Converting a list to one row data.frame

Question

I have a list like this:

arg0 <- list(code = "a", n = rep(10, 3))

The number of objects in a list is variable. The objects of the list are vectors -- only one dimensional objects.

I want to make a procedure to convert the list to a one row data.frame like this:

> data.frame(code = "a", n.1 = 10, n.2 = 10, n.3 = 10)
  code n.1 n.2 n.3
1    a  10  10  10

I have this solution currently:

a <- stack(arg0)
b <- data.frame(t(a[,1]))
names(b) <- a[,2]
b <- data.frame(b)

Where b is almost the result I want to achieve:

> b
  code  n n.1 n.2
1    a 10  10  10

Two questions:

1. Is there more elegant way to achieve the result?
2. Do you have any idea how to get the numbering of the duplicate colnames like c(n.1, n.2, n.3)?

Answer 1

This is one way:

data.frame(t(unlist(arg0)))
#   code n1 n2 n3
# 1    a 10 10 10