Re: newbie: help with Scheme functions

[Aaron Hill]

On 2020-10-18 1:38 pm, Dave Seidel wrote:
> Very cool, thanks! I'm curious -- could aBook and aBookPart have been
> written as a lambda, or is it cleaner to use a void function?

(Re-adding the mailing list on the thread for visibility.)

To get the benefits of LilyPond's Scheme functions, you would need to 
use one of the define-*-function family.  Since it is our intention here 
not to return any value, we use the void function.

If you do not need any parameters, you can certainly invoke procedures 
like print-book-with-defaults or ly:book-add-bookpart! without wrapping 
them in a function.  Though, without parameterization, I would wonder 
why you could not just use \book or \bookpart directly.


-- Aaron Hill