168 lines
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168 lines
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<title>operator == method - PolylineUpdates class - amap_map library - Dart API</title>
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<li><a href="../../amap_map/PolylineUpdates-class.html">PolylineUpdates</a></li>
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<li class="self-crumb">operator == method</li>
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<div class="self-name">operator ==</div>
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<li class="self-crumb">operator == method</li>
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<h5>PolylineUpdates class</h5>
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<ol>
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<li class="section-title"><a href="../../amap_map/PolylineUpdates-class.html#constructors">Constructors</a></li>
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<a href="../../amap_map/PolylineUpdates-class.html#instance-properties">Properties</a>
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<li><a href="../../amap_map/PolylineUpdates/polylinesToChange.html">polylinesToChange</a></li>
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<li class="inherited"><a href="https://api.flutter.dev/flutter/dart-core/Object/runtimeType.html">runtimeType</a></li>
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<li class="section-title"><a href="../../amap_map/PolylineUpdates-class.html#instance-methods">Methods</a></li>
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<li class="inherited"><a href="https://api.flutter.dev/flutter/dart-core/Object/noSuchMethod.html">noSuchMethod</a></li>
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<li><a href="../../amap_map/PolylineUpdates/toMap.html">toMap</a></li>
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<li><a href="../../amap_map/PolylineUpdates/toString.html">toString</a></li>
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<li class="section-title"><a href="../../amap_map/PolylineUpdates-class.html#operators">Operators</a></li>
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<li><a href="../../amap_map/PolylineUpdates/operator_equals.html">operator ==</a></li>
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<div id="dartdoc-main-content" class="col-xs-12 col-sm-9 col-md-8 main-content">
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<div><h1><span class="kind-method">operator ==</span> method </h1></div>
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<section class="multi-line-signature">
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<div>
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<ol class="annotation-list">
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<li>@<a href="https://api.flutter.dev/flutter/dart-core/override-constant.html">override</a></li>
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</ol>
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</div>
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<span class="returntype"><a href="https://api.flutter.dev/flutter/dart-core/bool-class.html">bool</a></span>
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<span class="name ">operator ==</span>
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(<wbr><ol class="parameter-list"><li><span class="parameter" id="==-param-other"><span class="type-annotation"><a href="https://api.flutter.dev/flutter/dart-core/Object-class.html">Object</a></span> <span class="parameter-name">other</span></span></li>
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</ol>)
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<div class="features">override</div>
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</section>
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<section class="desc markdown">
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<p>The equality operator.</p>
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<p>The default behavior for all <a href="https://api.flutter.dev/flutter/dart-core/Object-class.html">Object</a>s is to return true if and
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only if <code>this</code> and <code>other</code> are the same object.</p>
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<p>Override this method to specify a different equality relation on
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a class. The overriding method must still be an equivalence relation.
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That is, it must be:</p>
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<ul>
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<li>
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<p>Total: It must return a boolean for all arguments. It should never throw
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or return <code>null</code>.</p>
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</li>
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<li>
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<p>Reflexive: For all objects <code>o</code>, <code>o == o</code> must be true.</p>
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</li>
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<li>
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<p>Symmetric: For all objects <code>o1</code> and <code>o2</code>, <code>o1 == o2</code> and <code>o2 == o1</code> must
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either both be true, or both be false.</p>
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</li>
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<li>
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<p>Transitive: For all objects <code>o1</code>, <code>o2</code>, and <code>o3</code>, if <code>o1 == o2</code> and
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<code>o2 == o3</code> are true, then <code>o1 == o3</code> must be true.</p>
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</li>
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</ul>
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<p>The method should also be consistent over time,
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so whether two objects are equal should only change
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if at least one of the objects was modified.</p>
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<p>If a subclass overrides the equality operator it should override
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the <a href="../../amap_map/PolylineUpdates/hashCode.html">hashCode</a> method 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">@override
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bool operator ==(Object other) {
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if (identical(this, other)) return true;
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if (other.runtimeType != runtimeType) return false;
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final PolylineUpdates typedOther = other;
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return setEquals(polylinesToAdd, typedOther.polylinesToAdd) &&
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setEquals(polylineIdsToRemove, typedOther.polylineIdsToRemove) &&
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setEquals(polylinesToChange, typedOther.polylinesToChange);
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}</code></pre>
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</section>
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