autoload creates a promise-to-evaluate autoloader and stores it with name name in .AutoloadEnv environment. When R attempts to evaluate name, autoloader is run, the package is loaded and name is re-evaluated in the new package's environment. The result is that R behaves as if package was loaded but it does not occupy memory. .Autoloaded contains the names of the packages for which autoloading has been promised.
autoload(name, package, reset = FALSE, …)
autoloader(name, package, …)<p></p><p>.AutoloadEnv
.Autoloaded</p>| Parameter | Description |
|---|---|
name |
string giving the name of an object. |
package |
string giving the name of a package containing the object. |
reset |
logical: for internal use by autoloader. |
… |
other arguments to library. |
# NOT RUN {
require(stats)
autoload("interpSpline", "splines")
search()
ls("Autoloads")
.Autoloaded
x <- sort(stats::rnorm(12))
y <- x^2
is <- interpSpline(x, y)
search() ## now has splines
detach("package:splines")
search()
is2 <- interpSpline(x, y+x)
search() ## and again
detach("package:splines")
# }