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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<title>Array.ImmutableProjection (core 4.1 API)</title>
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<h2 title="Class Array.ImmutableProjection" class="title">Class Array.ImmutableProjection<A></h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
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<ul class="inheritance">
<li>fj.data.Array.ImmutableProjection<A></li>
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<dt>All Implemented Interfaces:</dt>
<dd>java.lang.Iterable<A></dd>
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<dl>
<dt>Enclosing class:</dt>
<dd><a href="../../fj/data/Array.html" title="class in fj.data">Array</a><<a href="../../fj/data/Array.html" title="type parameter in Array">A</a>></dd>
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<pre>public final class <span class="typeNameLabel">Array.ImmutableProjection<A></span>
extends java.lang.Object
implements java.lang.Iterable<A></pre>
<div class="block">Projects an array by providing only operations which do not mutate.</div>
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<h3>Method Summary</h3>
<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr id="i0" class="altColor">
<td class="colFirst"><code><a href="../../fj/data/Array.html" title="class in fj.data">Array</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../fj/data/Array.ImmutableProjection.html#append-fj.data.Array-">append</a></span>(<a href="../../fj/data/Array.html" title="class in fj.data">Array</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>> aas)</code>
<div class="block">Appends the given array to this array.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code><B> <a href="../../fj/data/Array.html" title="class in fj.data">Array</a><B></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../fj/data/Array.ImmutableProjection.html#apply-fj.data.Array-">apply</a></span>(<a href="../../fj/data/Array.html" title="class in fj.data">Array</a><<a href="../../fj/F.html" title="interface in fj">F</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>,B>> lf)</code>
<div class="block">Performs function application within an array (applicative functor pattern).</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><B> <a href="../../fj/data/Array.html" title="class in fj.data">Array</a><B></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../fj/data/Array.ImmutableProjection.html#bind-fj.F-">bind</a></span>(<a href="../../fj/F.html" title="interface in fj">F</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>,<a href="../../fj/data/Array.html" title="class in fj.data">Array</a><B>> f)</code>
<div class="block">Binds the given function across each element of this array with a final join.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../fj/data/Array.html" title="class in fj.data">Array</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../fj/data/Array.ImmutableProjection.html#filter-fj.F-">filter</a></span>(<a href="../../fj/F.html" title="interface in fj">F</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>,java.lang.Boolean> f)</code>
<div class="block">Filters elements from this array by returning only elements which produce <code>true</code>
when the given function is applied to them.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><B> B</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../fj/data/Array.ImmutableProjection.html#foldLeft-fj.F-B-">foldLeft</a></span>(<a href="../../fj/F.html" title="interface in fj">F</a><B,<a href="../../fj/F.html" title="interface in fj">F</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>,B>> f,
B b)</code>
<div class="block">Performs a left-fold reduction across this array.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code><B> B</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../fj/data/Array.ImmutableProjection.html#foldRight-fj.F-B-">foldRight</a></span>(<a href="../../fj/F.html" title="interface in fj">F</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>,<a href="../../fj/F.html" title="interface in fj">F</a><B,B>> f,
B b)</code>
<div class="block">Performs a right-fold reduction across this array.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="../../fj/Unit.html" title="class in fj">Unit</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../fj/data/Array.ImmutableProjection.html#foreach-fj.F-">foreach</a></span>(<a href="../../fj/F.html" title="interface in fj">F</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>,<a href="../../fj/Unit.html" title="class in fj">Unit</a>> f)</code>
<div class="block">Performs a side-effect for each element of this array.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code><a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../fj/data/Array.ImmutableProjection.html#get-int-">get</a></span>(int index)</code>
<div class="block">Returns the element at the given index if it exists, fails otherwise.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../fj/data/Array.ImmutableProjection.html#isEmpty--">isEmpty</a></span>()</code>
<div class="block">Returns <code>true</code> is this array is empty, <code>false</code> otherwise.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../fj/data/Array.ImmutableProjection.html#isNotEmpty--">isNotEmpty</a></span>()</code>
<div class="block">Returns <code>false</code> is this array is empty, <code>true</code> otherwise.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>java.util.Iterator<<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../fj/data/Array.ImmutableProjection.html#iterator--">iterator</a></span>()</code>
<div class="block">Returns an iterator for this array.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../fj/data/Array.ImmutableProjection.html#length--">length</a></span>()</code>
<div class="block">Returns the length of this array.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code><B> <a href="../../fj/data/Array.html" title="class in fj.data">Array</a><B></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../fj/data/Array.ImmutableProjection.html#map-fj.F-">map</a></span>(<a href="../../fj/F.html" title="interface in fj">F</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>,B> f)</code>
<div class="block">Maps the given function across this array.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code><a href="../../fj/data/Array.html" title="class in fj.data">Array</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../fj/data/Array.ImmutableProjection.html#reverse--">reverse</a></span>()</code>
