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Re: Music functions with pitch and duration arguments
From: |
David Kastrup |
Subject: |
Re: Music functions with pitch and duration arguments |
Date: |
Fri, 22 Jul 2011 08:32:39 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) |
Han-Wen Nienhuys <address@hidden> writes:
> On Thu, Jul 21, 2011 at 10:01 PM, David Kastrup <address@hidden> wrote:
>> Anyway, this is not particularly complex either. Could possibly pave
>> the way for a nicer function for setting up strings for tabulatures.
>> Also stuff like \transpose can be implemented by users with a
>> straightforward syntax accepting just pitches where pitches are asked
>> for, without the user needing to disassemble music in order to get at
>> the pitch somewhere in the center of the mess.
>
> It would be awesome to implement \transpose (and relative, for that
> matter) as a music function.
Not likely a speed gain. But it might be nice to have this available
for other user-defined material.
>> What do people think? I've not yet bothered with markup, though things
>> like \note would be better off taking a duration argument rather than an
>> integer.
>
> The patch looks neat. I don't see any obvious problems, but are you
> sure it compiles?
Yes. The error message I quoted for a bad signature was not invented.
> It seems to be missing the init for the _proc variables you added,
> though.
No. They are created by the existing calls of IMPLEMENT_TYPE_P in
pitch.cc and duration.cc and initialized there.
> Can you use ly_lily_module_constant? It memoizes, so it is efficient.
Where is the point? The respective variables _are_ initialized and set
with the pristine values of the type checking functions. Memoization
can't be faster than that, I should think.
It could conceivably make a difference when the user masks the
definitions of ly:pitch? or ly:duration? (merely setting them to
different values should not be a problem) but that's not really
something I want to think about too much.
--
David Kastrup
- Creates a glissando stem grob that uses stems' functionality. (issue4777044), mtsolo, 2011/07/20
- Re: Creates a glissando stem grob that uses stems' functionality. (issue4777044), n . puttock, 2011/07/20
- Re: Creates a glissando stem grob that uses stems' functionality. (issue4777044), address@hidden, 2011/07/20
- Music functions with pitch and duration arguments (was: Creates a glissando stem grob that uses stems' functionality. (issue4777044)), David Kastrup, 2011/07/21
- Re: Music functions with pitch and duration arguments (was: Creates a glissando stem grob that uses stems' functionality. (issue4777044)), Han-Wen Nienhuys, 2011/07/21
- Re: Music functions with pitch and duration arguments,
David Kastrup <=
- Re: Music functions with pitch and duration arguments, Han-Wen Nienhuys, 2011/07/22
- Re: Music functions with pitch and duration arguments, David Kastrup, 2011/07/22
- Review music functions with pitch and duration arguments (was: Music functions with pitch and duration arguments), David Kastrup, 2011/07/22
- Re: Review music functions with pitch and duration arguments, David Kastrup, 2011/07/23
- Re: Review music functions with pitch and duration arguments, David Kastrup, 2011/07/24
- RE: Review music functions with pitch and duration arguments, James Lowe, 2011/07/24
- Re: Review music functions with pitch and duration arguments, David Kastrup, 2011/07/24
- Re: Review music functions with pitch and duration arguments, Valentin Villenave, 2011/07/24
- Re: Review music functions with pitch and duration arguments, Werner LEMBERG, 2011/07/24
- Re: Review music functions with pitch and duration arguments, David Kastrup, 2011/07/24