Am 19.06.2021 um 12:30 schrieb Alan Painter alan.painter@xxxxxxxxx:
> *map:entry('out-of-print', true())[current()/@out-of-print eq 'true']*


*I think you would need to write e.g.*

*B  if (@out-of-print eq 'true') then map:entry('out-of-print', true())
else ()*

*
*

Or you would need to use a for expression to bind a "book" e.g.


 B  B  map {
 B  B  B  'books' : array {
 B  B  B  B  for $book in books/book return map:merge((
 B  B  B  B  B  map:entry('title', B  B  B B  $book!title !string() B  ),
 B  B  B  B  B  map:entry('authors', B  B  B array { $book!author!string() }
),
*B  B  B  B  B B map:entry('out-of-print', true())[$book/@out-of-print eq
'true']*
 B  B  B  B  ))
 B  B  B  }
 B  B  }