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<!doctype html>
<html>
<head>
<link rel="stylesheet" href="../api_static/tomorrow-night.css">
<link rel="stylesheet" href="../api_static/style.css" type="text/css">
<script src="../api_static//highlight.pack.js"></script>
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<title> Belt_internalMapString.A </title></head>
<body>
<nav class="module-index"><ul><li><a href="Belt.html">Belt</a></li>
<li><a href="Belt_Array.html">Belt_Array</a></li>
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<li><a href="Belt_HashMapInt.html">Belt_HashMapInt</a></li>
<li><a href="Belt_HashMapString.html">Belt_HashMapString</a></li>
<li><a href="Belt_HashSet.html">Belt_HashSet</a></li>
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<li><a href="Belt_Id.html">Belt_Id</a></li>
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<li><a href="Belt_MutableMap.html">Belt_MutableMap</a></li>
<li><a href="Belt_MutableMapInt.html">Belt_MutableMapInt</a></li>
<li><a href="Belt_MutableMapString.html">Belt_MutableMapString</a></li>
<li><a href="Belt_MutableQueue.html">Belt_MutableQueue</a></li>
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<h1>Module <a href="type_Belt_internalMapString.A.html">Belt_internalMapString.A</a></h1>
<pre><span class="keyword">module</span> A: <code class="type"><a href="Belt_Array.html">Belt_Array</a></code></pre><hr width="100%">
<pre><span id="VALlength"><span class="keyword">val</span> length</span> : <code class="type">'a array -> int</code></pre><div class="info ">
<div class="not-examples">
<code class="code">length xs</code> return the size of the array<br>
</div>
</div>
<pre><span id="VALsize"><span class="keyword">val</span> size</span> : <code class="type">'a array -> int</code></pre><div class="info ">
<div class="not-examples">
<b>See</b> <a href="Belt_Array.html#VALlength"><code class="code">Belt_Array.length</code></a><br>
</div>
</div>
<pre><span id="VALget"><span class="keyword">val</span> get</span> : <code class="type">'a array -> int -> 'a option</code></pre>
<pre><span id="VALgetExn"><span class="keyword">val</span> getExn</span> : <code class="type">'a array -> int -> 'a</code></pre><div class="info ">
<div class="not-examples">
<code class="code">getExn arr i</code>
<p>
<b>raise</b> an exception if <code class="code">i</code> is out of range<br>
</div>
</div>
<pre><span id="VALgetUnsafe"><span class="keyword">val</span> getUnsafe</span> : <code class="type">'a array -> int -> 'a</code></pre><div class="info ">
<div class="not-examples">
<code class="code">getUnasfe arr i</code>
<p>
<b>Unsafe</b>
<p>
no bounds checking, this would cause type error
if <code class="code">i</code> does not stay within range<br>
</div>
</div>
<pre><span id="VALgetUndefined"><span class="keyword">val</span> getUndefined</span> : <code class="type">'a array -> int -> 'a <a href="Js.html#TYPEundefined">Js.undefined</a></code></pre><div class="info ">
<div class="not-examples">
<code class="code">getUndefined arr i</code>
<p>
It does the samething in the runtime as <a href="Belt_Array.html#VALgetUnsafe"><code class="code">Belt_Array.getUnsafe</code></a>,
it is <i>type safe</i> since the return type still track whether it is
in range or not<br>
</div>
</div>
<pre><span id="VALset"><span class="keyword">val</span> set</span> : <code class="type">'a array -> int -> 'a -> bool</code></pre><div class="info ">
<div class="not-examples">
<code class="code">set arr n x</code> modifies <code class="code">arr</code> in place,
it replaces the nth element of <code class="code">arr</code> with <code class="code">x</code><br>
<div class="tag"> <b>Returns</b> false means not updated due to out of range<br>
</div>
</div>
</div>
<pre><span id="VALsetExn"><span class="keyword">val</span> setExn</span> : <code class="type">'a array -> int -> 'a -> unit</code></pre><div class="info ">
