Let's say we have the following function:

foo <- function(x)
{
    line1 <- x
    line2 <- 0
    line3 <- line1 + line2
    return(line3)
}

And that we want to change the second line to be:

    line2 <- 2

How would you do that?

One way is to use

fix(foo)

And change the function.

Another way is to just write the function again.

Is there another way? (Remember, the task was to change just the second line)