Convenient functions for moving files, deleting directories, and a variety of string operations that facilitate manipulating files and extracting information from strings.
Convenient functions for moving files, deleting directories, and a variety of string operations that facilitate manipulating file names and extracting information from strings.
To install the release version (recommended) from CRAN, in R, enter
To install the development version, in R, first install
install.packages("devtools"). Then enter
First let's load the library:
I find it bizarre that base R has no
file.move. To move a file, you have to unintuitively rename it.
file.move(files, destinations). This function has the nice feature that if you try to move files to a directory that doesn't exist, it creates the directory first and then puts the files inside. Let's create a directory and a file:
#>  TRUE
Now let's put the file into the directory:
#> 1 file moved. 0 failed.
To delete directories with base R, one has to use
unlink(..., recursive = TRUE). The
filesstrings package gives you
dir.remove() which does the same job.
#> 1 directory deleted. 0 failed to delete.
"A space in your file name is a hole in your soul." - Jenny Bryan
remove_filename_spaces(replacement = "_") replaces them all with underscores for all files in a directory. By default, they are replaced with nothing.
file.create(c("file 1.txt", "file 2.txt"))
#>  TRUE TRUE
remove_filename_spaces(pattern = "txt$", replacement = "_")
#> 2 files renamed. 0 failed to rename.
list.files(pattern = "txt$")
#>  "file_1.txt" "file_2.txt"
file.remove(list.files(pattern = "txt$")) # clean up
#>  TRUE TRUE
I often want to get the first, last or nth number in a string.
pop <- "A population of 1000 comprised of 488 dogs and 512 cats."nth_number(pop, 1)
#>  1000
nth_number(pop, -1) # last number
#>  512
#> [] #>  1000 488 512
#> [] #>  "A population of " " comprised of " " dogs and " #>  " cats."
str_trim just trims whitespace. What if you want to trim something else? Now you can
#>  "rmarkdown"
Contributions to this package are welcome. The preferred method of contribution is through a github pull request. Feel free to contact me by creating an issue. Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms.
all_equal()for dealing with arrays.
str_nth_instance_indices()are much faster.
paste_different_lengths()are gone. They didn't belong.
before_last_dot()now works in the case where the input has no dots, returning the input.
dir.delete()to conform with the
basenaming pattern of such functions.
PutFilesInDir()had is now default for
AllEqual()and improve its documentation.
ExtractNumerics()and its documentation.
StrReverse()is removed. Use
Found no calls to: ‘R_registerRoutines’, ‘R_useDynamicSymbols’by following Giorgio Spedicato's answer at http://stackoverflow.com/questions/42313373/r-cmd-check-note-found-no-calls-to-r-registerroutines-r-usedynamicsymbols