Dear R Community,

I have the following Problem. I use foreach nested loops, which then return
a list of lists. E.g.:

[[1]]
[[1]][[1]]
Output
[[1]][[2]]
Output
[[1]][[3]]
Output
[[2]]
[[2]][[1]]
Output
....

What I want to achieve is a single layer list, i.e. a list in which
[[1]][[1]] becomes [[1]], [[1]][[2]] becomes [[2]],...,[[2]][[1]] becomes
[[4]] and so on.

Here a reproducible example:

test <- foreach(i = 1:3) %:%
              foreach (j = 1:3) %do% {
                 paste(i,j,sep=",")
              }

In my real problem I have up to 5-6 layers. Anyone an idea?

Thanks!

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