GC-proof resource classes

[ponce via Digitalmars-d]

On Monday, 31 August 2015 at 12:54:05 UTC, Sebastiaan Koppe wrote:
> What about:
>
> ```
> class MyResource
> {
>     void* handle;
>     this()
>     {
>         handle = create_handle();
>     }
>     close()
>     {
>         if (handle)
>             free_handle(handle)
>         handle = null;
>     }
>     ~this()
>     {
>         enforce(!handle,"Resource leak");
>     }
> }
> ```



Unique!T destructor calls delete which calls ~this() not close()
RefCounted!T and scoped!T call .destroy which calls ~this() not 
close()
We really want one thing there.