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Servant (design pattern)
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<p>In <a href="/facts/Software_engineering/KX6cE9kz">software engineering</a>, the servant pattern defines an object used to offer some functionality to a group of <a href="/facts/Class_(computer_science)/zvzkSAtE">classes</a> without defining that functionality in each of them. A Servant is a class whose <a href="/facts/Object_(computer_science)/eX99dtAw">instance</a> (or even just class) provides <a href="/facts/Method_(computer_science)/8kAXxVYs">methods</a> that take care of a desired service, while objects for which (or with whom) the servant does something, are taken as <a href="/facts/Parameter_(computer_science)/LcuLbbSq">parameters</a>. </p>