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<!doctype html>
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<head>
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<title> Belt.HashMap </title></head>
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<h1>Module <a href="type_Belt.HashMap.html">Belt.HashMap</a></h1>
<pre><span id="MODULEHashMap"><span class="keyword">module</span> HashMap</span>: <code class="type"><a href="Belt_HashMap.html">Belt_HashMap</a></code></pre><div class="info module top">
<div class="not-examples">
<a href="Belt.HashMap.html"><code class="code">Belt.HashMap</code></a>
The top level provides generic <b>mutable</b> hash map operations.
It also has two specialized inner modules
<code class="code">Belt.HashMap.Int</code> and <code class="code">Belt.HashMap.String</code><br>
</div>
</div>
<hr width="100%">
<pre><span id="MODULEInt"><span class="keyword">module</span> <a href="Belt_HashMap.Int.html">Int</a></span>: <code class="type"><a href="Belt_HashMapInt.html">Belt_HashMapInt</a></code></pre> <div class="info">
<div class="not-examples">
Specalized when key type is <code class="code">int</code>, more efficient
than the generic type<br>
</div>
</div>
<pre><span id="MODULEString"><span class="keyword">module</span> <a href="Belt_HashMap.String.html">String</a></span>: <code class="type"><a href="Belt_HashMapString.html">Belt_HashMapString</a></code></pre> <div class="info">
<div class="not-examples">
Specalized when key type is <code class="code">string</code>, more efficient
than the generic type<br>
</div>
</div>
<pre><span id="TYPEt"><span class="keyword">type</span> <code class="type">('key, 'value, 'id)</code> t</span> </pre>
<div class="info ">
<div class="not-examples">
The type of hash tables from type <code class="code">'key</code> to type <code class="code">'value</code>.<br>
</div>
</div>
<pre><span id="TYPEid"><span class="keyword">type</span> <code class="type">('a, 'id)</code> id</span> = <code class="type">('a, 'id) <a href="Belt_Id.html#TYPEhashable">Belt_Id.hashable</a></code> </pre>
<pre><span id="VALmake"><span class="keyword">val</span> make</span> : <code class="type">hintSize:int -><br> id:('key, 'id) <a href="Belt_HashMap.html#TYPEid">id</a> -> ('key, 'value, 'id) <a href="Belt_HashMap.html#TYPEt">t</a></code></pre>
<pre><span id="VALclear"><span class="keyword">val</span> clear</span> : <code class="type">('key, 'value, 'id) <a href="Belt_HashMap.html#TYPEt">t</a> -> unit</code></pre><div class="info ">
<div class="not-examples">
Empty a hash table.<br>
</div>
</div>
<pre><span id="VALisEmpty"><span class="keyword">val</span> isEmpty</span> : <code class="type">('a, 'b, 'c) <a href="Belt_HashMap.html#TYPEt">t</a> -> bool</code></pre>
<pre><span id="VALset"><span class="keyword">val</span> set</span> : <code class="type">('key, 'value, 'id) <a href="Belt_HashMap.html#TYPEt">t</a> -> 'key -> 'value -> unit</code></pre><div class="info ">
<div class="not-examples">
<code class="code">set tbl k v</code> if <code class="code">k</code> does not exist,
add the binding <code class="code">k,v</code>, otherwise, update the old value with the new
<code class="code">v</code><br>
</div>
</div>
<pre><span id="VALcopy"><span class="keyword">val</span> copy</span> : <code class="type">('key, 'value, 'id) <a href="Belt_HashMap.html#TYPEt">t</a> -> ('key, 'value, 'id) <a href="Belt_HashMap.html#TYPEt">t</a></code></pre>
<pre><span id="VALget"><span class="keyword">val</span> get</span> : <code class="type">('key, 'value, 'id) <a href="Belt_HashMap.html#TYPEt">t</a> -> 'key -> 'value option</code></pre>
<pre><span id="VALhas"><span class="keyword">val</span> has</span> : <code class="type">('key, 'value, 'id) <a href="Belt_HashMap.html#TYPEt">t</a> -> 'key -> bool</code></pre><div class="info ">
<div class="not-examples">
<code class="code">has tbl x</code> checks if <code class="code">x</code> is bound in <code class="code">tbl</code>.<br>
</div>
</div>
<pre><span id="VALremove"><span class="keyword">val</span> remove</span> : <code class="type">('key, 'value, 'id) <a href="Belt_HashMap.html#TYPEt">t</a> -> 'key -> unit</code></pre>
<pre><span id="VALforEachU"><span class="keyword">val</span> forEachU</span> : <code class="type">('key, 'value, 'id) <a href="Belt_HashMap.html#TYPEt">t</a> -> ('key -> 'value -> unit [@bs]) -> unit</code></pre>
<pre><span id="VALforEach"><span class="keyword">val</span> forEach</span> : <code class="type">('key, 'value, 'id) <a href="Belt_HashMap.html#TYPEt">t</a> -> ('key -> 'value -> unit) -> unit</code></pre><div class="info ">
<div class="not-examples">
<code class="code">forEach tbl f</code> applies <code class="code">f</code> to all bindings in table <code class="code">tbl</code>.