<div class="not-examples">
<code class="code">setExn arr i x</code>
<b>raise</b> an exception if <code class="code">i</code> is out of range<br>
</div>
</div>
<pre><span id="VALsetUnsafe"><span class="keyword">val</span> setUnsafe</span> : <code class="type">'a array -> int -> 'a -> unit</code></pre>
<pre><span id="VALshuffleInPlace"><span class="keyword">val</span> shuffleInPlace</span> : <code class="type">'a array -> unit</code></pre>
<pre><span id="VALshuffle"><span class="keyword">val</span> shuffle</span> : <code class="type">'a array -> 'a array</code></pre><div class="info ">
<div class="not-examples">
<code class="code">shuffle xs</code><br>
<div class="tag"> <b>Returns</b> a fresh array<br>
</div>
</div>
</div>
<pre><span id="VALreverseInPlace"><span class="keyword">val</span> reverseInPlace</span> : <code class="type">'a array -> unit</code></pre>
<pre><span id="VALreverse"><span class="keyword">val</span> reverse</span> : <code class="type">'a array -> 'a array</code></pre><div class="info ">
<div class="not-examples">
<code class="code">reverse x</code><br>
<div class="tag"> <b>Returns</b> a fresh array<br>
</div>
</div>
</div>
<pre><span id="VALmakeUninitialized"><span class="keyword">val</span> makeUninitialized</span> : <code class="type">int -> 'a <a href="Js.html#TYPEundefined">Js.undefined</a> array</code></pre>
<pre><span id="VALmakeUninitializedUnsafe"><span class="keyword">val</span> makeUninitializedUnsafe</span> : <code class="type">int -> 'a array</code></pre><div class="info ">
<div class="not-examples">
<code class="code">makeUninitializedUnsafe n</code>
<p>
<b>Unsafe</b><br>
</div>
</div>
<pre><span id="VALmake"><span class="keyword">val</span> make</span> : <code class="type">int -> 'a -> 'a array</code></pre><div class="info ">
<div class="not-examples">
<code class="code">make n e</code>
return an array of size <code class="code">n</code> filled with value <code class="code">e</code><br>
<div class="tag"> <b>Returns</b> an empty array when <code class="code">n</code> is negative.<br>
</div>
</div>
</div>
<pre><span id="VALrange"><span class="keyword">val</span> range</span> : <code class="type">int -> int -> int array</code></pre><div class="info ">
<div class="not-examples">
<code class="code">range start finish</code> create an inclusive array<br>
</div>
<div class="examples">
<pre class="example"> <pre class="codepre"><code class="code"> range 0 3 = [|0;1;2;3|];;
range 3 0 = [||] ;;
range 3 3 = [|3|];;
</code></pre> </pre>
</div>
</div>
<pre><span id="VALrangeBy"><span class="keyword">val</span> rangeBy</span> : <code class="type">int -> int -> step:int -> int array</code></pre><div class="info ">
<div class="not-examples">
<code class="code">rangeBy start finish ~step</code><br>
<div class="tag"> <b>Returns</b> empty array when step is 0 or negative
it also return empty array when <code class="code">start > finish</code><br>
</div>
</div>
<div class="examples">
<pre class="example"> <pre class="codepre"><code class="code"> rangeBy 0 10 ~step:3 = [|0;3;6;9|];;
rangeBy 0 12 ~step:3 = [|0;3;6;9;12|];;
rangeBy 33 0 ~step:1 = [||];;
rangeBy 33 0 ~step:(-1) = [||];;
rangeBy 3 12 ~step:(-1) = [||];;
rangeBy 3 3 ~step:0 = [||] ;;
rangeBy 3 3 ~step:(1) = [|3|] ;;
</code></pre> </pre>
</div>
</div>
<pre><span id="VALmakeByU"><span class="keyword">val</span> makeByU</span> : <code class="type">int -> (int -> 'a [@bs]) -> 'a array</code></pre>
<pre><span id="VALmakeBy"><span class="keyword">val</span> makeBy</span> : <code class="type">int -> (int -> 'a) -> 'a array</code></pre><div class="info ">
<div class="not-examples">
<code class="code">makeBy n f</code>
<p>
return an empty array when <code class="code">n</code> is negative
return an array of size <code class="code">n</code> populated by <code class="code">f i</code> start from <code class="code">0</code> to <code class="code">n - 1</code><br>
</div>
<div class="examples">
