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Hallo,

I would like to know the status of the standard C++ proposal P0309R0
("Partial Class") that I sent some months ago, currently visible at
this address:

http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0309r0.pdf

Has it been discussed?
Was something decided about it?
Thank you very much in advance!

Best regards,
Daniele Bordes

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<span style=3D"color:rgb(34,34,34);font-size:14px">Hallo,</span><br style=
=3D"color:rgb(34,34,34);font-size:14px"><br style=3D"color:rgb(34,34,34);fo=
nt-size:14px"><span style=3D"color:rgb(34,34,34);font-size:14px">I would li=
ke to know the status of the standard C++ proposal P0309R0</span><br style=
=3D"color:rgb(34,34,34);font-size:14px"><span style=3D"color:rgb(34,34,34);=
font-size:14px">(&quot;Partial Class&quot;) that I sent some months ago, cu=
rrently visible at</span><br style=3D"color:rgb(34,34,34);font-size:14px"><=
span style=3D"color:rgb(34,34,34);font-size:14px">this address:</span><br s=
tyle=3D"color:rgb(34,34,34);font-size:14px"><br style=3D"color:rgb(34,34,34=
);font-size:14px"><a href=3D"http://www.open-std.org/jtc1/sc22/wg21/docs/pa=
pers/2016/p0309r0.pdf" target=3D"_blank" style=3D"font-size:14px">http://ww=
w.open-std.org/jtc1/<wbr>sc22/wg21/docs/papers/2016/<wbr>p0309r0.pdf</a><br=
 style=3D"color:rgb(34,34,34);font-size:14px"><br style=3D"color:rgb(34,34,=
34);font-size:14px"><span style=3D"color:rgb(34,34,34);font-size:14px">Has =
it been discussed?</span><br style=3D"color:rgb(34,34,34);font-size:14px"><=
span style=3D"color:rgb(34,34,34);font-size:14px">Was something decided abo=
ut it?</span><br style=3D"color:rgb(34,34,34);font-size:14px"><span style=
=3D"color:rgb(34,34,34);font-size:14px">Thank you very much in advance!</sp=
an><br style=3D"color:rgb(34,34,34);font-size:14px"><br style=3D"color:rgb(=
34,34,34);font-size:14px"><span style=3D"color:rgb(34,34,34);font-size:14px=
">Best regards,</span><br style=3D"color:rgb(34,34,34);font-size:14px"><spa=
n style=3D"color:rgb(34,34,34);font-size:14px">Daniele Bordes</span>

<p></p>

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.

On 13 September 2016 at 22:33, Daniele Bordes <daniele.bordes@gmail.com> wrote:
> Hallo,
>
> I would like to know the status of the standard C++ proposal P0309R0
> ("Partial Class") that I sent some months ago, currently visible at
> this address:
>
> http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0309r0.pdf
>
> Has it been discussed?
> Was something decided about it?
> Thank you very much in advance!


It was discussed in Oulu, pardon for the failure to convey the
feedback all the way to the proposal author.

Some polls:
Do we think we want a mechanism for forward-declaring the public
interface of a class? 0 | 1 | 11 | 5 | 0
Encourage more work on P0309r0? 0 | 0 | 3 | 6 | 7

Some quotes from the discussion:
"This actually has the performance cost that PImpl has in that you
have to have an inline function definition for some methods (e.g.,
isEmpty) if you don't want a performance cost. And nested classes.
This doesn't work. "
"Changing the head of the class has a very high bar. "

In other words, Evolution was unconvinced by the proposal.

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.