Print a named vector in R?

Question

Suppose I have this named vector:

> foo = setNames(c("one", "two"), c(1, 2))
> foo
    1     2 
"one" "two" 
> names(foo)
[1] "1" "2"
> foo
    1     2 
"one" "two" 

What is the easiest way to print the following:

1: one, 2: two

I just want it for debugging.

Could be with or without quotes, I'm not picky.

I've got this, but it seems very chatty:

the_vec = c()
for (idx in 1:length(foo)) {
  the_vec = c(the_vec, paste(idx, ":", foo[idx], sep=""))
}
paste(the_vec, collapse=", ")

output:

[1] "1:one, 2:two"

Answer 1

paste(names(foo), foo, sep = ":", collapse = ",")