Casting delegates to void*

[Iain Buclaw]

On 13 March 2013 19:18, David Nadlinger <see at klickverbot.at> wrote:

> Hi all,
>
> A quick quiz: Does the following function compile, and if yes,
> what will it return?
>
> ---
> void* delegateToPtr(void delegate() dg) {
>     return cast(void*)dg;
> }
> ---
>
>
GDC's is also:

{
  return <retval> = dg.object;
}

I think it would be better to be explicit in the case though.

eg:
---
// Returns context.
void* delegateToPtr(void delegate() dg) {
    return cast(void*)dg.ptr;
}

// Returns function pointer.
void* delegateToPtr(void delegate() dg) {
    return cast(void*)dg.funcptr;
}
---

So you aren't left guessing which one it could be.


Regards
-- 
Iain Buclaw

*(p < e ? p++ : p) = (c & 0x0f) + '0';
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