Ohhh, thank you so much, Sorawee! Now I have wealth of code to study.
By the way, I tried to send my full code but apparently once again I hit
the "reply" button instead of "reply all" and I only sent it to David, so
here it is again in case anyone wants to play with it. I haven't
implemented
>
> 2) (card (line . xs)) has only one field, xs. Of course, you could also
> define it as a normal field which contains a list, but there's some other
> scenarios where I found it more elegant to represent it as a dotted
> argument (like representing s-expressions as a struct).
>
Oh sorry, that
Thanks, I'll take a look into the code struct++! I'll probably get lost but
I'm sure I'll learn something.
Answering your questions:
A) What exactly are you trying to do, because I think I've got it but I'm
>>> still fuzzy.
>>>
>>
Structs that allow constructors like any other function, and
Oops, noted, I have to use 'reply all'. In the benefit of context I'll post
again my reply to Sorawee:
Short summary: I'm trying to have a macro (mymacro oldname newname (fields
...)) that accesses oldname-foo, which contains a list of symbols, and then
define a function that takes (cons
Additional thought and self-plug: My struct-plus-plus module creates
structures with full reflection information available, including field
names, contracts, and wrappers. It also supports type checking, data
normalization, default values, and automatically provides both keyword
constructors and
NB: You did a 'reply' to Sorawee instead of to the list as a whole, and
also the same for the email I sent. Probably good to 'reply all' so that
the list gets the full context.
Sorawee offered some good advice on how to do the things you're asking
about and asked relevant questions. I'm
Instead of creating hola-fields which exists at run-time, you can
(define-syntax
hola ...) to a struct containing the field information at compile-time (it
probably needs to contain other information too). The struct could have
prop:procedure which in this case will be the syntax transformer that
Sorawee answered your immediate question, but I figured I'd offer a pointer
to Fear of Macros in case you haven't seen it:
https://www.greghendershott.com/fear-of-macros/ It helped me a lot when I
was trying to get my head around macros. Also, I got a lot of value from
reading through the code
In general, it would be helpful to provide an example of the macro use, so
that we know what you want to do. If it doesn't work, it would be helpful
to provide the buggy program and an error message so that we can help with
the issue that you are encountering.
>From my guess, you have a variable
(sorry if I'm asking too many questions about macros lately, I'm learning
about them but I keep running into scenarios I can't find documentation for)
I'm trying to capture the value of a variable whose identifier I can only
get with format-id, inside a with-syntax.
Something like this pseudocode
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