save.ffdf produces an error " NA were not saved, because not found" if you are using it in a list

[phowerter]

Hello,
I organize my ffdf files in llists but the ffdf.save function returns and error if I pass it an ffdf object that is within a list.
NA were not saved, because not found

here is an example
myList <- list(test = 1, test2 = 2)
myList$test <- as.ffdf(data.frame(dummy1 = c(1,2), dummy2 = c(1,2)))
save.ffdf(myList$test)

This is because of the line:
names <- as.character(substitute(list(...)))[-1L]

The thing is, this function actually work in this case. It just return a warning message with an error.
Can you figure out a way to get rid of this?

Thanks,
Patrick

[jwijffels]

you could write a wrapper around save.ffdf
e.g. save.ffdflist and load.ffdflist to do this