Gets a character vector of folder strings and
returns the same vector after removing the end of the folder path.
up_folder(FOLDER, n = -1, ...)
a character vector of folders
passed to n in function head
The name of the file in the URL
up_folder(FOLDER = c("D:/R/R-3.0.1", "D:/R/R-3.0.2", "D:/R/R-3.0.3"))
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