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{{Short description|Object with no referenced value or with defined neutral ("null") behavior}}
{{Redirect|Null object|the concept in category theory|Initial object}}
In [[object-oriented]] [[computer programming]], a '''null object''' is an object with no referenced value or with defined neutral ("null") behavior. The null object [[design pattern]] describes the uses of such objects and their behavior (or lack thereof). It was first published in the [[Pattern Languages of Programs#Publications|''Pattern Languages of Program Design'' book series]].<ref>{{Cite book
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