<code class="code">f</code> receives the key as first argument, and the associated value
as second argument. Each binding is presented exactly once to <code class="code">f</code>.<br>
</div>
</div>
<pre><span id="VALreduceU"><span class="keyword">val</span> reduceU</span> : <code class="type">('key, 'value, 'id) <a href="Belt_HashMap.html#TYPEt">t</a> -><br> 'c -> ('c -> 'key -> 'value -> 'c [@bs]) -> 'c</code></pre>
<pre><span id="VALreduce"><span class="keyword">val</span> reduce</span> : <code class="type">('key, 'value, 'id) <a href="Belt_HashMap.html#TYPEt">t</a> -><br> 'c -> ('c -> 'key -> 'value -> 'c) -> 'c</code></pre><div class="info ">
<div class="not-examples">
<code class="code">reduce tbl init f</code> computes
<code class="code">(f kN dN ... (f k1 d1 init)...)</code>,
where <code class="code">k1 ... kN</code> are the keys of all bindings in <code class="code">tbl</code>,
and <code class="code">d1 ... dN</code> are the associated values.
Each binding is presented exactly once to <code class="code">f</code>.
The order in which the bindings are passed to <code class="code">f</code> is unspecified.
However, if the table contains several bindings for the same key,
they are passed to <code class="code">f</code> in reverse order of introduction, that is,
the most recent binding is passed first.<br>
</div>
</div>
<pre><span id="VALkeepMapInPlaceU"><span class="keyword">val</span> keepMapInPlaceU</span> : <code class="type">('key, 'value, 'id) <a href="Belt_HashMap.html#TYPEt">t</a> -><br> ('key -> 'value -> 'value option [@bs]) -> unit</code></pre>
<pre><span id="VALkeepMapInPlace"><span class="keyword">val</span> keepMapInPlace</span> : <code class="type">('key, 'value, 'id) <a href="Belt_HashMap.html#TYPEt">t</a> -><br> ('key -> 'value -> 'value option) -> unit</code></pre>
<pre><span id="VALsize"><span class="keyword">val</span> size</span> : <code class="type">('a, 'b, 'c) <a href="Belt_HashMap.html#TYPEt">t</a> -> int</code></pre><div class="info ">
<div class="not-examples">
<code class="code">size tbl</code> returns the number of bindings in <code class="code">tbl</code>.
It takes constant time.<br>
</div>
</div>
<pre><span id="VALtoArray"><span class="keyword">val</span> toArray</span> : <code class="type">('key, 'value, 'id) <a href="Belt_HashMap.html#TYPEt">t</a> -> ('key * 'value) array</code></pre>
<pre><span id="VALkeysToArray"><span class="keyword">val</span> keysToArray</span> : <code class="type">('key, 'a, 'b) <a href="Belt_HashMap.html#TYPEt">t</a> -> 'key array</code></pre>
<pre><span id="VALvaluesToArray"><span class="keyword">val</span> valuesToArray</span> : <code class="type">('a, 'value, 'b) <a href="Belt_HashMap.html#TYPEt">t</a> -> 'value array</code></pre>
<pre><span id="VALfromArray"><span class="keyword">val</span> fromArray</span> : <code class="type">('key * 'value) array -><br> id:('key, 'id) <a href="Belt_HashMap.html#TYPEid">id</a> -> ('key, 'value, 'id) <a href="Belt_HashMap.html#TYPEt">t</a></code></pre>
<pre><span id="VALmergeMany"><span class="keyword">val</span> mergeMany</span> : <code class="type">('key, 'value, 'id) <a href="Belt_HashMap.html#TYPEt">t</a> -> ('key * 'value) array -> unit</code></pre>
<pre><span id="VALgetBucketHistogram"><span class="keyword">val</span> getBucketHistogram</span> : <code class="type">('a, 'b, 'c) <a href="Belt_HashMap.html#TYPEt">t</a> -> int array</code></pre>
<pre><span id="VALlogStats"><span class="keyword">val</span> logStats</span> : <code class="type">('a, 'b, 'c) <a href="Belt_HashMap.html#TYPEt">t</a> -> unit</code></pre></body></html>