cbind two lists of data.frames to a new list [duplicate]

问题

This question already has an answer here:

Combine two lists of dataframes, dataframe by dataframe (1 answer)

Closed 5 years ago.

I have two lists of data.frames. Both lists have the same length and contain fitting data.frames in their according list elements. So the scenario looks like this

dfa = data.frame(a=1:3, b = letters[1:3])
dfb = data.frame(x=runif(3))
a = replicate(3, dfa, simplify = FALSE)
b = replicate(3, dfb, simplify = FALSE)

One obvious solution is:

lapply(seq_along(a), function(i) cbind(a[[i]], b[[i]]))

But I was wondering if their might be a better solution.

回答1:

You can use Map

Map(cbind, a, b)

回答2:

You can use mapply :

mapply(cbind, a, b, SIMPLIFY=F)

来源：https://stackoverflow.com/questions/28898261/cbind-two-lists-of-data-frames-to-a-new-list