The Many Faces of D - slides

[Simen kjaeraas]

Max Samukha <spambox at d-coding.com> wrote:

> On 10/03/2010 10:47 PM, Walter Bright wrote:
>>
>> In D, all struct (and class) instances are, by definition, movable using
>> memcpy().
>>
>
> Structs are ok. Classes are not. Do you really want to forbid this use  
> case:
>
> class A
> {
>      private A _parent;
>      private A[] _children;
>
>      this(A parent)
>      {
>          if (parent !is null) {
>              _parent = parent;
> 	    _parent._children ~= this;
>          }
>      }
> }
>
> auto parent = new A;
> auto child = new A(parent);
>
> ?

I don't see how that is incompatible with what Walter said. Of course
one would need to update pointers to the moved classes.

-- 
Simen