<pre class="example"> <pre class="codepre"><code class="code"> makeBy 5 (fun i -> i) = [|0;1;2;3;4|]
</code></pre> </pre>
</div>
</div>
<pre><span id="VALmakeByAndShuffleU"><span class="keyword">val</span> makeByAndShuffleU</span> : <code class="type">int -> (int -> 'a [@bs]) -> 'a array</code></pre>
<pre><span id="VALmakeByAndShuffle"><span class="keyword">val</span> makeByAndShuffle</span> : <code class="type">int -> (int -> 'a) -> 'a array</code></pre><div class="info ">
<div class="not-examples">
<code class="code">makeByAndShuffle n f</code>
<p>
Equivalent to <code class="code">shuffle (makeBy n f)</code><br>
</div>
</div>
<pre><span id="VALzip"><span class="keyword">val</span> zip</span> : <code class="type">'a array -> 'b array -> ('a * 'b) array</code></pre><div class="info ">
<div class="not-examples">
<code class="code">zip a b</code>
<p>
Stop with the shorter array<br>
</div>
<div class="examples">
<pre class="example"> <pre class="codepre"><code class="code"> zip [|1;2] [|1;2;3|] = [| (1,2); (2;2)|]
</code></pre> </pre>
</div>
</div>
<pre><span id="VALzipByU"><span class="keyword">val</span> zipByU</span> : <code class="type">'a array -> 'b array -> ('a -> 'b -> 'c [@bs]) -> 'c array</code></pre>
<pre><span id="VALzipBy"><span class="keyword">val</span> zipBy</span> : <code class="type">'a array -> 'b array -> ('a -> 'b -> 'c) -> 'c array</code></pre><div class="info ">
<div class="not-examples">
<code class="code">zipBy xs ys f</code>
<p>
Stops with shorter array
<p>
Equivalent to <code class="code">map (zip xs ys) (fun (a,b) -> f a b) </code><br>
</div>
</div>
<pre><span id="VALconcat"><span class="keyword">val</span> concat</span> : <code class="type">'a array -> 'a array -> 'a array</code></pre><div class="info ">
<div class="not-examples">
<code class="code">concat xs ys</code><br>
<div class="tag"> <b>Returns</b> a fresh array containing the
concatenation of the arrays <code class="code">v1</code> and <code class="code">v2</code>, so even if <code class="code">v1</code> or <code class="code">v2</code>
is empty, it can not be shared<br>
</div>
</div>
</div>
<pre><span id="VALconcatMany"><span class="keyword">val</span> concatMany</span> : <code class="type">'a array array -> 'a array</code></pre><div class="info ">
<div class="not-examples">
<code class="code">concatMany xss</code><br>
<div class="tag"> <b>Returns</b> a fresh array as the concatenation of <code class="code">xss</code><br>
</div>
</div>
</div>
<pre><span id="VALslice"><span class="keyword">val</span> slice</span> : <code class="type">'a array -> offset:int -> len:int -> 'a array</code></pre><div class="info ">
<div class="not-examples">
<code class="code">slice arr offset len</code>
<p>
<code class="code">offset</code> can be negative,
<code class="code">slice arr -1 1</code> means get the last element as a singleton array
<p>
<code class="code">slice arr -(very_large_index) len</code> will do a copy of the array
<p>
if the array does not have enough data, <code class="code">slice</code> extracts through
the end of sequence<br>
</div>
</div>
<pre><span id="VALcopy"><span class="keyword">val</span> copy</span> : <code class="type">'a array -> 'a array</code></pre><div class="info ">
<div class="not-examples">
<code class="code">copy a</code><br>
<div class="tag"> <b>Returns</b> a copy of <code class="code">a</code>, that is, a fresh array
containing the same elements as <code class="code">a</code>.<br>
</div>
</div>
</div>
<pre><span id="VALfill"><span class="keyword">val</span> fill</span> : <code class="type">'a array -> offset:int -> len:int -> 'a -> unit</code></pre><div class="info ">
<div class="not-examples">
<code class="code">fill arr ~offset ~len x</code>
<p>
Modifies <code class="code">arr</code> in place,
storing <code class="code">x</code> in elements number <code class="code">offset</code> to <code class="code">offset + len - 1</code>.
