I have inadvertently over-ridden the package I created with a different function, saved it, and closed R Studio. Now, my R package contains an unintended function.
Thankfully, I did not install the package, so I still have the old package contents stored in my computer.
Is there a way to extract the function from the installed package? It's one long function. Not more than one function.
And, no, I do not have a backup, at least not the updated version.
View(package::function)
Where package is the package you mentioned you had installed and function is the function you're looking to to inspect.
The important thing is to forego the parenthesis where you would normally have the function argument. This will open the function code for inspection.
You can view the structure of a function by typing it's name in the console.
> sum
function (..., na.rm = FALSE) .Primitive("sum")
To get the function from a package, you can use the :: operator
> dplyr::coalesce
function (x, ...)
{
values <- list(...)
for (i in seq_along(values)) {
x <- replace_with(x, is.na(x), values[[i]], paste0("Vector ",
i))
}
x
}
<environment: namespace:dplyr>
functionBody()also works (most of the times)..RDatafile when you start a new R session. Tryrm(name_of_function)and see if you can use the package version afterwards.