Hi @Hlaaftana, @mratsim, Thank you for both the elaborate answers, really appreciated. I actually had a look object variants but was turned off by the different field names, but judging from your answers it seems that it is the best approach.
@Hlaaftana, the typeinfo.Any variant is interesting but perhaps not ideal. @mratsim, I am using the json module but not very effectively it seems. I was planning on using NimData as final object and the rows to build the columns. Also, appreciate the mention of the performance costs of both approaches. @both, thanks again. The whole no heterogeneous data structures takes a bit of change in mindset.
