• Bill Baxter (11/11) Nov 06 2009 To Don, Walter, or anyone else who knows:
• Daniel Keep (12/23) Nov 06 2009 I just wrote my own.
• Bill Baxter (16/38) Nov 06 2009 It just occurred to me when I woke up this morning that it should be
• Daniel Keep (3/9) Nov 06 2009 The license should be compatible with Boost; I changed it yesterday so
• grauzone (2/6) Nov 06 2009 You just have to wait until all D features are fully implemented in CTFE...

Bill Baxter <wbaxter gmail.com> writes:

To Don, Walter, or anyone else who knows:
How hard is it going to be to get variadic CTFE functions working?
Or how hard would it be to get

std.metastrings.Format should be a major workhorse of CTFE string
functions, but it can't be because it's all done using template args.
And I'm assuming it's a template because variadic CTFE funcs don't work.


In general, it would be nice to have more std.string functions
available (as CTFE-capable functions) in std.metastrings.  Like
Replace and IndexOf.  I whipped up a quick version of those two based
somewhat on std.strings' versions just now.

--bb

Daniel Keep <daniel.keep.lists gmail.com> writes:

Bill Baxter wrote:
 To Don, Walter, or anyone else who knows:
 How hard is it going to be to get variadic CTFE functions working?
 Or how hard would it be to get
 
 std.metastrings.Format should be a major workhorse of CTFE string
 functions, but it can't be because it's all done using template args.
 And I'm assuming it's a template because variadic CTFE funcs don't work.

I just wrote my own.

http://github.com/DanielKeep/gb/blob/master/src/gb/ctfe/Format.d

Takes metastrings.Format out back and beats it black and blue before
putting a silly hat on its head and dropping a cream pie down the front
of its trousers.

 In general, it would be nice to have more std.string functions
 available (as CTFE-capable functions) in std.metastrings.  Like
 Replace and IndexOf.  I whipped up a quick version of those two based
 somewhat on std.strings' versions just now.

Again, I just add stuff as I need it.

http://github.com/DanielKeep/gb/blob/master/src/gb/ctfe/String.d

I remember Walter talking about how CTFE meant you wouldn't need
distinct runtime and compile-time libraries.

Oh, how I chuckle.

  -- Daniel

Bill Baxter <wbaxter gmail.com> writes:

On Fri, Nov 6, 2009 at 5:58 AM, Daniel Keep <daniel.keep.lists gmail.com> w=
rote:
 Bill Baxter wrote:
 To Don, Walter, or anyone else who knows:
 How hard is it going to be to get variadic CTFE functions working?
 Or how hard would it be to get

 std.metastrings.Format should be a major workhorse of CTFE string
 functions, but it can't be because it's all done using template args.
 And I'm assuming it's a template because variadic CTFE funcs don't work.

 I just wrote my own.

 http://github.com/DanielKeep/gb/blob/master/src/gb/ctfe/Format.d

 Takes metastrings.Format out back and beats it black and blue before
 putting a silly hat on its head and dropping a cream pie down the front
 of its trousers.

It just occurred to me when I woke up this morning that it should be
possible to use a templated variadic function for Format instead of a
template.  And looks that like what you're doing.  That's a much
better approach.  I guess the only down side is that the CTFE memory
leaks still exists.  But anyway, would you be willing to make your
code available under the Boost license so it can be used in Phobos?

 In general, it would be nice to have more std.string functions
 available (as CTFE-capable functions) in std.metastrings. =A0Like
 Replace and IndexOf. =A0I whipped up a quick version of those two based
 somewhat on std.strings' versions just now.

 Again, I just add stuff as I need it.

 http://github.com/DanielKeep/gb/blob/master/src/gb/ctfe/String.d

Yeh, ok, but the point of this message was that it would be nice to
have something better in Phobos so everyone doesn't have to roll their
own.


 I remember Walter talking about how CTFE meant you wouldn't need
 distinct runtime and compile-time libraries.

 Oh, how I chuckle.

Yeh.  It seems unlikely that things like throwing exceptions will be
supported in CTFE any time soon.  So it would be nice to have a
collection of string processing functions that do work CTFE in
std.metastrings.

--bb

Daniel Keep <daniel.keep.lists gmail.com> writes:

Bill Baxter wrote:
 It just occurred to me when I woke up this morning that it should be
 possible to use a templated variadic function for Format instead of a
 template.  And looks that like what you're doing.  That's a much
 better approach.  I guess the only down side is that the CTFE memory
 leaks still exists.  But anyway, would you be willing to make your
 code available under the Boost license so it can be used in Phobos?

The license should be compatible with Boost; I changed it yesterday so
Eldar could use it for something.

grauzone <none example.net> writes:

Daniel Keep wrote:
 I remember Walter talking about how CTFE meant you wouldn't need
 distinct runtime and compile-time libraries.
 
 Oh, how I chuckle.

You just have to wait until all D features are fully implemented in CTFE.