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      <h1 class="title">std/jsonutils</h1>
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  <li>
  <a class="reference reference-toplevel" href="#6" id="56">Imports</a>
</li>
<li>
  <details open>
    <summary><a class="reference reference-toplevel" href="#7" id="57">Types</a></summary>
    <ul class="simple simple-toc-section">
      <li><a class="reference" href="#EnumMode" title="EnumMode = enum
  joptEnumOrd, joptEnumSymbol, joptEnumString">EnumMode</a></li>
<li><a class="reference" href="#Joptions" title="Joptions = object
  allowExtraKeys*: bool ## If `true` Nim's object to which the JSON is parsed is not required to
                        ## have a field for every JSON key.
  allowMissingKeys*: bool ## If `true` Nim's object to which JSON is parsed is allowed to have
                          ## fields without corresponding JSON keys.">Joptions</a></li>
<li><a class="reference" href="#JsonNodeMode" title="JsonNodeMode = enum
  joptJsonNodeAsRef,        ## returns the ref as is
  joptJsonNodeAsCopy,       ## returns a deep copy of the JsonNode
  joptJsonNodeAsObject       ## treats JsonNode as a regular ref object">JsonNodeMode</a></li>
<li><a class="reference" href="#ToJsonOptions" title="ToJsonOptions = object
  enumMode*: EnumMode
  jsonNodeMode*: JsonNodeMode">ToJsonOptions</a></li>

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  <details open>
    <summary><a class="reference reference-toplevel" href="#12" id="62">Procs</a></summary>
    <ul class="simple simple-toc-section">
      <ul class="simple nested-toc-section">fromJson
  <li><a class="reference" href="#fromJson%2CT%2CJsonNode" title="fromJson[T](a: var T; b: JsonNode; opt = Joptions())">fromJson[T](a: var T; b: JsonNode; opt = Joptions())</a></li>

</ul>
<ul class="simple nested-toc-section">fromJsonHook
  <li><a class="reference" href="#fromJsonHook%2CStringTableRef%2CJsonNode" title="fromJsonHook(a: var StringTableRef; b: JsonNode)">fromJsonHook(a: var StringTableRef; b: JsonNode)</a></li>
<li><a class="reference" href="#fromJsonHook%2CSomeSet%5BA%5D%2CJsonNode" title="fromJsonHook[A](s: var SomeSet[A]; jsonNode: JsonNode; opt = Joptions())">fromJsonHook[A](s: var SomeSet[A]; jsonNode: JsonNode; opt = Joptions())</a></li>
<li><a class="reference" href="#fromJsonHook%2C%2CJsonNode" title="fromJsonHook[K: string | cstring; V](t: var (Table[K, V] | OrderedTable[K, V]);
                                     jsonNode: JsonNode; opt = Joptions())">fromJsonHook[K: string | cstring; V](t: var (Table[K, V] | OrderedTable[K, V]);
                                     jsonNode: JsonNode; opt = Joptions())</a></li>
<li><a class="reference" href="#fromJsonHook%2COption%5BT%5D%2CJsonNode" title="fromJsonHook[T](self: var Option[T]; jsonNode: JsonNode; opt = Joptions())">fromJsonHook[T](self: var Option[T]; jsonNode: JsonNode; opt = Joptions())</a></li>

</ul>
<ul class="simple nested-toc-section">initToJsonOptions
  <li><a class="reference" href="#initToJsonOptions" title="initToJsonOptions(): ToJsonOptions">initToJsonOptions(): ToJsonOptions</a></li>

</ul>
<ul class="simple nested-toc-section">jsonTo
  <li><a class="reference" href="#jsonTo%2CJsonNode%2Ctypedesc" title="jsonTo(b: JsonNode; T: typedesc; opt = Joptions()): T:type">jsonTo(b: JsonNode; T: typedesc; opt = Joptions()): T:type</a></li>

</ul>
<ul class="simple nested-toc-section">toJson
  <li><a class="reference" href="#toJson%2CT" title="toJson[T](a: T; opt = initToJsonOptions()): JsonNode">toJson[T](a: T; opt = initToJsonOptions()): JsonNode</a></li>

