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<h1><a id="libraryTitle" href="../index.html">AsyncDisplayKit </a></h1>
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<h1 class="hideInXcode">ASCollectionView Class Reference</h1>
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<option value="top">Jump To…</option>
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<option value="overview">Overview</option>
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<option value="tasks">Tasks</option>
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<option value="properties">Properties</option>
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<option value="//api/name/rangeTuningParameters"> rangeTuningParameters</option>
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<option value="//api/name/workingRangeCalculationBlock"> workingRangeCalculationBlock</option>
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<option value="instance_methods">Instance Methods</option>
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<option value="//api/name/appendNodesWithIndexPaths:"> - appendNodesWithIndexPaths:</option>
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<option value="//api/name/calculatedSizeForNodeAtIndexPath:"> - calculatedSizeForNodeAtIndexPath:</option>
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<option value="//api/name/reloadData"> - reloadData</option>
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<li role="treeitem"><span class="nodisclosure"></span><span class="sectionName"><a href="#overview">Overview</a></span></li>
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<li role="treeitem" class="children"><span class="disclosure"></span><span class="sectionName"><a href="#properties">Properties</a></span><ul>
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<li><span class="nodisclosure"></span><span class="sectionName"><a href="#//api/name/rangeTuningParameters">rangeTuningParameters</a></span></li>
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<li><span class="nodisclosure"></span><span class="sectionName"><a href="#//api/name/workingRangeCalculationBlock">workingRangeCalculationBlock</a></span></li>
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</ul></li>
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<li role="treeitem" class="children"><span class="disclosure"></span><span class="sectionName"><a href="#instance_methods">Instance Methods</a></span><ul>
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<li><span class="nodisclosure"></span><span class="sectionName"><a href="#//api/name/appendNodesWithIndexPaths:">appendNodesWithIndexPaths:</a></span></li>
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<li><span class="nodisclosure"></span><span class="sectionName"><a href="#//api/name/calculatedSizeForNodeAtIndexPath:">calculatedSizeForNodeAtIndexPath:</a></span></li>
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<li><span class="nodisclosure"></span><span class="sectionName"><a href="#//api/name/reloadData">reloadData</a></span></li>
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<article>
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<div id="contents" class="isShowingTOC" role="main">
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<a title="ASCollectionView Class Reference" name="top"></a>
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<div class="main-navigation navigation-top">
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<ul>
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<li><a href="../index.html">Index</a></li>
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<li><a href="../hierarchy.html">Hierarchy</a></li>
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</ul>
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</div>
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<div id="header">
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<div class="section-header">
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<h1 class="title title-header">ASCollectionView Class Reference</h1>
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</div>
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</div>
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<div id="container">
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<div class="section section-specification"><table cellspacing="0"><tbody>
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<tr>
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<td class="specification-title">Inherits from</td>
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<td class="specification-value">UICollectionView</td>
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</tr><tr>
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<td class="specification-title">Declared in</td>
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<td class="specification-value">ASCollectionView.h</td>
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</tr>
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</tbody></table></div>
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<div class="section section-overview">
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<a title="Overview" name="overview"></a>
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<h2 class="subtitle subtitle-overview">Overview</h2>
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<p>Node-based collection view.</p>
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<p>ASCollectionView is a version of UICollectionView that uses nodes – specifically, ASCellNode subclasses – with asynchronous
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pre-rendering instead of synchronously loading UICollectionViewCells.</p>
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</div>
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<div class="section section-tasks">
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<a title="Tasks" name="tasks"></a>
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<h2 class="subtitle subtitle-tasks">Tasks</h2>
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<ul class="task-list">
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<li>
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<span class="tooltip">
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<code><a href="#//api/name/rangeTuningParameters"> rangeTuningParameters</a></code>
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</span>
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<span class="task-item-suffix">property</span>
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</li><li>
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<span class="tooltip">
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<code><a href="#//api/name/workingRangeCalculationBlock"> workingRangeCalculationBlock</a></code>
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</span>
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<span class="task-item-suffix">property</span>
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</li><li>
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<span class="tooltip">
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<code><a href="#//api/name/reloadData">– reloadData</a></code>
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</span>
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</li><li>
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<span class="tooltip">
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<code><a href="#//api/name/appendNodesWithIndexPaths:">– appendNodesWithIndexPaths:</a></code>
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</span>
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</li><li>
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<span class="tooltip">
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<code><a href="#//api/name/calculatedSizeForNodeAtIndexPath:">– calculatedSizeForNodeAtIndexPath:</a></code>
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</span>
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</li>
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</ul>
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</div>
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<div class="section section-methods">