<div class="block">Reverse this array in constant stack space.</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code><B> <a href="../../fj/data/Array.html" title="class in fj.data">Array</a><B></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../fj/data/Array.ImmutableProjection.html#sequence-fj.data.Array-">sequence</a></span>(<a href="../../fj/data/Array.html" title="class in fj.data">Array</a><B> bs)</code>
<div class="block">Performs a bind across each array element, but ignores the element value each time.</div>
</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code>java.util.Collection<<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../fj/data/Array.ImmutableProjection.html#toCollection--">toCollection</a></span>()</code>
<div class="block">Projects an immutable collection of this array.</div>
</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code><X> <a href="../../fj/data/Either.html" title="class in fj.data">Either</a><X,<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../fj/data/Array.ImmutableProjection.html#toEither-fj.P1-">toEither</a></span>(<a href="../../fj/P1.html" title="interface in fj">P1</a><X> x)</code>
<div class="block">Returns an either projection of this array; the given argument in <code>Left</code> if empty,
or the first element in <code>Right</code>.</div>
</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code><a href="../../fj/data/List.html" title="class in fj.data">List</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../fj/data/Array.ImmutableProjection.html#toList--">toList</a></span>()</code>
<div class="block">Returns a list projection of this array.</div>
</td>
</tr>
<tr id="i18" class="altColor">
<td class="colFirst"><code><a href="../../fj/data/Option.html" title="class in fj.data">Option</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../fj/data/Array.ImmutableProjection.html#toOption--">toOption</a></span>()</code>
<div class="block">Returns an option projection of this array; <code>None</code> if empty, or the first element
in <code>Some</code>.</div>
</td>
</tr>
<tr id="i19" class="rowColor">
<td class="colFirst"><code><a href="../../fj/data/Stream.html" title="class in fj.data">Stream</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../fj/data/Array.ImmutableProjection.html#toStream--">toStream</a></span>()</code>
<div class="block">Returns a stream projection of this array.</div>
</td>
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<h3>Methods inherited from class java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<h3>Methods inherited from interface java.lang.Iterable</h3>
<code>forEach, spliterator</code></li>
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<h4>iterator</h4>
<pre>public java.util.Iterator<<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>> iterator()</pre>
<div class="block">Returns an iterator for this array. This method exists to permit the use in a <code>for</code>-each loop.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>iterator</code> in interface <code>java.lang.Iterable<<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A iterator for this array.</dd>
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<h4>get</h4>
<pre>public <a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a> get(int index)</pre>
<div class="block">Returns the element at the given index if it exists, fails otherwise.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>index</code> - The index at which to get the element to return.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The element at the given index if it exists, fails otherwise.</dd>
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<pre>public int length()</pre>
<div class="block">Returns the length of this array.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The length of this array.</dd>
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<pre>public boolean isEmpty()</pre>
<div class="block">Returns <code>true</code> is this array is empty, <code>false</code> otherwise.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd><code>true</code> is this array is empty, <code>false</code> otherwise.</dd>
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<pre>public boolean isNotEmpty()</pre>
<div class="block">Returns <code>false</code> is this array is empty, <code>true</code> otherwise.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd><code>false</code> is this array is empty, <code>true</code> otherwise.</dd>
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<pre>public <a href="../../fj/data/Option.html" title="class in fj.data">Option</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>> toOption()</pre>
<div class="block">Returns an option projection of this array; <code>None</code> if empty, or the first element
in <code>Some</code>.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>An option projection of this array.</dd>
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<h4>toEither</h4>
<pre>public <X> <a href="../../fj/data/Either.html" title="class in fj.data">Either</a><X,<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>> toEither(<a href="../../fj/P1.html" title="interface in fj">P1</a><X> x)</pre>
<div class="block">Returns an either projection of this array; the given argument in <code>Left</code> if empty,
or the first element in <code>Right</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>x</code> - The value to return in left if this array is empty.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>An either projection of this array.</dd>
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<pre>public <a href="../../fj/data/List.html" title="class in fj.data">List</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>> toList()</pre>
<div class="block">Returns a list projection of this array.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A list projection of this array.</dd>
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<pre>public <a href="../../fj/data/Stream.html" title="class in fj.data">Stream</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>> toStream()</pre>
<div class="block">Returns a stream projection of this array.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A stream projection of this array.</dd>
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<h4>map</h4>