</ul>
<ul class="simple nested-toc-section">toJsonHook
  <li><a class="reference" href="#toJsonHook%2CStringTableRef" title="toJsonHook(a: StringTableRef): JsonNode">toJsonHook(a: StringTableRef): JsonNode</a></li>
<li><a class="reference" href="#toJsonHook%2CSomeSet%5BA%5D" title="toJsonHook[A](s: SomeSet[A]; opt = initToJsonOptions()): JsonNode">toJsonHook[A](s: SomeSet[A]; opt = initToJsonOptions()): JsonNode</a></li>
<li><a class="reference" href="#toJsonHook" title="toJsonHook[K: string | cstring; V](t: (Table[K, V] | OrderedTable[K, V]);
                                   opt = initToJsonOptions()): JsonNode">toJsonHook[K: string | cstring; V](t: (Table[K, V] | OrderedTable[K, V]);
                                   opt = initToJsonOptions()): JsonNode</a></li>
<li><a class="reference" href="#toJsonHook%2COption%5BT%5D" title="toJsonHook[T](self: Option[T]; opt = initToJsonOptions()): JsonNode">toJsonHook[T](self: Option[T]; opt = initToJsonOptions()): JsonNode</a></li>

</ul>

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  </details>
</li>

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  </div>
  <div class="nine columns" id="content">
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/jsonutils.nim#L1" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/jsonutils.nim#L1" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

    <div id="tocRoot"></div>
    
    <p class="module-desc">This module implements a hookable (de)serialization for arbitrary types using JSON. Design goal: avoid importing modules where a custom serialization is needed; see strtabs.fromJsonHook,toJsonHook for an example. 
<p><strong class="examples_text">Example:</strong></p>
<pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Identifier">jsonutils</span>
<span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Punctuation">[</span><span class="Identifier">strtabs</span><span class="Punctuation">,</span><span class="Identifier">json</span><span class="Punctuation">]</span>
<span class="Keyword">type</span> <span class="Identifier">Foo</span> <span class="Operator">=</span> <span class="Keyword">ref</span> <span class="Keyword">object</span>
  <span class="Identifier">t</span><span class="Punctuation">:</span> <span class="Identifier">bool</span>
  <span class="Identifier">z1</span><span class="Punctuation">:</span> <span class="Identifier">int8</span>
<span class="Keyword">let</span> <span class="Identifier">a</span> <span class="Operator">=</span> <span class="Punctuation">(</span><span class="FloatNumber">1.5'f32</span><span class="Punctuation">,</span> <span class="Punctuation">(</span><span class="Identifier">b</span><span class="Punctuation">:</span> <span class="StringLit">&quot;b2&quot;</span><span class="Punctuation">,</span> <span class="Identifier">a</span><span class="Punctuation">:</span> <span class="StringLit">&quot;a2&quot;</span><span class="Punctuation">)</span><span class="Punctuation">,</span> <span class="CharLit">'x'</span><span class="Punctuation">,</span> <span class="Operator">@</span><span class="Punctuation">[</span><span class="Identifier">Foo</span><span class="Punctuation">(</span><span class="Identifier">t</span><span class="Punctuation">:</span> <span class="Identifier">true</span><span class="Punctuation">,</span> <span class="Identifier">z1</span><span class="Punctuation">:</span> <span class="Operator">-</span><span class="DecNumber">3</span><span class="Punctuation">)</span><span class="Punctuation">,</span> <span class="Keyword">nil</span><span class="Punctuation">]</span><span class="Punctuation">,</span> <span class="Punctuation">[</span><span class="Punctuation">{</span><span class="StringLit">&quot;name&quot;</span><span class="Punctuation">:</span> <span class="StringLit">&quot;John&quot;</span><span class="Punctuation">}</span><span class="Operator">.</span><span class="Identifier">newStringTable</span><span class="Punctuation">]</span><span class="Punctuation">)</span>
<span class="Keyword">let</span> <span class="Identifier">j</span> <span class="Operator">=</span> <span class="Identifier">a</span><span class="Operator">.</span><span class="Identifier">toJson</span>
<span class="Identifier">assert</span> <span class="Identifier">j</span><span class="Operator">.</span><span class="Identifier">jsonTo</span><span class="Punctuation">(</span><span class="Identifier">typeof</span><span class="Punctuation">(</span><span class="Identifier">a</span><span class="Punctuation">)</span><span class="Punctuation">)</span><span class="Operator">.</span><span class="Identifier">toJson</span> <span class="Operator">==</span> <span class="Identifier">j</span>
<span class="Identifier">assert</span> <span class="Operator">$</span><span class="Punctuation">[</span><span class="Identifier">NaN</span><span class="Punctuation">,</span> <span class="Identifier">Inf</span><span class="Punctuation">,</span> <span class="Operator">-</span><span class="Identifier">Inf</span><span class="Punctuation">,</span> <span class="FloatNumber">0.0</span><span class="Punctuation">,</span> <span class="Operator">-</span><span class="FloatNumber">0.0</span><span class="Punctuation">,</span> <span class="FloatNumber">1.0</span><span class="Punctuation">,</span> <span class="FloatNumber">1e-2</span><span class="Punctuation">]</span><span class="Operator">.</span><span class="Identifier">toJson</span> <span class="Operator">==</span> <span class="LongStringLit">&quot;&quot;&quot;[&quot;nan&quot;,&quot;inf&quot;,&quot;-inf&quot;,0.0,-0.0,1.0,0.01]&quot;&quot;&quot;</span>
<span class="Identifier">assert</span> <span class="FloatNumber">0.0</span><span class="Operator">.</span><span class="Identifier">toJson</span><span class="Operator">.</span><span class="Identifier">kind</span> <span class="Operator">==</span> <span class="Identifier">JFloat</span>
<span class="Identifier">assert</span> <span class="Identifier">Inf</span><span class="Operator">.</span><span class="Identifier">toJson</span><span class="Operator">.</span><span class="Identifier">kind</span> <span class="Operator">==</span> <span class="Identifier">JString</span></pre></p>
    <div class="section" id="6">
  <h1><a class="toc-backref" href="#6">Imports</a></h1>
  <dl class="item">
    <a class="reference external" href="json.html">json</a>, <a class="reference external" href="strutils.html">strutils</a>, <a class="reference external" href="tables.html">tables</a>, <a class="reference external" href="sets.html">sets</a>, <a class="reference external" href="strtabs.html">strtabs</a>, <a class="reference external" href="options.html">options</a>, <a class="reference external" href="macros.html">macros</a>, <a class="reference external" href="enumutils.html">enumutils</a>, <a class="reference external" href="typetraits.html">typetraits</a>, <a class="reference external" href="assertions.html">assertions</a>
  </dl>
</div>
<div class="section" id="7">
  <h1><a class="toc-backref" href="#7">Types</a></h1>
  <dl class="item">
    <div id="EnumMode">
  <dt><pre><a href="jsonutils.html#EnumMode"><span class="Identifier">EnumMode</span></a> <span class="Other">=</span> <span class="Keyword">enum</span>
  <span class="Identifier">joptEnumOrd</span><span class="Other">,</span> <span class="Identifier">joptEnumSymbol</span><span class="Other">,</span> <span class="Identifier">joptEnumString</span></pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/jsonutils.nim#L53" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/jsonutils.nim#L53" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>
<div id="Joptions">
  <dt><pre><a href="jsonutils.html#Joptions"><span class="Identifier">Joptions</span></a> <span class="Other">=</span> <span class="Keyword">object</span>
  <span class="Identifier">allowExtraKeys</span><span class="Operator">*</span><span class="Other">:</span> <a href="system.html#bool"><span class="Identifier">bool</span></a> <span class="Comment">## If `true` Nim's object to which the JSON is parsed is not required to</span>
                        <span class="Comment">## have a field for every JSON key.</span>
  <span class="Identifier">allowMissingKeys</span><span class="Operator">*</span><span class="Other">:</span> <a href="system.html#bool"><span class="Identifier">bool</span></a> <span class="Comment">## If `true` Nim's object to which JSON is parsed is allowed to have</span>
                          <span class="Comment">## fields without corresponding JSON keys.</span></pre></dt>
  <dd>
    
