Re: Parametric variables?

[Tomas Valusek]

Hello,

thanks for answer. I tried my best, but I don't understand what's wrong. 
 I have slightly modified last example in NR 6.1.2 like this:

fng = #(define-music-function (parser location marktext) (string?)
#\markup {\finger $marktext}
#)

{<c' d'>1^\fng #"2\n1"}

And a resulting log looks like this:

# -*-compilation-*-
Processing `I:/Documents and Settings/Tom/Plocha/prsoklad.ly'
Analyzuji...
I:/Documents and Settings/Tom/Plocha/prsoklad.ly:1:10: error: GUILE 
signaled an error for the expression beginning here
fng = #
          (define-music-function (parser location marktext) (string?)

I:/Documents and Settings/Tom/Plocha/prsoklad.ly:1:17: error: syntax 
error, unexpected '-', expecting '='
fng = #(define
                 -music-function (parser location marktext) (string?)

I:/Documents and Settings/Tom/Plocha/prsoklad.ly:2:1: error: GUILE 
signaled an error for the expression beginning here
#
 \markup {\finger $marktext}

I:/Documents and Settings/Tom/Plocha/prsoklad.ly:2:10: error: neznámá 
escape sekvence: `\finger'
#\markup {
          \finger $marktext}

I:/Documents and Settings/Tom/Plocha/prsoklad.ly:3:1: error: GUILE 
signaled an error for the expression beginning here
#
 )

I:/Documents and Settings/Tom/Plocha/prsoklad.ly:2:9: error: errors 
found, ignoring music expression
#\markup
         {\finger $marktext}

I:/Documents and Settings/Tom/Plocha/prsoklad.ly:5:10: error: syntax 
error, unexpected SCM_IDENTIFIER
{<c' d'>1^
          \fng #"2\n1"}I:/Documents and 
Settings/Tom/Plocha/prsoklad.ly:5:0: error: errors found, ignoring music 
expression

{<c' d'>1^\fng #"2\n1"}I:/Documents and 
Settings/Tom/Plocha/prsoklad.ly:0: varování: : no \version statement 
found, please add

\version "2.12.2"

for future compatibility
error: failed files: "I:\\Documents and Settings\\Tom\\Plocha\\prsoklad.ly"

I don't understand anything from it. How to modify my file so that it 
works as expected?

Tomas Valusek

Graham Percival napsal(a):
> On Sat, Mar 14, 2009 at 03:59:13PM +0100, Tomas Valusek wrote:
> > Is it possible without diving into Scheme?
>
> No.
>
> > That is - is it possible to  have "parametrized" variables,
> > which could take an expression as a  parameter?
>
> This is possible with Scheme.  Depending on what exactly you want
> to do, it could be very simple.
>
> See the relevant chapter of the Notation Reference; it starts off
> with very simple examples.
>
> Cheers,
> - Graham