How can I "set" a default value for an exist custom function parameter?

Questions
1

Hi,
specifically I have this:

#import "@preview/physica:0.9.5": *
$ dd(x,y,p:and) $

I want to “set” (?) the “p:and” as the default so that I can write:

$ dd(x,y) $

Would someone be so kind as to tell me how to do this?

2

Hi! I’ve changed your post’s title to hopefully make it more easy to understand from the topic list.

The tool for doing this would be with:

#import "@preview/physica:0.9.5": *
#let dd = dd.with(p: $and$)
$ dd(x, y) $
$ dd(x, y, p: or) $

With built-in function you’d use a set rule, but those don’t work for custom ones like the ones from physica.

Note that if you have multiple files, you have to do this in every file. A way around this could be making your own wrapper module, like this:

// physica.typ
#import "@preview/physica:0.9.5": *
#let dd = dd.with(p: $and$)

// main.typ
#import "physica.typ": *
$ dd(x, y) $
$ dd(x, y, p: or) $

(this can be useful anyway, because you can’t accidentally import two different versions of physica when you only import it once anyway)

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