For loop through dictionary of show rules to modify citations

[evmcha]

Hi all,
I’m trying to loop through a dictionary of Cyrillic/latinized author last names. The expected output is for instance “Antonova (2014)” given the base “Антонова (2014)”. This is not working as expected yet:

#let authors = (
  "Афанасьева": "Afanas'eva",
  "Антонова": "Antonova",
  "Керт": "Kert"
  )
#for (cyrauth,latauth) in authors {
  show cite: it => {
    show cyrauth: latauth
    it
  }
}

Worth noting is that the following does work, so it seems to be a problem with the for loop:

#show cite: it => {
    show "Антонова": "Antonova"
    it
  }

Edit:
After reworking the code a bit, I found this for-loop to work:

#show: cite => {
  for (cyrauth,latauth) in authors {
    cite = {
      show cyrauth: latauth
      cite
    }
  }
  cite
}

[ensko]

As mentioned on reddit, my other post shows the solution:

How can I create show rules in a loop?

(Credit for this answer goes to @laurmaedje who wrote it here, here, and a few times earlier on Discord, and to @Eric for recommending fold().) There is a general and two more specific ways to do this: using a loop or equivalent to generate and apply multiple show rules using regular expressions with alternatives (|) using selector.or() since the specific ways cover the most common use cases and are also better performance-wise, let’s start with these: Regular expressions The first two cas…

If you’re not sure how to apply that let us know what the struggle is. Right now it does not look like you tried to apply any of the techniques there, so I can’t tell what further support you’d need.

[evmcha]

My struggle is that I am not sure how to apply that post to a list of key:value pairs for a sort of find-and-replace result. The examples (unless I’m missing something) only show iterations through lists of single items that undergo a change.

[aarnent]

You can use .pairs() to get from a dictionary to an array:

#let authors = (
  "Афанасьева": "Afanas'eva",
  "Антонова": "Antonova",
  "Керт": "Kert"
)

#show cite: body => authors.pairs().fold(body, (body, (cyrillic, latin)) => {
  show cyrillic: latin
  body
})

[evmcha]

@aarnent

#show cite: body => authors.pairs().fold(body, (body, (cyrillic, latin)) => {
  show cyrillic: latin
  body
})

Amazing, thank you!