<pre>public <B> <a href="../../fj/data/Array.html" title="class in fj.data">Array</a><B> map(<a href="../../fj/F.html" title="interface in fj">F</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>,B> f)</pre>
<div class="block">Maps the given function across this array.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>f</code> - The function to map across this array.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A new array after the given function has been applied to each element.</dd>
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<pre>public <a href="../../fj/data/Array.html" title="class in fj.data">Array</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>> filter(<a href="../../fj/F.html" title="interface in fj">F</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>,java.lang.Boolean> f)</pre>
<div class="block">Filters elements from this array by returning only elements which produce <code>true</code>
when the given function is applied to them.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>f</code> - The predicate function to filter on.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A new array whose elements all match the given predicate.</dd>
</dl>
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<h4>foreach</h4>
<pre>public <a href="../../fj/Unit.html" title="class in fj">Unit</a> foreach(<a href="../../fj/F.html" title="interface in fj">F</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>,<a href="../../fj/Unit.html" title="class in fj">Unit</a>> f)</pre>
<div class="block">Performs a side-effect for each element of this array.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>f</code> - The side-effect to perform for the given element.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The unit value.</dd>
</dl>
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<pre>public <B> B foldRight(<a href="../../fj/F.html" title="interface in fj">F</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>,<a href="../../fj/F.html" title="interface in fj">F</a><B,B>> f,
B b)</pre>
<div class="block">Performs a right-fold reduction across this array. This function uses O(length) stack space.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>f</code> - The function to apply on each element of the array.</dd>
<dd><code>b</code> - The beginning value to start the application from.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The final result after the right-fold reduction.</dd>
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<pre>public <B> B foldLeft(<a href="../../fj/F.html" title="interface in fj">F</a><B,<a href="../../fj/F.html" title="interface in fj">F</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>,B>> f,
B b)</pre>
<div class="block">Performs a left-fold reduction across this array. This function runs in constant space.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>f</code> - The function to apply on each element of the array.</dd>
<dd><code>b</code> - The beginning value to start the application from.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The final result after the left-fold reduction.</dd>
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<pre>public <B> <a href="../../fj/data/Array.html" title="class in fj.data">Array</a><B> bind(<a href="../../fj/F.html" title="interface in fj">F</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>,<a href="../../fj/data/Array.html" title="class in fj.data">Array</a><B>> f)</pre>
<div class="block">Binds the given function across each element of this array with a final join.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>f</code> - The function to apply to each element of this array.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A new array after performing the map, then final join.</dd>
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<pre>public <B> <a href="../../fj/data/Array.html" title="class in fj.data">Array</a><B> sequence(<a href="../../fj/data/Array.html" title="class in fj.data">Array</a><B> bs)</pre>
<div class="block">Performs a bind across each array element, but ignores the element value each time.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>bs</code> - The array to apply in the final join.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A new array after the final join.</dd>
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<pre>public <B> <a href="../../fj/data/Array.html" title="class in fj.data">Array</a><B> apply(<a href="../../fj/data/Array.html" title="class in fj.data">Array</a><<a href="../../fj/F.html" title="interface in fj">F</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>,B>> lf)</pre>
<div class="block">Performs function application within an array (applicative functor pattern).</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>lf</code> - The array of functions to apply.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A new array after applying the given array of functions through this array.</dd>
</dl>
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<h4>reverse</h4>
<pre>public <a href="../../fj/data/Array.html" title="class in fj.data">Array</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>> reverse()</pre>
<div class="block">Reverse this array in constant stack space.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A new array that is the reverse of this one.</dd>
</dl>
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<h4>append</h4>
<pre>public <a href="../../fj/data/Array.html" title="class in fj.data">Array</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>> append(<a href="../../fj/data/Array.html" title="class in fj.data">Array</a><<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>> aas)</pre>
<div class="block">Appends the given array to this array.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>aas</code> - The array to append to this one.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A new array that has appended the given array.</dd>
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<h4>toCollection</h4>
<pre>public java.util.Collection<<a href="../../fj/data/Array.ImmutableProjection.html" title="type parameter in Array.ImmutableProjection">A</a>> toCollection()</pre>
<div class="block">Projects an immutable collection of this array.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>An immutable collection of this array.</dd>
</dl>
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