library() # list all available packages
library(lib.loc = .Library) # list all packages in the default library
library(help = splines) # documentation on package 'splines'
library(splines) # attach package 'splines'
require(splines) # the same
search() # "splines", too
detach("package:splines")
# if the package name is in a character vector, use
pkg <- "splines"
library(pkg, character.only = TRUE)
detach(pos = match(paste("package", pkg, sep = ":"), search()))
require(pkg, character.only = TRUE)
detach(pos = match(paste("package", pkg, sep = ":"), search()))
require(nonexistent) # FALSE
## Not run:
# ## if you want to mask as little as possible, use
# library(mypkg, pos = "package:base")
# ## End(Not run)
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