Converting function pointers to delegates

[Artur Skawina]

On 04/14/14 19:51, Andrej Mitrovic wrote:
> On Monday, 14 April 2014 at 17:48:31 UTC, Adam D. Ruppe wrote:
>> On Monday, 14 April 2014 at 17:45:52 UTC, Ryan Voots wrote:
>>> src/yage/core/misc.d(164): Error: e2ir: cannot cast this of type S to type void*
>>
>>
>> Try taking the address of this before casting it. So more like
>>
>> cast(void*)&this
>>
>>
>> IIRC in D1 this was a pointer, whereas in D2 this is a reference. You can't cast a reference to pointer directly.
> 
> That's not true.
> 
> And I think the issue in his diagnostic is that he used it with a struct. You can't cast 'this' of a struct to a pointer (you'd have to use &this), but you can cast a class reference to a pointer.

It *is* true. Classes are /reference types/, not references to classes.
[There's no such thing as a "class payload" in D. Also, you can have a
 D-ref to a D-class.]

D doesn't have "true" references, just a storage-class based hack, that
only supports a small subset of ref functionality. But these pseudo-refs
still act as the objects they point to.

artur