is.package.loaded: Check if a package is loaded

In Xmisc: Xiaobei's miscellaneous classes and functions

Description

Check if a package is loaded

Usage

is.package.loaded(x, envir = sys.frame(sys.parent(0)),
  character.only = FALSE)

Arguments

x	package, see library or require.
envir	the environment to use.
character.only	see library or require.

Value

logical

Author(s)

Xiaobei Zhao

See Also

check.packages

Examples

is.package.loaded(Xmisc)
is.package.loaded("Xmisc")
x <- "Xmisc"
is.package.loaded(x) #FALSE
is.package.loaded(x,character.only=TRUE) #TRUE

Example output

Attaching package: 'Xmisc'

The following object is masked from 'package:base':

    dir.exists

[1] TRUE
[1] TRUE
[1] FALSE
[1] TRUE

Xmisc documentation built on May 2, 2019, 8:23 a.m.