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<p>well as various types of <a href="page.php?w=logic">logic</a>.</p>

<p><big> Computing </big></p>
<p>In some programming languages, any <a href="page.php?w=Expression_%28computer_science%29">expression</a> can be evaluated in a context that expects a <a href="page.php?w=Boolean_data_type">Boolean data type</a>. Typically (though this varies by programming language) expressions like the number <a href="page.php?w=zero">zero</a>, the <a href="page.php?w=empty_string">empty string</a>, empty lists, and <a href="page.php?w=Null_pointer">null</a> are treated</p><p>
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