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<h1 id="Lucene_Net_Support_C5_IDirectedCollectionValue_1" data-uid="Lucene.Net.Support.C5.IDirectedCollectionValue`1" class="text-break">Interface IDirectedCollectionValue&lt;T&gt;
</h1>
<div class="markdown level0 summary"><p>A sized generic collection, that can be enumerated backwards.</p>
</div>
<div class="markdown level0 conceptual"></div>
<div class="inheritedMembers">
<h5>Inherited Members</h5>
<div>
<a class="xref" href="Lucene.Net.Support.C5.ICollectionValue-1.html#Lucene_Net_Support_C5_ICollectionValue_1_ListenableEvents">ICollectionValue&lt;T&gt;.ListenableEvents</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Support.C5.ICollectionValue-1.html#Lucene_Net_Support_C5_ICollectionValue_1_ActiveEvents">ICollectionValue&lt;T&gt;.ActiveEvents</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Support.C5.ICollectionValue-1.html#Lucene_Net_Support_C5_ICollectionValue_1_CollectionChanged">ICollectionValue&lt;T&gt;.CollectionChanged</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Support.C5.ICollectionValue-1.html#Lucene_Net_Support_C5_ICollectionValue_1_CollectionCleared">ICollectionValue&lt;T&gt;.CollectionCleared</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Support.C5.ICollectionValue-1.html#Lucene_Net_Support_C5_ICollectionValue_1_ItemsAdded">ICollectionValue&lt;T&gt;.ItemsAdded</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Support.C5.ICollectionValue-1.html#Lucene_Net_Support_C5_ICollectionValue_1_ItemInserted">ICollectionValue&lt;T&gt;.ItemInserted</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Support.C5.ICollectionValue-1.html#Lucene_Net_Support_C5_ICollectionValue_1_ItemsRemoved">ICollectionValue&lt;T&gt;.ItemsRemoved</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Support.C5.ICollectionValue-1.html#Lucene_Net_Support_C5_ICollectionValue_1_ItemRemovedAt">ICollectionValue&lt;T&gt;.ItemRemovedAt</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Support.C5.ICollectionValue-1.html#Lucene_Net_Support_C5_ICollectionValue_1_IsEmpty">ICollectionValue&lt;T&gt;.IsEmpty</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Support.C5.ICollectionValue-1.html#Lucene_Net_Support_C5_ICollectionValue_1_Count">ICollectionValue&lt;T&gt;.Count</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Support.C5.ICollectionValue-1.html#Lucene_Net_Support_C5_ICollectionValue_1_CountSpeed">ICollectionValue&lt;T&gt;.CountSpeed</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Support.C5.ICollectionValue-1.html#Lucene_Net_Support_C5_ICollectionValue_1_CopyTo__0___System_Int32_">ICollectionValue&lt;T&gt;.CopyTo(T[], Int32)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Support.C5.ICollectionValue-1.html#Lucene_Net_Support_C5_ICollectionValue_1_ToArray">ICollectionValue&lt;T&gt;.ToArray()</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Support.C5.ICollectionValue-1.html#Lucene_Net_Support_C5_ICollectionValue_1_Apply_System_Action__0__">ICollectionValue&lt;T&gt;.Apply(Action&lt;T&gt;)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Support.C5.ICollectionValue-1.html#Lucene_Net_Support_C5_ICollectionValue_1_Exists_System_Func__0_System_Boolean__">ICollectionValue&lt;T&gt;.Exists(Func&lt;T, Boolean&gt;)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Support.C5.ICollectionValue-1.html#Lucene_Net_Support_C5_ICollectionValue_1_Find_System_Func__0_System_Boolean___0__">ICollectionValue&lt;T&gt;.Find(Func&lt;T, Boolean&gt;, T)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Support.C5.ICollectionValue-1.html#Lucene_Net_Support_C5_ICollectionValue_1_All_System_Func__0_System_Boolean__">ICollectionValue&lt;T&gt;.All(Func&lt;T, Boolean&gt;)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Support.C5.ICollectionValue-1.html#Lucene_Net_Support_C5_ICollectionValue_1_Choose">ICollectionValue&lt;T&gt;.Choose()</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Support.C5.ICollectionValue-1.html#Lucene_Net_Support_C5_ICollectionValue_1_Filter_System_Func__0_System_Boolean__">ICollectionValue&lt;T&gt;.Filter(Func&lt;T, Boolean&gt;)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Support.C5.IShowable.html#Lucene_Net_Support_C5_IShowable_Show_System_Text_StringBuilder_System_Int32__System_IFormatProvider_">IShowable.Show(StringBuilder, Int32, IFormatProvider)</a>
</div>
<div>
<span class="xref">System.IFormattable.ToString(System.String, System.IFormatProvider)</span>
</div>
<div>
<a class="xref" href="Lucene.Net.Support.C5.IDirectedEnumerable-1.html#Lucene_Net_Support_C5_IDirectedEnumerable_1_Direction">IDirectedEnumerable&lt;T&gt;.Direction</a>
