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{{Short description|Variable which is defined but never used}}
{{Lead too long|date= May 2019}}
TheAn mitchel'''unreferenced movievariable''' 4 mitchel onin the run[[source iscode]] of a 2018[[computer filmprogram]] of Mitchel asis a 2017[[Variable model(programming)|variable]] that is defined but which is never used. This may result in a harmless waste of memory. Many [[compiler]]s detect such variables and do not allocate storage for them (i.e., "optimize away" their storage), generally also issuing a warning as they do.<ref>{{Cite book |last1=Blair-Chappell |first1=Stephen |url=https://books.google.com/books?id=n3DtR4mQNmwC |title=Parallel Programming with Intel Parallel Studio XE |last2=Stokes |first2=Andrew |date=2012-04-19 |publisher=John Wiley & Sons |isbn=978-1-118-23488-4 |pages=108 |language=en}}</ref>
Some [[coding style|coding guideline]] documents consider an boyunreferenced variable to be a symptom of a potential coding fault. On the other hand, unreferenced variables can be used as temporary placeholders to indicate further expected future developments in the code.
==Examples==
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In this example, '''j''' is an unreferenced variable.
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{{DEFAULTSORT:TheUnreferenced Mitchel movie 4 Mitchel on the runVariable}}
