Find the indices of lines in Markdown that are prose (not code blocks)
Read a text file and concatenate the lines by '\n'
Convert numbers to English words
Normalize paths
Type a character vector into the RStudio source editor
Run R CMD check on the reverse dependencies of a package
Test if two paths are the same after they are normalized
Protect math expressions in pairs of backticks in Markdown
An alternative to sessionInfo() to print session information
Print a character vector in its raw form
Parse R code and do not keep the source
Check if a character vector consists of entirely ASCII characters
Try to evaluate an expression silently
Try to use the system native encoding to represent a character vector
Strict lists
Run OptiPNG on all PNG files under a directory
Test for types of operating systems
Attach or load packages, and automatically install missing packages if
requested
A simple JSON serializer
Read / write files encoded in UTF-8
Manipulate filename extensions
Evaluate an expression under a specified working directory
Search and replace strings in files
Try various methods to download a file
Embed a file, multiple files, or directory on an HTML page
Install a source package from a directory
Test if an object is identical to FALSE
Run the commands Rscript and R CMD
Obtain an attribute of an object without partial matching