pkgload: unload – R documentation

Become an expert in R — Interactive courses, Cheat Sheets, certificates and more!

unload

Unload a package

Description

This function attempts to cleanly unload a package, including unloading its namespace, deleting S4 class definitions and unloading any loaded DLLs. Unfortunately S4 classes are not really designed to be cleanly unloaded, and so we have to manually modify the class dependency graph in order for it to work - this works on the cases for which we have tested but there may be others. Similarly, automated DLL unloading is best tested for simple scenarios (particularly with useDynLib(pkgname) and may fail in other cases. If you do encounter a failure, please file a bug report at https://github.com/r-lib/pkgload/issues.

Usage

unload(package = pkg_name(), quiet = FALSE)

Arguments

`package`	package name.
`quiet`	if `TRUE` suppresses output from this function.

Examples

## Not run: 
# Unload package that is in current directory
unload()

# Unload package that is in ./ggplot2/
unload(pkg_name("ggplot2/"))

library(ggplot2)
# unload the ggplot2 package directly by name
unload("ggplot2")

## End(Not run)

pkgload

Simulate Package Installation and Attach

v1.2.1

GPL-3

Authors

Hadley Wickham [aut], Jim Hester [aut, cre], Winston Chang [aut], RStudio [cph], R Core team [ctb] (Some namespace and vignette code extracted from base R)

Initial release