| autoload {base} | R Documentation |
On-demand Loading of Packages
Description
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.
Usage
autoload(name, package, reset = FALSE, ...)
autoloader(name, package, ...)
.AutoloadEnv
.Autoloaded
Arguments
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 |
... |
other arguments to |
Value
This function is invoked for its side-effect. It has no return value.
See Also
Examples
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")
[Package base version 4.5.0 Index]