Column names of a data.frame separated with comma

Question

I want to get column names of a data.frame separated with comma (,). I remembered I got this result in past but now forgot the command.

df<- data.frame(x=1:10, y=11:20)
names(df)

Output

"x" "y"

Desired Output

c("x", "y")

Answer 1

The easiest way to get exactly what it sounds like you're asking for (without knowing exactly how you plan to use this information) is to use dput:

dput(names(df))
# c("x", "y")

By extension, without fussing with paste:

x <- capture.output(dput(names(df)))
x
# [1] "c(\"x\", \"y\")"
cat(x)
# c("x", "y")

---

Although @Jilber deleted his answer, you can use shQuote to go from what he had started with to the output of "x" above:

paste("c(", paste(shQuote(names(df)), collapse = ", "), ")", sep = "")
# [1] "c(\"x\", \"y\")"