http://coderwiki.org/index.php?action=history&feed=atom&title=Value 2026-05-19T03:56:09Z Revision history for this page on the wiki MediaWiki 1.44.0 http://coderwiki.org/index.php?title=Value&diff=155&oldid=prev 2025-08-20T21:09:05Z

<p>new: info, attributes, evaluation</p> <p><b>New page</b></p><div>A &#039;&#039;&#039;value&#039;&#039;&#039; is a fundamental concept representing a specific piece of [[Data (computing)|data]] that can often be [[Assignment|manipulated]] by a [[program]]. It is the actual data itself, as opposed to the [[Variable (computer science)|variable]], which is a named container or reference that &#039;&#039;holds&#039;&#039; a &#039;&#039;&#039;value&#039;&#039;&#039;. Values are the most basic units of information processed by a [[program]].<br /> <br /> == Attributes ==<br /> Values usually have:<br /> <br /> * A &#039;&#039;&#039;[[Data type|type]]&#039;&#039;&#039; (e.g., [[integer]], [[string]], [[boolean]], [[Object|other object]])<br /> * Some &#039;&#039;&#039;data content&#039;&#039;&#039; (the actual [[Bit|bits]] representing the data, according to its [[Data type|type]])<br /> <br /> Values can be [[Mutability|mutable]], meaning their data can be changed after [[assignment]], or [[Mutability|immutable]], meaning their data &#039;&#039;&#039;cannot&#039;&#039;&#039; be changed after [[assignment]].<br /> <br /> == Evaluation ==<br /> In an [[Expression (computer science)|expression]], variables and function calls are evaluated to produce a &#039;&#039;&#039;value&#039;&#039;&#039; before the operation is performed:&lt;syntaxhighlight lang=&quot;java&quot; line=&quot;1&quot;&gt;<br /> int a = 10; // evaluated to the value 10 then assigned to &#039;a&#039;<br /> int b = 20; // evaluated to the value 20 then assigned to &#039;a&#039;<br /> int c = a + b; // evaluated to the value 30 THEN assigned to &#039;c&#039;<br /> &lt;/syntaxhighlight&gt;</div>

Dylan