    Options controlling the behavior of <tt class="docutils literal"><span class="pre"><span class="Identifier">fromJson</span></span></tt>.
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/jsonutils.nim#L44" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/jsonutils.nim#L44" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>
<div id="JsonNodeMode">
  <dt><pre><a href="jsonutils.html#JsonNodeMode"><span class="Identifier">JsonNodeMode</span></a> <span class="Other">=</span> <span class="Keyword">enum</span>
  <span class="Identifier">joptJsonNodeAsRef</span><span class="Other">,</span>        <span class="Comment">## returns the ref as is</span>
  <span class="Identifier">joptJsonNodeAsCopy</span><span class="Other">,</span>       <span class="Comment">## returns a deep copy of the JsonNode</span>
  <span class="Identifier">joptJsonNodeAsObject</span>       <span class="Comment">## treats JsonNode as a regular ref object</span></pre></dt>
  <dd>
    
    controls <tt class="docutils literal"><span class="pre"><span class="Identifier">toJson</span></span></tt> for JsonNode types
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/jsonutils.nim#L57" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/jsonutils.nim#L57" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>
<div id="ToJsonOptions">
  <dt><pre><a href="jsonutils.html#ToJsonOptions"><span class="Identifier">ToJsonOptions</span></a> <span class="Other">=</span> <span class="Keyword">object</span>
  <span class="Identifier">enumMode</span><span class="Operator">*</span><span class="Other">:</span> <a href="jsonutils.html#EnumMode"><span class="Identifier">EnumMode</span></a>
  <span class="Identifier">jsonNodeMode</span><span class="Operator">*</span><span class="Other">:</span> <a href="jsonutils.html#JsonNodeMode"><span class="Identifier">JsonNodeMode</span></a></pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/jsonutils.nim#L61" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/jsonutils.nim#L61" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