<p>
<code class="code">offset</code> can be negative
<p>
<code class="code">fill arr offset:(-1) len:1 </code> means fill the last element,
if the array does not have enough data, <code class="code">fill</code> will ignore it<br>
</div>
<div class="examples">
<pre class="example"> <pre class="codepre"><code class="code"> let arr = makeBy 5 (fun i -> i) ;;
fill arr ~offset:2 ~len:2 0 ;;
arr = [|0;1;0;0;4|];;
</code></pre> </pre>
</div>
</div>
<pre><span id="VALblit"><span class="keyword">val</span> blit</span> : <code class="type">src:'a array -><br> srcOffset:int -> dst:'a array -> dstOffset:int -> len:int -> unit</code></pre><div class="info ">
<div class="not-examples">
<code class="code">blit ~src:v1 ~srcOffset:o1 ~dst:v2 ~dstOffset:o2 ~len</code>
<p>
copies <code class="code">len</code> elements
from array <code class="code">v1</code>, starting at element number <code class="code">o1</code>, to array <code class="code">v2</code>,
starting at element number <code class="code">o2</code>.
<p>
It works correctly even if
<code class="code">v1</code> and <code class="code">v2</code> are the same array, and the source and
destination chunks overlap.
<p>
<code class="code">offset</code> can be negative, <code class="code">-1</code> means <code class="code">len - 1</code>, if <code class="code">len + offset</code> is still
negative, it will be set as 0<br>
</div>
</div>
<pre><span id="VALblitUnsafe"><span class="keyword">val</span> blitUnsafe</span> : <code class="type">src:'a array -><br> srcOffset:int -> dst:'a array -> dstOffset:int -> len:int -> unit</code></pre><div class="info ">
<div class="not-examples">
<b>Unsafe</b> blit without bounds checking<br>
</div>
</div>
<pre><span id="VALforEachU"><span class="keyword">val</span> forEachU</span> : <code class="type">'a array -> ('a -> unit [@bs]) -> unit</code></pre>
<pre><span id="VALforEach"><span class="keyword">val</span> forEach</span> : <code class="type">'a array -> ('a -> unit) -> unit</code></pre><div class="info ">
<div class="not-examples">
<code class="code">forEach xs f</code>
<p>
Call f on each element of <code class="code">xs</code> from the beginning to end<br>
</div>
</div>
<pre><span id="VALmapU"><span class="keyword">val</span> mapU</span> : <code class="type">'a array -> ('a -> 'b [@bs]) -> 'b array</code></pre>
<pre><span id="VALmap"><span class="keyword">val</span> map</span> : <code class="type">'a array -> ('a -> 'b) -> 'b array</code></pre><div class="info ">
<div class="not-examples">
<code class="code">map xs f </code><br>
<div class="tag"> <b>Returns</b> a new array by calling <code class="code">f</code> to element of <code class="code">xs</code> from
the beginning to end<br>
</div>
</div>
</div>
<pre><span id="VALkeepU"><span class="keyword">val</span> keepU</span> : <code class="type">'a array -> ('a -> bool [@bs]) -> 'a array</code></pre>
<pre><span id="VALkeep"><span class="keyword">val</span> keep</span> : <code class="type">'a array -> ('a -> bool) -> 'a array</code></pre><div class="info ">
<div class="not-examples">
<code class="code">keep xs p </code><br>
<div class="tag"> <b>Returns</b> a new array that keep all elements satisfy <code class="code">p</code><br>
</div>
</div>
<div class="examples">
<pre class="example"> <pre class="codepre"><code class="code"> keep [|1;2;3|] (fun x -> x mod 2 = 0) = [|2|]
</code></pre> </pre>
</div>
</div>
<pre><span id="VALkeepMapU"><span class="keyword">val</span> keepMapU</span> : <code class="type">'a array -> ('a -> 'b option [@bs]) -> 'b array</code></pre>
<pre><span id="VALkeepMap"><span class="keyword">val</span> keepMap</span> : <code class="type">'a array -> ('a -> 'b option) -> 'b array</code></pre><div class="info ">
