# phpman > perldoc > Dpkg::Deps::AND

## NAME
    [Dpkg::Deps::AND](https://www.chedong.com/phpMan.php/perldoc/Dpkg%3A%3ADeps%3A%3AAND/markdown) - list of AND dependencies

## DESCRIPTION
    This class represents a list of dependencies that must be met at the same time. It inherits from
    [Dpkg::Deps::Multiple](https://www.chedong.com/phpMan.php/perldoc/Dpkg%3A%3ADeps%3A%3AMultiple/markdown).

## METHODS
    $dep->output([$fh])
        The output method uses ", " to join the list of sub-dependencies.

    $dep->implies($other_dep)
        Returns 1 when $dep implies $other_dep. Returns 0 when $dep implies NOT($other_dep). Returns
        undef when there's no implication. $dep and $other_dep do not need to be of the same type.

    $dep->get_evaluation($facts)
        Evaluates the dependency given a list of installed packages and a list of virtual packages
        provided. These lists are part of the [Dpkg::Deps::KnownFacts](https://www.chedong.com/phpMan.php/perldoc/Dpkg%3A%3ADeps%3A%3AKnownFacts/markdown) object given as parameters.

        Returns 1 when it's true, 0 when it's false, undef when some information is lacking to
        conclude.

    $dep->simplify_deps($facts, @assumed_deps)
        Simplifies the dependency as much as possible given the list of facts (see object
        [Dpkg::Deps::KnownFacts](https://www.chedong.com/phpMan.php/perldoc/Dpkg%3A%3ADeps%3A%3AKnownFacts/markdown)) and a list of other dependencies that are known to be true.

## CHANGES
  Version 1.00 (dpkg 1.15.6)
    Mark the module as public.