validate_installed_package

package

version

compare

Checks whether a package has already been installed. If
  it has, and if the version corresponds to the required
  package version, then it returns TRUE. If it has been
  installed and the version does not correspond to the
  required version, then it throws an exception. Otherwise,
  it returns false.

Rbundler manages a project-specific library for dependency
    package installation. By specifying dependencies in a DESCRIPTION file
    in a project's root directory, one may install and use dependencies
    in a repeatable fashion without requiring manual maintenance.
    rbundler creates a project-specific R library in
    `PROJECT_ROOT/.Rbundle` (by default) and a project-specific
    `R_LIBS_USER` value, set in `PROJECT_ROOT/.Renviron`. It supports
    dependency management for R standard "Depends", "Imports",
    "Suggests", and "LinkingTo" package dependencies. rbundler also
    attempts to validate and install versioned dependencies, such
    as ">=", "==", "<=". Note that, due to the way R manages package
    installation, differing nested versioned dependencies are not
    allowed. For example, if your project depends on packages A (== 1),
    and B (==2), but package A depends on B (==1), then a nested
    dependency violation will cause rbundler to error out.

Yoni Ben-Meshulam

rbundler

Rbundler manages an application's dependencies systematically
        and repeatedly.

validate_installed_package function

Checks whether a package has already been installed. If it has, and if the version corresponds to the
required package version, then it returns TRUE. If it has been installed and the version does
not correspond to the required version, then it throws an exception. Otherwise, it returns false.

Description

Usage

Arguments

Value