paste0() Function in R

The paste0() is a built-in function in base R to concatenate all elements without a separator. This tutorial demonstrates how to use the paste0() method in R.

the Paste0() Function in R

The paste0() function concatenate elements without a separator; it also takes one optional argument, collapse. We use paste0() instead of paste() because it is faster and doesn’t need a sep argument.

Let’s try an example.

paste0("Delftstack", ".com")
paste0("Delftstack", " Tutorials")
paste0(letters[5:10])

The code above concatenate the given objects without the sep argument. See output:

[1] "Delftstack.com"

[1] "Delftstack Tutorials"

[1] "e" "f" "g" "h" "i" "j"

Let’s try paste0() with collapse argument, the collapse works similar to the sep argument in some cases. See example:

paste0("Delftstack", "com" , collapse = "*")
paste0("Delftstack", " Tutorials" , collapse = " ")
paste0(letters[5:10] , collapse = "-")

Here the collapse will only work for the third paste0 function. See output:

[1] "Delftstackcom"

[1] "Delftstack Tutorials"

[1] "e-f-g-h-i-j"