loadOrInstall(package, dependencies="Depends",...)
install.packages
.require
, install.packages
.TRUE
if all packages are loaded sucessfully. If FALSE
, its "failed"
attribute contains a vector of package names that failed to be loaded.require
to see if the package can be loaded. If not, it calls install.packages
.
Then require
is called again for the installed package.library
, require
, install.packages