• strtr <strtr sp.am> Jul 21 2010
• Ellery Newcomer <ellery-newcomer utulsa.edu> Jul 21 2010
• strtr <strtr sp.am> Jul 21 2010
• Don <nospam nospam.com> Jul 21 2010
• BCS <none anon.com> Jul 22 2010
• Jonathan M Davis <jmdavisprog gmail.com> Jul 22 2010
• "Steven Schveighoffer" <schveiguy yahoo.com> Jul 22 2010

strtr <strtr sp.am> writes:

Could somebody please explain this error to me.

----
import std.uni : toUniUpper;
import std.string : capitalize;

void main()
{
	const char[] name = `test`;

	// C:\dmd\src\phobos\std\string.d(983): Error: _aApplycd2 cannot be
interpreted at compile time, because it has no available source code
	const char[] name_c = capitalize(name);

	// my partial solution
	const char[] name_c2 = cast(char)toUniUpper(name[0]) ~ name[1..$];
}
----

Ellery Newcomer <ellery-newcomer utulsa.edu> writes:

On 07/21/2010 09:09 PM, strtr wrote:
 Could somebody please explain this error to me.


evidently ctfe can't eat

foreach(i, dchar d; s){
}

Bleach. Make sure it's in bugzilla.

strtr <strtr sp.am> writes:

== Quote from Ellery Newcomer (ellery-newcomer utulsa.edu)'s article
 On 07/21/2010 09:09 PM, strtr wrote:
 Could somebody please explain this error to me.


 foreach(i, dchar d; s){
 }
 Bleach. Make sure it's in bugzilla.


found it:
http://d.puremagic.com/issues/show_bug.cgi?id=3512

Don <nospam nospam.com> writes:

Ellery Newcomer wrote:
 On 07/21/2010 09:09 PM, strtr wrote:
 Could somebody please explain this error to me.


 evidently ctfe can't eat
 
 foreach(i, dchar d; s){
 }
 
 Bleach. Make sure it's in bugzilla.


CTFE currently doesn't work on *any* functions which are implemented in 
druntime, because it doesn't have access to their source code.

BCS <none anon.com> writes:

Hello Don,

 Ellery Newcomer wrote:
 
 On 07/21/2010 09:09 PM, strtr wrote:
 
 Could somebody please explain this error to me.
 


 
 foreach(i, dchar d; s){
 }
 Bleach. Make sure it's in bugzilla.
 


 in druntime, because it doesn't have access to their source code.
 


Why don't they have access?

-- 
... <IXOYE><

Jonathan M Davis <jmdavisprog gmail.com> writes:

On Thursday, July 22, 2010 06:53:30 BCS wrote:
 Hello Don,
 
 Ellery Newcomer wrote:
 On 07/21/2010 09:09 PM, strtr wrote:
 Could somebody please explain this error to me.


 evidently ctfe can't eat
 
 foreach(i, dchar d; s){
 }
 Bleach. Make sure it's in bugzilla.


 CTFE currently doesn't work on *any* functions which are implemented
 in druntime, because it doesn't have access to their source code.


 Why don't they have access?


All you have for druntime are .di files (so basically header files rather than 
full-on source files) and the library file with the compiled source, so you
don't 
have the source. Now, as to _why_ that's all you have, I don't know (the .d
files 
come with phobos). But you need the .d files for the full source, and without 
them, you won't be able to use CTFE with the functions in them.

- Jonathan M Davis

"Steven Schveighoffer" <schveiguy yahoo.com> writes:

On Thu, 22 Jul 2010 13:25:04 -0400, Jonathan M Davis  
<jmdavisprog gmail.com> wrote:

 On Thursday, July 22, 2010 06:53:30 BCS wrote:
 Hello Don,

 Ellery Newcomer wrote:
 On 07/21/2010 09:09 PM, strtr wrote:
 Could somebody please explain this error to me.


 evidently ctfe can't eat

 foreach(i, dchar d; s){
 }
 Bleach. Make sure it's in bugzilla.


 CTFE currently doesn't work on *any* functions which are implemented
 in druntime, because it doesn't have access to their source code.


 Why don't they have access?


 All you have for druntime are .di files (so basically header files  
 rather than
 full-on source files) and the library file with the compiled source, so  
 you don't
 have the source. Now, as to _why_ that's all you have, I don't know (the  
 .d files
 come with phobos). But you need the .d files for the full source, and  
 without
 them, you won't be able to use CTFE with the functions in them.


Well, it's somewhat different than that.  For something like foreach(i,  
dchar d; s), the compiler recognizes this as a special runtime function  
and replaces it with a call to the special function that handles that.  I  
don't think the code for running it is any .di file in druntime.

-Steve