Access lapply index names inside FUN

Question

Is there a way to get the list index name in my lapply() function?

n = names(mylist)
lapply(mylist, function(list.elem) { cat(\"What is the name of this list         


        

Answer 1

This basically uses the same workaround as Tommy, but with Map(), there's no need to access global variables which store the names of list components.

> x <- list(a=11, b=12, c=13)
> Map(function(x, i) paste(i, x), x, names(x))
$a
[1] "a 11"

$b
[1] "b 12"

$c
[1] "c 13

Or, if you prefer mapply()

> mapply(function(x, i) paste(i, x), x, names(x))
     a      b      c 
"a 11" "b 12" "c 13"