Re: Workaround for (not-allowed) numbers in variable names?

[田村淳]

Hello David,

> gamme.1 is not a variable name.  It takes gamme to be an alist, and the
> entry under key 1 is what is addressed here.

Since you showed the Scheme equivalent below, I guess the above is a part of 
LilyPond syntax, or something the LilyPond parser does. Is that documented 
elsewhere? I’d like to know a bit more details.

Best regards,

Jun

> 2021/03/06 23:29、David Kastrup <dak@gnu.org>のメール:
> 
> Silvain Dupertuis <silvain-dupertuis@bluewin.ch> writes:
> 
>> I still checked this use of variable with numbers.
>> *Wonderful to see that it works.*
>> 
>> One important note, though:
>> If you use a numbered variable, _you cannot use the same variable
>> without an additional number_.
> 
> gamme.1 is not a variable name.  It takes gamme to be an alist, and the
> entry under key 1 is what is addressed here.
> 
> You can equivalently write gamme . #(- 3 2) for example.
> 
> In contrast, "gamme1" (referenced as \"gamme1") _is_ a single variable
> name.
> 
> As to converting numbers to roman numerals: what is wrong with
> 
> #(format #f "~@r" 547)
> 
> ?
> 
> -- 
> David Kastrup
>