Merge more than two lists in R

Question

Basically, I want to merge multiple lists in to a single list. All lists have same structure. Here is one example:

file1=list(A=1,B=2)
file2=list(A=2,B=3)
file3=list(A=3,B=4)

I know mapply() or Map() works.

> mapply(c, file1, file2, file3, SIMPLIFY=FALSE)
[[1]]
[1] 1 2 3

[[2]]
[1] 2 3 4

But the problem is that I actually have 500 lists, well, I can sure copy and paste object names 500 times. However, I'd like to learn how to do it efficiently. I have a vector containing names of each 500 lists, like this,

lsNames=c("file1","file2","file3")

but I have to no idea how to start, I appreciate any help, thanks.

Answer 1

Here's an alternative that works by constructing and then evaluating the same call to mapply() shown in the OP:

do.call(mapply, c(FUN=c, sapply(lsNames, as.symbol), SIMPLIFY=FALSE))
# $A
# file1 file2 file3 
#     1     2     3 
# 
# $B
# file1 file2 file3 
#     2     3     4