  </dl>
</div>
<div class="section" id="12">
  <h1><a class="toc-backref" href="#12">Procs</a></h1>
  <dl class="item">
    <div id="fromJson-procs-all">
  <div id="fromJson,T,JsonNode">
  <dt><pre><span class="Keyword">proc</span> <a href="#fromJson%2CT%2CJsonNode"><span class="Identifier">fromJson</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">a</span><span class="Other">:</span> <span class="Keyword">var</span> <span class="Identifier">T</span><span class="Other">;</span> <span class="Identifier">b</span><span class="Other">:</span> <a href="json.html#JsonNode"><span class="Identifier">JsonNode</span></a><span class="Other">;</span> <span class="Identifier">opt</span> <span class="Other">=</span> <a href="jsonutils.html#Joptions"><span class="Identifier">Joptions</span></a><span class="Other">(</span><span class="Other">)</span><span class="Other">)</span></pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/jsonutils.nim#L183" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/jsonutils.nim#L183" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

</div>
<div id="fromJsonHook-procs-all">
  <div id="fromJsonHook,StringTableRef,JsonNode">
  <dt><pre><span class="Keyword">proc</span> <a href="#fromJsonHook%2CStringTableRef%2CJsonNode"><span class="Identifier">fromJsonHook</span></a><span class="Other">(</span><span class="Identifier">a</span><span class="Other">:</span> <span class="Keyword">var</span> <a href="strtabs.html#StringTableRef"><span class="Identifier">StringTableRef</span></a><span class="Other">;</span> <span class="Identifier">b</span><span class="Other">:</span> <a href="json.html#JsonNode"><span class="Identifier">JsonNode</span></a><span class="Other">)</span> {.
    <span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Identifier">ValueError</span><span class="Other">,</span> <span class="Identifier">KeyError</span><span class="Other">,</span> <span class="Identifier">JsonKindError</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Identifier">RootEffect</span><span class="Other">]</span><span class="Other">,</span>
    <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    <p>Enables <tt class="docutils literal"><span class="pre"><span class="Identifier">fromJson</span></span></tt> for <tt class="docutils literal"><span class="pre"><span class="Identifier">StringTableRef</span></span></tt> type.</p>
<p>See also:</p>
<ul class="simple"><li><a class="reference external" href="#toJsonHook,StringTableRef">toJsonHook proc</a></li>
</ul>

<p><strong class="examples_text">Example:</strong></p>
<pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Punctuation">[</span><span class="Identifier">strtabs</span><span class="Punctuation">,</span> <span class="Identifier">json</span><span class="Punctuation">]</span>
<span class="Keyword">var</span> <span class="Identifier">t</span> <span class="Operator">=</span> <span class="Identifier">newStringTable</span><span class="Punctuation">(</span><span class="Identifier">modeCaseSensitive</span><span class="Punctuation">)</span>
<span class="Keyword">let</span> <span class="Identifier">jsonStr</span> <span class="Operator">=</span> <span class="LongStringLit">&quot;&quot;&quot;{&quot;mode&quot;: 0, &quot;table&quot;: {&quot;name&quot;: &quot;John&quot;, &quot;surname&quot;: &quot;Doe&quot;}}&quot;&quot;&quot;</span>
<span class="Identifier">fromJsonHook</span><span class="Punctuation">(</span><span class="Identifier">t</span><span class="Punctuation">,</span> <span class="Identifier">parseJson</span><span class="Punctuation">(</span><span class="Identifier">jsonStr</span><span class="Punctuation">)</span><span class="Punctuation">)</span>
<span class="Identifier">assert</span> <span class="Identifier">t</span><span class="Punctuation">[</span><span class="Punctuation">]</span> <span class="Operator">==</span> <span class="Identifier">newStringTable</span><span class="Punctuation">(</span><span class="StringLit">&quot;name&quot;</span><span class="Punctuation">,</span> <span class="StringLit">&quot;John&quot;</span><span class="Punctuation">,</span> <span class="StringLit">&quot;surname&quot;</span><span class="Punctuation">,</span> <span class="StringLit">&quot;Doe&quot;</span><span class="Punctuation">,</span>
                             <span class="Identifier">modeCaseSensitive</span><span class="Punctuation">)</span><span class="Punctuation">[</span><span class="Punctuation">]</span></pre>
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/jsonutils.nim#L462" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/jsonutils.nim#L462" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>
<div id="fromJsonHook,SomeSet[A],JsonNode">
  <dt><pre><span class="Keyword">proc</span> <a href="#fromJsonHook%2CSomeSet%5BA%5D%2CJsonNode"><span class="Identifier">fromJsonHook</span></a><span class="Other">[</span><span class="Identifier">A</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">s</span><span class="Other">:</span> <span class="Keyword">var</span> <a href="sets.html#SomeSet"><span class="Identifier">SomeSet</span></a><span class="Other">[</span><span class="Identifier">A</span><span class="Other">]</span><span class="Other">;</span> <span class="Identifier">jsonNode</span><span class="Other">:</span> <a href="json.html#JsonNode"><span class="Identifier">JsonNode</span></a><span class="Other">;</span> <span class="Identifier">opt</span> <span class="Other">=</span> <a href="jsonutils.html#Joptions"><span class="Identifier">Joptions</span></a><span class="Other">(</span><span class="Other">)</span><span class="Other">)</span></pre></dt>
  <dd>
    
