Re: Iterators in Scheme?

[Niols]

Hello Jean-Julien,

On 29/07/2020 17:28, Jean-Julien Fleck wrote:
> Le mer. 29 juil. 2020 à 15:44, Niols <niols@niols.fr 
> <mailto:niols@niols.fr>> a écrit :
>
>
>      > What do you want to achieve?
>
>     This is actually follow-up research from my side after a previous
>     e-mail
>     to this list. I would like to print bar numbers that are "repeat
>     aware",
>     that is such that if bars 9 to 12 repeat twice, then the bar numbers go
>
>           1, 2, …, 9, …, 12, 17, 18, etc.
>
>     with a jump after 12 that corresponds to the bars 13 to 16 that are
>     actually 9 to 12. Even better, I would like to print the two bar
>     numbers
>     for these bars (9/13, 10/14, etc.)
>
>
> Perhaps this snippet could be of some use for you: 
> http://lsr.di.unimi.it/LSR/Item?id=1080

This is quite amazing!

This made me realise that my question is exactly the same as issue #5031 
[1]. The snippet you link is a workaround for this issue that does 
almost everything I am looking for. Also, it works in a way that is 
quite new to me, so understanding it will bring me quite a lot of 
interesting things; thank you!

[1] https://sourceforge.net/p/testlilyissues/issues/5031/

I will try to play with that and come back if I have more questions.

By default, I would also report back to the mailing-list, but I don't 
know if that is how it is done here. Do not hesitate to tell me if it is 
not the case on this mailing-list.

Best,
– Niols