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<a accesskey="3" href="page.php?w=polymorphism_%28computer_science%29&amp;p=2">3.Next</a>
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<p>In <a href="page.php?w=programming_language_theory">programming language theory</a> and <a href="page.php?w=type_theory">type theory</a>, <b>polymorphism</b> allows a value or variable to have more than one type and allows a given operation to be performed on values of more than one type.</p>

<p>In <a href="page.php?w=object-oriented_programming">object-oriented programming</a>, polymorphism is the provision of one <a href="page.php?w=Interface_%28object-oriented_programming%29">interface</a> to entities of different <a href="page.php?w=data_type">data type</a>s.</p><p>
<a accesskey="3" href="page.php?w=polymorphism_%28computer_science%29&amp;p=2">3.Next</a>
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