Functions

File operations

File operations

writeLines	Write text to a file
readLines	Read some or all text lines from a file.
savePickle	Save a python object as a binary file
readPickle	Load a python object saved with savePickle
unzip	Unzip all files from a zip file to a certain path
zip_archive	Zip a folder to a file
writeZip

Path operations

Path operations

getwd	Get the current working directory
setwd	Set the current working directory
file_path	Construct a path to a file or paths to files
file_path_sans_ext	Get the path of a file without the extension
file_ext	Get the extension of a file
list_files	List all files in a directory
file_copy	Copy files
unlink	Delete an entire directory tree
file_remove	Remove files
tempdir	Get the the path to a tempory directory
tempfile	Get the the path to a tempory file
dirname	Get the root directory of a file or folder
basename	Get the basename of a file

General object operations

General object operations

unique	Get unique values in a list
append	Append list-like elements together
setdiff	Performs set difference on two lists
intersect	Performs intersection on two lists
union	Performs the union of two lists
match	Looks up x in table and returns the positions where it has found x
match_arg	Match an argument to an existing set of possible values
rm	Deletes objects from globals()

Text operations

Text operations

letters	Get the 26 lowercased letters as a list
LETTERS	Get the 26 uppercased ASCII letters as a list
tolower	Put text in lower casing
toupper	Put text in upper casing
paste	Paste text by concatenating the strings
strsplit	Splits text according to a regular expression into a list
nchar	Count the number of characters in text
substr	Get a substring of text from position start up to and including position end.
trimws	Remove leading and/or trailing whitespace from character strings.
gsub	Pattern replacement in texts
grepl	Identify the existing matches in texts

Dates

Dates

Sys_Date	Get the current date
Sys_time	Get the current time

Environment

Environment

Sys_getenv	Obtains the values of the environment variables
Sys_setenv	Set the values of environment variables
Sys_unsetenv	Clears an environment variable