   type1 v1;
>   type2 v2;
>   ...
>   typen vn;
>   other_var ...
> public:
>   X() : v1(this), v2(this), .., vn(this), other_var(1, 2, 3)
>   { }
> };
> 
> I'm looking for suggestions on how to automatically initialize
> variables v1..vn with "this" being passed as the only argument
> to their constructor.  In the ideal case, the programmer should
> not need to specify any constructor calls for v1..vn, so that
> the end result looks something like:
> 
> class X {
>   type1 v1; ... typen vn;
>   other_var;
> public:
>   X() : other_var(1, 2, 3)
>   {
>     // some "magic" arranges that v1(this) .. vn(this) is called
>   }
> };

Can't a boost::tuple<v1,v2..,vn> with a custom, recursive constructor 
function do the trick ?