Flatten nested lists in a list

firmo23 Published at Dev

firmo23

I have a list with nested lists inside.

LIST2 <- list(list("USA","WY","TX","AZ","Canada", "CA", "NY", 'Russia', 'NY'), 
             list(c("USA","Canada","CA","WY", 'China', 'AZ', 'AZ', 'AZ', 'WY')), 
             list(c("USA","Australia","CA","AR", 'AZ', 'WY', 'New Zealand', 'Japan', 'Japan', 'NJ')),
             list(list('Australia', 'Australia', 'Japan', 'Malaysia' )),
             list(c('USA', 'Australia', 'Japan', 'Malaysia' )))

I would like to flatten somehow the 1st and 4th list so they are same form as the rest of them. Is this possible?

zx8754

Loop through the list, unlist recursively, then return as a list:

lapply(LIST2, function(i) list(unlist(i, recursive = TRUE)))

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edited at2020-10-28

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