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<h1>Module <a href="type_Belt_MutableQueue.html">Belt_MutableQueue</a></h1>
<pre><span id="MODULEBelt_MutableQueue"><span class="keyword">module</span> Belt_MutableQueue</span>: <code class="code">sig</code> <a href="Belt_MutableQueue.html">..</a> <code class="code">end</code></pre><div class="info module top">
<div class="not-examples">
First-in first-out queues.
This module implements queues (FIFOs), with in-place modification.<br>
</div>
</div>
<hr width="100%">
<pre><span id="TYPEt"><span class="keyword">type</span> <code class="type">'a</code> t</span> </pre>
<div class="info ">
<div class="not-examples">
The type of queues containing elements of type <code class="code">'a</code>.<br>
</div>
</div>
<pre><span id="VALmake"><span class="keyword">val</span> make</span> : <code class="type">unit -> 'a <a href="Belt_MutableQueue.html#TYPEt">t</a></code></pre><div class="info ">
<div class="not-examples">
<div class="tag"> <li><b>Returns</b> a new queue, initially empty.</li>
</div>
</div>
</div>
<pre><span id="VALclear"><span class="keyword">val</span> clear</span> : <code class="type">'a <a href="Belt_MutableQueue.html#TYPEt">t</a> -> unit</code></pre><div class="info ">
<div class="not-examples">
Discard all elements from the queue.<br>
</div>
</div>
<pre><span id="VALisEmpty"><span class="keyword">val</span> isEmpty</span> : <code class="type">'a <a href="Belt_MutableQueue.html#TYPEt">t</a> -> bool</code></pre><div class="info ">
<div class="not-examples">
<div class="tag"> <li><b>Returns</b> <code class="code">true</code> if the given queue is empty, <code class="code">false</code> otherwise.</li>
</div>
</div>
</div>
<pre><span id="VALfromArray"><span class="keyword">val</span> fromArray</span> : <code class="type">'a array -> 'a <a href="Belt_MutableQueue.html#TYPEt">t</a></code></pre><div class="info ">
<div class="not-examples">
<code class="code">fromArray a</code> is equivalent to <code class="code">Array.forEach a (add q a)</code><br>
</div>
</div>
<pre><span id="VALadd"><span class="keyword">val</span> add</span> : <code class="type">'a <a href="Belt_MutableQueue.html#TYPEt">t</a> -> 'a -> unit</code></pre><div class="info ">
<div class="not-examples">
<code class="code">add q x</code> adds the element <code class="code">x</code> at the end of the queue <code class="code">q</code>.<br>
</div>
</div>
<pre><span id="VALpeek"><span class="keyword">val</span> peek</span> : <code class="type">'a <a href="Belt_MutableQueue.html#TYPEt">t</a> -> 'a option</code></pre><div class="info ">
<div class="not-examples">
<code class="code">peekOpt q</code> returns the first element in queue <code class="code">q</code>, without removing
it from the queue.<br>
</div>
</div>
<pre><span id="VALpeekUndefined"><span class="keyword">val</span> peekUndefined</span> : <code class="type">'a <a href="Belt_MutableQueue.html#TYPEt">t</a> -> 'a <a href="Js.html#TYPEundefined">Js.undefined</a></code></pre><div class="info ">
<div class="not-examples">
<code class="code">peekUndefined q</code> returns <code class="code">undefined</code> if not found<br>
</div>
</div>
<pre><span id="VALpeekExn"><span class="keyword">val</span> peekExn</span> : <code class="type">'a <a href="Belt_MutableQueue.html#TYPEt">t</a> -> 'a</code></pre><div class="info ">
<div class="not-examples">
<code class="code">peekExn q</code>
<b>raise</b> an exception if <code class="code">q</code> is empty<br>
</div>
</div>
<pre><span id="VALpop"><span class="keyword">val</span> pop</span> : <code class="type">'a <a href="Belt_MutableQueue.html#TYPEt">t</a> -> 'a option</code></pre><div class="info ">
<div class="not-examples">
<code class="code">pop q</code> removes and returns the first element in queue <code class="code">q</code>.<br>
</div>
</div>
<pre><span id="VALpopUndefined"><span class="keyword">val</span> popUndefined</span> : <code class="type">'a <a href="Belt_MutableQueue.html#TYPEt">t</a> -> 'a <a href="Js.html#TYPEundefined">Js.undefined</a></code></pre><div class="info ">
<div class="not-examples">
<code class="code">popUndefined q</code> removes and returns the first element in queue <code class="code">q</code>.