<div class="not-examples">
<code class="code">keepMap xs p</code><br>
<div class="tag"> <b>Returns</b> a new array that keep all elements that return a non-None applied <code class="code">p</code><br>
</div>
</div>
<div class="examples">
<pre class="example"> <pre class="codepre"><code class="code"> keepMap [|1;2;3|] (fun x -> if x mod 2 then Some x else None)
= [| 2 |]
</code></pre> </pre>
</div>
</div>
<pre><span id="VALforEachWithIndexU"><span class="keyword">val</span> forEachWithIndexU</span> : <code class="type">'a array -> (int -> 'a -> unit [@bs]) -> unit</code></pre>
<pre><span id="VALforEachWithIndex"><span class="keyword">val</span> forEachWithIndex</span> : <code class="type">'a array -> (int -> 'a -> unit) -> unit</code></pre><div class="info ">
<div class="not-examples">
<code class="code">forEachWithIndex xs f</code>
<p>
The same with <a href="Belt_Array.html#VALforEach"><code class="code">Belt_Array.forEach</code></a>, except that <code class="code">f</code> is supplied with one
more argument: the index starting from 0<br>
</div>
</div>
<pre><span id="VALmapWithIndexU"><span class="keyword">val</span> mapWithIndexU</span> : <code class="type">'a array -> (int -> 'a -> 'b [@bs]) -> 'b array</code></pre>
<pre><span id="VALmapWithIndex"><span class="keyword">val</span> mapWithIndex</span> : <code class="type">'a array -> (int -> 'a -> 'b) -> 'b array</code></pre><div class="info ">
<div class="not-examples">
<code class="code">mapWithIndex xs f </code>
<p>
The same with <a href="Belt_Array.html#VALmap"><code class="code">Belt_Array.map</code></a> except that <code class="code">f</code> is supplied with one
more argument: the index starting from 0<br>
</div>
</div>
<pre><span id="VALreduceU"><span class="keyword">val</span> reduceU</span> : <code class="type">'b array -> 'a -> ('a -> 'b -> 'a [@bs]) -> 'a</code></pre>
<pre><span id="VALreduce"><span class="keyword">val</span> reduce</span> : <code class="type">'b array -> 'a -> ('a -> 'b -> 'a) -> 'a</code></pre><div class="info ">
<div class="not-examples">
<code class="code">reduce xs init f</code><br>
</div>
<div class="examples">
<pre class="example"> <pre class="codepre"><code class="code"> reduce [|2;3;4|] 1 (+) = 10
</code></pre> </pre>
</div>
</div>
<pre><span id="VALreduceReverseU"><span class="keyword">val</span> reduceReverseU</span> : <code class="type">'b array -> 'a -> ('a -> 'b -> 'a [@bs]) -> 'a</code></pre>
<pre><span id="VALreduceReverse"><span class="keyword">val</span> reduceReverse</span> : <code class="type">'b array -> 'a -> ('a -> 'b -> 'a) -> 'a</code></pre><div class="info ">
<div class="not-examples">
<code class="code">reduceReverse xs init f</code><br>
</div>
<div class="examples">
<pre class="example"> <pre class="codepre"><code class="code"> reduceReverse [|1;2;3;4|] 100 (-) = 90
</code></pre> </pre>
</div>
</div>
<pre><span id="VALreduceReverse2U"><span class="keyword">val</span> reduceReverse2U</span> : <code class="type">'a array -> 'b array -> 'c -> ('c -> 'a -> 'b -> 'c [@bs]) -> 'c</code></pre>
<pre><span id="VALreduceReverse2"><span class="keyword">val</span> reduceReverse2</span> : <code class="type">'a array -> 'b array -> 'c -> ('c -> 'a -> 'b -> 'c) -> 'c</code></pre><div class="info ">
<div class="not-examples">
</div>
<div class="examples">
<pre class="example"> <pre class="codepre"><code class="code"> reduceReverse2 [|1;2;3|] [|1;2|] 0 (fun acc x y -> acc + x + y) = 6
</code></pre> </pre>
</div>
</div>
<pre><span id="VALsomeU"><span class="keyword">val</span> someU</span> : <code class="type">'a array -> ('a -> bool [@bs]) -> bool</code></pre>
