I'm only asking because I can't use it inside of a pragma(msg) call
since CTFE can't do C-style variadic functions yet. Is `format`
defined this way for performance reasons? (to avoid template bloat?)

On 2011-09-26 05:39, Andrej Mitrovic wrote:
> I'm only asking because I can't use it inside of a pragma(msg) call
> since CTFE can't do C-style variadic functions yet. Is `format`
> defined this way for performance reasons? (to avoid template bloat?)

std.string.format is using a D-style variadic parameter list. This would be a C-style variadic parameter list:

extern (C) string format (int c, ...);

It might just be an old function from D1 when template tuple parameters where not just that much.

-- 
/Jacob Carlborg

On 9/26/11, Jacob Carlborg <doob@me.com> wrote:
> std.string.format is using a D-style variadic parameter list.

The compiler disagrees with you:

D:\DMD\dmd2\windows\bin\..\..\src\phobos\std\string.d(2432): Error: function std.string.format C-style variadic functions are not yet implemented in CTFE

L2432:
string format(...)

I don't see any other format() overloads in std.string.

On Mon, 26 Sep 2011 08:42:09 -0400, Andrej Mitrovic <andrej.mitrovich@gmail.com> wrote:

> On 9/26/11, Jacob Carlborg <doob@me.com> wrote:
>> std.string.format is using a D-style variadic parameter list.
>
> The compiler disagrees with you:
>
> D:\DMD\dmd2\windows\bin\..\..\src\phobos\std\string.d(2432): Error:
> function std.string.format C-style variadic functions are not yet
> implemented in CTFE
>
> L2432:
> string format(...)
>
> I don't see any other format() overloads in std.string.

That's likely a bug.  D variadic functions push the TypeInfo of each parameter onto the stack as well as the parameters themselves.

Unfortunately, it's probably just a wrong error message, I doubt D variadic parameters are supported in CTFE.

-Steve

On 09/26/2011 07:42 AM, Andrej Mitrovic wrote:
> On 9/26/11, Jacob Carlborg <doob@me.com> wrote:
>> std.string.format is using a D-style variadic parameter list.
> 
> The compiler disagrees with you:
> 
> D:\DMD\dmd2\windows\bin\..\..\src\phobos\std\string.d(2432): Error: function std.string.format C-style variadic functions are not yet implemented in CTFE
> 
> L2432:
> string format(...)
> 
> I don't see any other format() overloads in std.string.

std.metastrings.Format wouldn't be what you want, would it?

On 2011-09-26 17:12, Steven Schveighoffer wrote:
> On Mon, 26 Sep 2011 08:42:09 -0400, Andrej Mitrovic
> <andrej.mitrovich@gmail.com> wrote:
>
>> On 9/26/11, Jacob Carlborg <doob@me.com> wrote:
>>> std.string.format is using a D-style variadic parameter list.
>>
>> The compiler disagrees with you:
>>
>> D:\DMD\dmd2\windows\bin\..\..\src\phobos\std\string.d(2432): Error:
>> function std.string.format C-style variadic functions are not yet
>> implemented in CTFE
>>
>> L2432:
>> string format(...)
>>
>> I don't see any other format() overloads in std.string.
>
> That's likely a bug. D variadic functions push the TypeInfo of each
> parameter onto the stack as well as the parameters themselves.
>
> Unfortunately, it's probably just a wrong error message, I doubt D
> variadic parameters are supported in CTFE.
>
> -Steve

Yes, that is not a C-style variadic function.

-- 
/Jacob Carlborg

On 9/26/11, Ellery Newcomer <ellery-newcomer@utulsa.edu> wrote:
> std.metastrings.Format wouldn't be what you want, would it?
>

Yep it is, Jonathan mentioned it above.

Hmm yea, the docs say so too. Sorry for the noise then. :)

On 09/26/2011 11:15 AM, Andrej Mitrovic wrote:
> On 9/26/11, Ellery Newcomer <ellery-newcomer@utulsa.edu> wrote:
>> std.metastrings.Format wouldn't be what you want, would it?
>>
> 
> Yep it is, Jonathan mentioned it above.

thunderbird hates me. second time I give an answer made redundant by orphaned subthread.

I'll counter by giving random unsolicited thoughts on Format:

don't use it for codegen (or any long format strings, I suppose). dmd
chokes on it very quickly.

format specifiers could use positional parameters or something. Last summer I actually wrote a Replace template to scratch that itch. dmd choked on it pretty quickly too.

Ellery Newcomer , dans le message (digitalmars.D.learn:29819), a écrit :
> On 09/26/2011 11:15 AM, Andrej Mitrovic wrote:
>> On 9/26/11, Ellery Newcomer <ellery-newcomer@utulsa.edu> wrote:
>>> std.metastrings.Format wouldn't be what you want, would it?
>>>
>> 
>> Yep it is, Jonathan mentioned it above.
> 
> thunderbird hates me. second time I give an answer made redundant by orphaned subthread.
> 

I've got the same problem with most of Jonathan's posts. I use flrn, an obsure news reader that nobody here probably knows about, so I thought it was just me. It seems that the Reference field in Jonathan's posts are unusual and break threads in some news reader.

Would anyone know a solution (either for Elley and me, or for Jonathan)?

-- 
Christophe