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<a title="Properties" name="properties"></a>
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<h2 class="subtitle subtitle-methods">Properties</h2>
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<div class="section-method">
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<a name="//api/name/rangeTuningParameters" title="rangeTuningParameters"></a>
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<h3 class="subsubtitle method-title">rangeTuningParameters</h3>
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<div class="method-subsection brief-description">
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<p>Tuning parameters for the working range.</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nonatomic, assign) ASRangeTuningParameters rangeTuningParameters</code></div>
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<div class="method-subsection discussion-section">
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<h4 class="method-subtitle">Discussion</h4>
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<p>Defaults to a trailing buffer of one screenful and a leading buffer of two screenfuls.</p>
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</div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<code class="declared-in-ref">ASCollectionView.h</code><br />
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</div>
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</div>
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<div class="section-method">
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<a name="//api/name/workingRangeCalculationBlock" title="workingRangeCalculationBlock"></a>
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<h3 class="subsubtitle method-title">workingRangeCalculationBlock</h3>
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<div class="method-subsection brief-description">
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<p>An optional block which can perform custom calculation for working range.</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nonatomic, assign) asrangecontroller_working_range_calculation_block_t workingRangeCalculationBlock</code></div>
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<div class="method-subsection discussion-section">
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<h4 class="method-subtitle">Discussion</h4>
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<p>Can be used to provide custom working range logic for custom layouts.</p>
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</div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<code class="declared-in-ref">ASCollectionView.h</code><br />
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</div>
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</div>
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</div>
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<div class="section section-methods">
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<a title="Instance Methods" name="instance_methods"></a>
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<h2 class="subtitle subtitle-methods">Instance Methods</h2>
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<div class="section-method">
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<a name="//api/name/appendNodesWithIndexPaths:" title="appendNodesWithIndexPaths:"></a>
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<h3 class="subsubtitle method-title">appendNodesWithIndexPaths:</h3>
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<div class="method-subsection brief-description">
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<p>Append nodes.</p>
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</div>
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<div class="method-subsection method-declaration"><code>- (void)appendNodesWithIndexPaths:(id)<em>indexPaths</em></code></div>
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<div class="method-subsection arguments-section parameters">
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<h4 class="method-subtitle parameter-title">Parameters</h4>
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<dl class="argument-def parameter-def">
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<dt><em>indexPaths</em></dt>
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<dd><p>Ordered array of index paths corresponding to the nodes to be added.</p></dd>
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</dl>
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</div>
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<div class="method-subsection discussion-section">
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<h4 class="method-subtitle">Discussion</h4>
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<p>As with UICollectionView, the asyncDataSource must be updated to reflect the new nodes before this method is called.</p>
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</div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<code class="declared-in-ref">ASCollectionView.h</code><br />
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</div>
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</div>
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<div class="section-method">
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<a name="//api/name/calculatedSizeForNodeAtIndexPath:" title="calculatedSizeForNodeAtIndexPath:"></a>
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<h3 class="subsubtitle method-title">calculatedSizeForNodeAtIndexPath:</h3>
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<div class="method-subsection brief-description">
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<p>Query the sized node at <code>indexPath</code> for its calculatedSize.</p>
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</div>
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<div class="method-subsection method-declaration"><code>- (CGSize)calculatedSizeForNodeAtIndexPath:(id)<em>indexPath</em></code></div>
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<div class="method-subsection arguments-section parameters">
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<h4 class="method-subtitle parameter-title">Parameters</h4>
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<dl class="argument-def parameter-def">
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<dt><em>indexPath</em></dt>
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<dd><p>The index path for the node of interest.</p></dd>
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</dl>
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</div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<code class="declared-in-ref">ASCollectionView.h</code><br />
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</div>
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</div>
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<div class="section-method">
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<a name="//api/name/reloadData" title="reloadData"></a>
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<h3 class="subsubtitle method-title">reloadData</h3>
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<div class="method-subsection brief-description">
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<p>Reload everything from scratch, destroying the working range and all cached nodes.</p>
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</div>
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<div class="method-subsection method-declaration"><code>- (void)reloadData</code></div>
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<div class="method-subsection discussion-section">
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<h4 class="method-subtitle">Discussion</h4>
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<div class="warning"><p><strong>Warning:</strong> This method is substantially more expensive than UICollectionView’s version.</p></div>
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</div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<code class="declared-in-ref">ASCollectionView.h</code><br />
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</div>
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