138 lines
6.2 KiB
HTML
138 lines
6.2 KiB
HTML
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<meta name="description" content="API docs for the hashCode property from the Button class, for the Dart programming language.">
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<title>hashCode property - Button class - uiComponents library - Dart API</title>
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<!-- required because all the links are pseudo-absolute -->
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<base href="../..">
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<link href="https://fonts.googleapis.com/css?family=Source+Code+Pro:500,400i,400,300|Source+Sans+Pro:400,300,700" rel="stylesheet">
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<link rel="stylesheet" href="static-assets/github.css">
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<link rel="stylesheet" href="static-assets/styles.css">
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<link rel="icon" href="static-assets/favicon.png">
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</head>
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<body>
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<div id="overlay-under-drawer"></div>
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<header id="title">
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<button id="sidenav-left-toggle" type="button"> </button>
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<ol class="breadcrumbs gt-separated dark hidden-xs">
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<li><a href="index.html">touch_demonstrator</a></li>
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<li><a href="ui_home_uiComponents/ui_home_uiComponents-library.html">uiComponents</a></li>
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<li><a href="ui_home_uiComponents/Button-class.html">Button</a></li>
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<li class="self-crumb">hashCode property</li>
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</ol>
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<div class="self-name">hashCode</div>
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<form class="search navbar-right" role="search">
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<input type="text" id="search-box" autocomplete="off" disabled class="form-control typeahead" placeholder="Loading search...">
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</form>
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</header>
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<main>
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<div class="col-xs-6 col-sm-3 col-md-2 sidebar sidebar-offcanvas-left">
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<h5>Button class</h5>
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<ol>
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<li class="section-title"><a href="ui_home_uiComponents/Button-class.html#constructors">Constructors</a></li>
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<li><a href="ui_home_uiComponents/Button/Button.html">Button</a></li>
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<li class="section-title inherited">
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<a href="ui_home_uiComponents/Button-class.html#instance-properties">Properties</a>
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</li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/hashCode.html">hashCode</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/key.html">key</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/runtimeType.html">runtimeType</a></li>
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<li class="section-title"><a href="ui_home_uiComponents/Button-class.html#instance-methods">Methods</a></li>
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<li><a href="ui_home_uiComponents/Button/build.html">build</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/createElement.html">createElement</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/debugDescribeChildren.html">debugDescribeChildren</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/debugFillProperties.html">debugFillProperties</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/noSuchMethod.html">noSuchMethod</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/toDiagnosticsNode.html">toDiagnosticsNode</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/toString.html">toString</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/toStringDeep.html">toStringDeep</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/toStringShallow.html">toStringShallow</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/toStringShort.html">toStringShort</a></li>
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<li class="section-title inherited"><a href="ui_home_uiComponents/Button-class.html#operators">Operators</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/operator_equals.html">operator ==</a></li>
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</ol>
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</div><!--/.sidebar-offcanvas-->
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<div class="col-xs-12 col-sm-9 col-md-8 main-content">
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<h1>hashCode property</h1>
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<section id="getter">
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<section class="multi-line-signature">
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<span class="returntype">int</span>
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<span class="name ">hashCode</span>
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<div class="features">inherited</div>
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</section>
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<section class="desc markdown">
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<p>The hash code for this object.</p>
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<p>A hash code is a single integer which represents the state of the object
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that affects <code>operator ==</code> comparisons.</p>
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<p>All objects have hash codes.
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The default hash code represents only the identity of the object,
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the same way as the default <code>operator ==</code> implementation only considers objects
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equal if they are identical (see <code>identityHashCode</code>).</p>
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<p>If <code>operator ==</code> is overridden to use the object state instead,
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the hash code must also be changed to represent that state.</p>
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<p>Hash codes must be the same for objects that are equal to each other
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according to <code>operator ==</code>.
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The hash code of an object should only change if the object changes
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in a way that affects equality.
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There are no further requirements for the hash codes.
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They need not be consistent between executions of the same program
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and there are no distribution guarantees.</p>
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<p>Objects that are not equal are allowed to have the same hash code,
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it is even technically allowed that all instances have the same hash code,
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but if clashes happen too often, it may reduce the efficiency of hash-based
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data structures like <code>HashSet</code> or <code>HashMap</code>.</p>
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<p>If a subclass overrides <code>hashCode</code>, it should override the
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<code>operator ==</code> operator as well to maintain consistency.</p>
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</section>
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<section class="summary source-code" id="source">
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<h2><span>Implementation</span> </h2>
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<pre class="language-dart"><code class="language-dart">external int get hashCode;</code></pre>
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</section>
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</section>
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</div> <!-- /.main-content -->
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<div class="col-xs-6 col-sm-6 col-md-2 sidebar sidebar-offcanvas-right">
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</div><!--/.sidebar-offcanvas-->
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</main>
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<footer>
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<span class="no-break">
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touch_demonstrator 1.0.0+1
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</span>
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</footer>
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<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
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<script src="static-assets/typeahead.bundle.min.js"></script>
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<script src="static-assets/highlight.pack.js"></script>
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<script src="static-assets/URI.js"></script>
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<script src="static-assets/script.js"></script>
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</body>
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</html>
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