Hello List.

I've been trying to typeset a somewhat complex list of authors for several
articles and a book.
My proof of concept seems to work fine, however, I know I am doing weird
things that I think could probably be done in a better way. I'm using
datasets and a recursion, kind of hacky but I can't find a better way of
handling it. Specifically I would like to know:
1. Is there a way of getting the length of a filled dataset? (how many
entries it contains)
2. Is it OK to use \startuserdata \stopuserdata without its inlineuserdata?
Is there an alternative that does not require inlineuserdata?

%%%%%%%%%% MWE:
\setupinteraction[state=start]

\define[2]\imghref{\bgroup\goto{#1}[url(#2)]\egroup}
\defineexternalfigure[logo][height=1em]

\definedataset[autores]

\setdataset[autores][
  nombre={Angie Natalia Farfán Acevedo},
  cvlac={
https://scienti.minciencias.gov.co/cvlac/visualizador/generarCurriculoCv.do?cod_rh=0002125949
},
  orcid={https://orcid.org/0009-0007-0765-4241},
  gscholar={
https://scholar.google.com/citations?user=GpYTTU0AAAAJ&hl=es&authuser=1},
]
\setdataset[autores][
  nombre={Ivon Andrea Rodríguez Román}
  cvlac={
https://scienti.minciencias.gov.co/cvlac/visualizador/generarCurriculoCv.do?cod_rh=0000027033
}
  orcid={https://orcid.org/0009-0001-1183-6829}
  gscholar={https://scholar.google.com/citations?user=iz8SQNcAAAAJ&hl=es}
]
\setdataset[autores][
  nombre={Angie Caterin Garzón González}
  cvlac={
https://scienti.minciencias.gov.co/cvlac/visualizador/generarCurriculoCv.do?cod_rh=0002128501
}
  orcid={https://orcid.org/0009-0009-0990-6902}
  gscholar={
https://scholar.google.com/citations?view_op=list_works&hl=es&user=5WqcOeEAAAAJ
}
]
\setdataset[autores][
  nombre={Heidy Paola Veira Tenorio}
  cvlac={
https://scienti.minciencias.gov.co/cvlac/visualizador/generarCurriculoCv.do?cod_rh=0002127550
}
  orcid={https://orcid.org/0009-0008-4076-7317}
  gscholar={
https://scholar.google.es/citations?view_op=new_profile&hl=es&authuser=1}
]
\setdataset[autores][
  nombre={Yerly Lorena Diaz Aldana}
  cvlac={
https://scienti.minciencias.gov.co/cvlac/visualizador/generarCurriculoCv.do?cod_rh=0002127754
}
  orcid={https://orcid.org/0009-0008-1720-4057}
  gscholar={
https://scholar.google.com/citations?hl=es&user=0obyCwkAAAAJ&view_op=list_works&gmla=AOV7GLPWRTK-xooHNe0iQ3uubfcSbG__GY_Guy35FdaqDJA3OfLLtp01-E1kzjxUhltlsfj494MaoQFkk9U9hCFYSipoR8aX0Vu2E6sV
}
]

\defineuserdataalternative[idautor][renderingsetup=userdata:idautor]

\startsetups[userdata:idautor]
  \dontleavehmode
  \imghref
    {\externalfigure[cvlac.pdf][logo]}
    {\userdataparameter{cvlac}}
    \quad
  \imghref
    {\externalfigure[orcid.pdf][logo]}
    {\userdataparameter{orcid}}
    \quad
  \imghref
    {\externalfigure[gscholar.pdf][logo]}
    {\userdataparameter{gscholar}}
    \quad
  \userdataparameter{author}\par
\stopsetups

\defineuserdata[idautor][alternative=idautor]

\startdocument
  % I have to manually set the length of the dataset in the loop and use
recurselevel...
  % Maybe there is a way to use the length of the "autores" dataset? and
use indexes?
  \dorecurse{5}{
    \startuserdata[idautor][
      author={\datasetvariable{autores}{\recurselevel}{nombre}},
      cvlac={\datasetvariable{autores}{\recurselevel}{cvlac}},
      orcid={\datasetvariable{autores}{\recurselevel}{orcid}},
      gscholar={\datasetvariable{autores}{\recurselevel}{gscholar}},
    ]\stopuserdata % My "inlineuserdata" is empty... no idea if this is
OK...
  }
\stopdocument
%%%%%%%%%% END MWE

Thank you in advance.

-- 
Andrés Conrado Montoya
Andi Kú
andresconrado@gmail.com
http://sesentaycuatro.com
http://messier87.com
http://chiquitico.org
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Los fines no justifican los medios, porque la medida verdadera de nuestro
carácter está dada por los medios que estamos dispuestos a utilizar, no por
los fines que proclamamos.
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“You develop an instant global consciousness, a people orientation, an
intense dissatisfaction with the state of the world, and a compulsion to do
something about it. From out there on the moon, international politics look
so petty. You want to grab a politician by the scruff of the neck and drag
him a quarter of a million miles out and say, ‘Look at that, you son of a
bitch.’” — Apollo 14 astronaut Edgar Mitchell