</div>
<div>
<span class="xref">System.Collections.Generic.IEnumerable&lt;T&gt;.GetEnumerator()</span>
</div>
</div>
<h6><strong>Namespace</strong>: <a class="xref" href="Lucene.Net.Support.C5.html">Lucene.Net.Support.C5</a></h6>
<h6><strong>Assembly</strong>: Lucene.Net.dll</h6>
<h5 id="Lucene_Net_Support_C5_IDirectedCollectionValue_1_syntax">Syntax</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public interface IDirectedCollectionValue&lt;T&gt; : ICollectionValue&lt;T&gt;, IShowable, IFormattable, IDirectedEnumerable&lt;T&gt;, IEnumerable&lt;T&gt;, IEnumerable</code></pre>
</div>
<h5 class="typeParameters">Type Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="parametername">T</span></td>
<td></td>
</tr>
</tbody>
</table>
<h3 id="methods">Methods
</h3>
<span class="small pull-right mobile-hide">
<span class="divider">|</span>
<a href="https://github.com/apache/lucenenet/new/master/websites/apidocs/apiSpec/new?filename=Lucene_Net_Support_C5_IDirectedCollectionValue_1_Backwards.md&amp;value=---%0Auid%3A%20Lucene.Net.Support.C5.IDirectedCollectionValue%601.Backwards%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
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<span class="small pull-right mobile-hide">
<a href="https://github.com/Shazwazza/lucenenet/blob/doc-updates-nov/src/Lucene.Net/Support/C5.Support.cs/#L5845">View Source</a>
</span>
<a id="Lucene_Net_Support_C5_IDirectedCollectionValue_1_Backwards_" data-uid="Lucene.Net.Support.C5.IDirectedCollectionValue`1.Backwards*"></a>
<h4 id="Lucene_Net_Support_C5_IDirectedCollectionValue_1_Backwards" data-uid="Lucene.Net.Support.C5.IDirectedCollectionValue`1.Backwards">Backwards()</h4>
<div class="markdown level1 summary"><p>Create a collection containing the same items as this collection, but
whose enumerator will enumerate the items backwards. The new collection
will become invalid if the original is modified. Method typically used as in</p>
<pre><code>foreach (T x in coll.Backwards()) {...}</code></pre>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">IDirectedCollectionValue&lt;T&gt; Backwards()</code></pre>
</div>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="Lucene.Net.Support.C5.IDirectedCollectionValue-1.html">IDirectedCollectionValue</a>&lt;T&gt;</td>
<td><p>The backwards collection.</p>
</td>
</tr>
</tbody>
</table>
<span class="small pull-right mobile-hide">
<span class="divider">|</span>
<a href="https://github.com/apache/lucenenet/new/master/websites/apidocs/apiSpec/new?filename=Lucene_Net_Support_C5_IDirectedCollectionValue_1_FindLast_System_Func__0_System_Boolean___0__.md&amp;value=---%0Auid%3A%20Lucene.Net.Support.C5.IDirectedCollectionValue%601.FindLast(System.Func%7B%600%2CSystem.Boolean%7D%2C%600%40)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
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<a id="Lucene_Net_Support_C5_IDirectedCollectionValue_1_FindLast_" data-uid="Lucene.Net.Support.C5.IDirectedCollectionValue`1.FindLast*"></a>
<h4 id="Lucene_Net_Support_C5_IDirectedCollectionValue_1_FindLast_System_Func__0_System_Boolean___0__" data-uid="Lucene.Net.Support.C5.IDirectedCollectionValue`1.FindLast(System.Func{`0,System.Boolean},`0@)">FindLast(Func&lt;T, Boolean&gt;, out T)</h4>
<div class="markdown level1 summary"><p>Check if there exists an item that satisfies a
specific predicate in this collection and return the first one in enumeration order.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">bool FindLast(Func&lt;T, bool&gt; predicate, out T item)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Func</span>&lt;T, <span class="xref">System.Boolean</span>&gt;</td>
<td><span class="parametername">predicate</span></td>
<td><p>A delegate
(<span class="xref">Func`2</span> with <pre><code>R == bool</code></pre>) defining the predicate</p>
</td>
</tr>
<tr>
<td><span class="xref">T</span></td>
<td><span class="parametername">item</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Boolean</span></td>
<td><p>True is such an item exists</p>
</td>
</tr>
</tbody>
</table>
<h3 id="extensionmethods">Extension Methods</h3>
<div>
<a class="xref" href="Lucene.Net.Support.EnumerableExtensions.html#Lucene_Net_Support_EnumerableExtensions_InPairs__2_System_Collections_Generic_IEnumerable___0__System_Func___0___0___1__">EnumerableExtensions.InPairs&lt;T, TOut&gt;(IEnumerable&lt;T&gt;, Func&lt;T, T, TOut&gt;)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.Support.Number.html#Lucene_Net_Support_Number_IsNumber_System_Object_">Number.IsNumber(Object)</a>
</div>
</article>
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