<pre><span id="VALsome"><span class="keyword">val</span> some</span> : <code class="type">'a array -> ('a -> bool) -> bool</code></pre><div class="info ">
<div class="not-examples">
<code class="code">some xs p</code><br>
<div class="tag"> <b>Returns</b> true if one of element satifies <code class="code">p</code><br>
</div>
</div>
</div>
<pre><span id="VALeveryU"><span class="keyword">val</span> everyU</span> : <code class="type">'a array -> ('a -> bool [@bs]) -> bool</code></pre>
<pre><span id="VALevery"><span class="keyword">val</span> every</span> : <code class="type">'a array -> ('a -> bool) -> bool</code></pre><div class="info ">
<div class="not-examples">
<code class="code">every xs p</code><br>
<div class="tag"> <b>Returns</b> true if all elements satisfy <code class="code">p</code><br>
</div>
</div>
</div>
<pre><span id="VALevery2U"><span class="keyword">val</span> every2U</span> : <code class="type">'a array -> 'b array -> ('a -> 'b -> bool [@bs]) -> bool</code></pre>
<pre><span id="VALevery2"><span class="keyword">val</span> every2</span> : <code class="type">'a array -> 'b array -> ('a -> 'b -> bool) -> bool</code></pre><div class="info ">
<div class="not-examples">
<code class="code">every2 xs ys p</code> only tests the length of shorter<br>
</div>
<div class="examples">
<pre class="example"> <pre class="codepre"><code class="code"> every2 [|1;2;3|] [|0;1|] (>) = true;;
(every2 [||] [|1|] (fun x y -> x > y)) = true;;
(every2 [|2;3|] [|1|] (fun x y -> x > y)) = true;;
</code></pre> </pre>
</div>
</div>
<pre><span id="VALsome2U"><span class="keyword">val</span> some2U</span> : <code class="type">'a array -> 'b array -> ('a -> 'b -> bool [@bs]) -> bool</code></pre>
<pre><span id="VALsome2"><span class="keyword">val</span> some2</span> : <code class="type">'a array -> 'b array -> ('a -> 'b -> bool) -> bool</code></pre><div class="info ">
<div class="not-examples">
<code class="code">some2 xs ys p</code> only tests the length of shorter<br>
</div>
<div class="examples">
<pre class="example"> <pre class="codepre"><code class="code"> some2 [|0;2|] [|1;0;3|] (>) = true ;;
(some2 [||] [|1|] (fun x y -> x > y)) = false;;
(some2 [|2;3|] [|1;4|] (fun x y -> x > y)) = true;;
</code></pre> </pre>
</div>
</div>
<pre><span id="VALcmpU"><span class="keyword">val</span> cmpU</span> : <code class="type">'a array -> 'a array -> ('a -> 'a -> int [@bs]) -> int</code></pre>
<pre><span id="VALcmp"><span class="keyword">val</span> cmp</span> : <code class="type">'a array -> 'a array -> ('a -> 'a -> int) -> int</code></pre><div class="info ">
<div class="not-examples">
<code class="code">cmp a b</code>
<p>
<ul>
<li>Compared by length if <code class="code">length a <> length b</code> </li>
<li>Otherwise compare one by one <code class="code">f ai bi</code></li>
</ul>
<br>
</div>
</div>
<pre><span id="VALeqU"><span class="keyword">val</span> eqU</span> : <code class="type">'a array -> 'a array -> ('a -> 'a -> bool [@bs]) -> bool</code></pre>
<pre><span id="VALeq"><span class="keyword">val</span> eq</span> : <code class="type">'a array -> 'a array -> ('a -> 'a -> bool) -> bool</code></pre><div class="info ">
<div class="not-examples">
<code class="code">eq a b</code>
<p>
<ul>
<li>return false if length is not the same</li>
<li>equal one by one using <code class="code">f ai bi</code></li>
</ul>
<br>
</div>
</div>
<pre><span id="VALtruncateToLengthUnsafe"><span class="keyword">val</span> truncateToLengthUnsafe</span> : <code class="type">'a array -> int -> unit</code></pre><div class="info ">
<div class="not-examples">
<b>Unsafe</b><br>
</div>
</div>
</body></html>