Readdlm, comments=true instead of false

Wouldn’t that be better? This would allow adding (commented) information to the end of a data file, without having to change the code.

Maybe, if other software did it that way, or this one from the start. It seems though that read.csv in R doesn’t use comments (since it’s faster, at least for them), nor does CSV.jl (that you likely should use; or Arrow.jl), though read.table defaults to supporting comments. I didn’t check the default in Pandas.

CSV files aren’t standardized, but it was tried, and that RFC does not officially support comments, likely why the default isn’t to skip them:

CSV is “awful”, “CSV++” is a proposal (or just use a proper standard like, Arrow):

OK Palli, thank you.