it will return undefined if it is already empty<br>
</div>
</div>
<pre><span id="VALpopExn"><span class="keyword">val</span> popExn</span> : <code class="type">'a <a href="Belt_MutableQueue.html#TYPEt">t</a> -> 'a</code></pre><div class="info ">
<div class="not-examples">
<code class="code">popExn q</code>
<b>raise</b> an exception if <code class="code">q</code> is empty<br>
</div>
</div>
<pre><span id="VALcopy"><span class="keyword">val</span> copy</span> : <code class="type">'a <a href="Belt_MutableQueue.html#TYPEt">t</a> -> 'a <a href="Belt_MutableQueue.html#TYPEt">t</a></code></pre><div class="info ">
<div class="not-examples">
<code class="code">copy q</code><br>
<div class="tag"> <li><b>Returns</b> a fresh queue</li>
</div>
</div>
</div>
<pre><span id="VALsize"><span class="keyword">val</span> size</span> : <code class="type">'a <a href="Belt_MutableQueue.html#TYPEt">t</a> -> int</code></pre><div class="info ">
<div class="not-examples">
<div class="tag"> <li><b>Returns</b> the number of elements in a queue.</li>
</div>
</div>
</div>
<pre><span id="VALmapU"><span class="keyword">val</span> mapU</span> : <code class="type">'a <a href="Belt_MutableQueue.html#TYPEt">t</a> -> ('a -> 'b [@bs]) -> 'b <a href="Belt_MutableQueue.html#TYPEt">t</a></code></pre>
<pre><span id="VALmap"><span class="keyword">val</span> map</span> : <code class="type">'a <a href="Belt_MutableQueue.html#TYPEt">t</a> -> ('a -> 'b) -> 'b <a href="Belt_MutableQueue.html#TYPEt">t</a></code></pre>
<pre><span id="VALforEachU"><span class="keyword">val</span> forEachU</span> : <code class="type">'a <a href="Belt_MutableQueue.html#TYPEt">t</a> -> ('a -> unit [@bs]) -> unit</code></pre>
<pre><span id="VALforEach"><span class="keyword">val</span> forEach</span> : <code class="type">'a <a href="Belt_MutableQueue.html#TYPEt">t</a> -> ('a -> unit) -> unit</code></pre><div class="info ">
<div class="not-examples">
<code class="code">forEach q f</code> applies <code class="code">f</code> in turn to all elements of <code class="code">q</code>,
from the least recently entered to the most recently entered.
The queue itself is unchanged.<br>
</div>
</div>
<pre><span id="VALreduceU"><span class="keyword">val</span> reduceU</span> : <code class="type">'a <a href="Belt_MutableQueue.html#TYPEt">t</a> -> 'b -> ('b -> 'a -> 'b [@bs]) -> 'b</code></pre>
<pre><span id="VALreduce"><span class="keyword">val</span> reduce</span> : <code class="type">'a <a href="Belt_MutableQueue.html#TYPEt">t</a> -> 'b -> ('b -> 'a -> 'b) -> 'b</code></pre><div class="info ">
<div class="not-examples">
<code class="code">reduce q accu f</code> is equivalent to <code class="code">List.reduce l accu f</code>,
where <code class="code">l</code> is the list of <code class="code">q</code>'s elements. The queue remains
unchanged.<br>
</div>
</div>
<pre><span id="VALtransfer"><span class="keyword">val</span> transfer</span> : <code class="type">'a <a href="Belt_MutableQueue.html#TYPEt">t</a> -> 'a <a href="Belt_MutableQueue.html#TYPEt">t</a> -> unit</code></pre><div class="info ">
<div class="not-examples">
<code class="code">transfer q1 q2</code> adds all of <code class="code">q1</code>'s elements at the end of
the queue <code class="code">q2</code>, then clears <code class="code">q1</code>. It is equivalent to the
sequence <code class="code">forEach (fun x -> add x q2) q1; clear q1</code>, but runs
in constant time.<br>
</div>
</div>
<pre><span id="VALtoArray"><span class="keyword">val</span> toArray</span> : <code class="type">'a <a href="Belt_MutableQueue.html#TYPEt">t</a> -> 'a array</code></pre><div class="info ">
<div class="not-examples">
First added will be in the beginning of the array<br>
</div>
</div>
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