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On-demand loading of packages
Usage
autoload(name, file)
Arguments
name
|
string giving the name of an object
|
file
|
string giving the name of a package containing the object
|
Description
Creates a promise-to-evaluate a loader function and stores it in the
.AutoloadEnv
environment. When R attempts to evaluate name
the package is loaded and name
is re-evaluated in the
new package's environment. The result is that R behaves as if
file
was loaded but it does not occupy memory.
Value
nothing interesting
See Also
delay
, library
Examples
autoload("line","eda")
search()
ls("Autoloads")
all(ls("Autoloads") == ls(envir = .AutoloadEnv))
data(cars)
plot(cars)
z<-line(cars)
abline(coef(z))
search()
detach("package:eda")
search()
z<-line(cars)
search()