    <p>Enables <tt class="docutils literal"><span class="pre"><span class="Identifier">fromJson</span></span></tt> for <tt class="docutils literal"><span class="pre"><span class="Identifier">HashSet</span></span></tt> and <tt class="docutils literal"><span class="pre"><span class="Identifier">OrderedSet</span></span></tt> types.</p>
<p>See also:</p>
<ul class="simple"><li><a class="reference external" href="#toJsonHook,SomeSet[A]">toJsonHook proc</a></li>
</ul>

<p><strong class="examples_text">Example:</strong></p>
<pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Punctuation">[</span><span class="Identifier">sets</span><span class="Punctuation">,</span> <span class="Identifier">json</span><span class="Punctuation">]</span>
<span class="Keyword">var</span> <span class="Identifier">foo</span><span class="Punctuation">:</span> <span class="Keyword">tuple</span><span class="Punctuation">[</span><span class="Identifier">hs</span><span class="Punctuation">:</span> <span class="Identifier">HashSet</span><span class="Punctuation">[</span><span class="Identifier">string</span><span class="Punctuation">]</span><span class="Punctuation">,</span> <span class="Identifier">os</span><span class="Punctuation">:</span> <span class="Identifier">OrderedSet</span><span class="Punctuation">[</span><span class="Identifier">string</span><span class="Punctuation">]</span><span class="Punctuation">]</span>
<span class="Identifier">fromJson</span><span class="Punctuation">(</span><span class="Identifier">foo</span><span class="Punctuation">,</span> <span class="Identifier">parseJson</span><span class="Punctuation">(</span><span class="LongStringLit">&quot;&quot;&quot;
      {&quot;hs&quot;: [&quot;hash&quot;, &quot;set&quot;], &quot;os&quot;: [&quot;ordered&quot;, &quot;set&quot;]}&quot;&quot;&quot;</span><span class="Punctuation">)</span><span class="Punctuation">)</span>
<span class="Identifier">assert</span> <span class="Identifier">foo</span><span class="Operator">.</span><span class="Identifier">hs</span> <span class="Operator">==</span> <span class="Punctuation">[</span><span class="StringLit">&quot;hash&quot;</span><span class="Punctuation">,</span> <span class="StringLit">&quot;set&quot;</span><span class="Punctuation">]</span><span class="Operator">.</span><span class="Identifier">toHashSet</span>
<span class="Identifier">assert</span> <span class="Identifier">foo</span><span class="Operator">.</span><span class="Identifier">os</span> <span class="Operator">==</span> <span class="Punctuation">[</span><span class="StringLit">&quot;ordered&quot;</span><span class="Punctuation">,</span> <span class="StringLit">&quot;set&quot;</span><span class="Punctuation">]</span><span class="Operator">.</span><span class="Identifier">toOrderedSet</span></pre>
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/jsonutils.nim#L393" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/jsonutils.nim#L393" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>
<div id="fromJsonHook,,JsonNode">
  <dt><pre><span class="Keyword">proc</span> <a href="#fromJsonHook%2C%2CJsonNode"><span class="Identifier">fromJsonHook</span></a><span class="Other">[</span><span class="Identifier">K</span><span class="Other">:</span> <a href="system.html#string"><span class="Identifier">string</span></a> <span class="Operator">|</span> <a href="system.html#cstring"><span class="Identifier">cstring</span></a><span class="Other">;</span> <span class="Identifier">V</span><span class="Other">]</span><span class="Other">(</span>
    <span class="Identifier">t</span><span class="Other">:</span> <span class="Keyword">var</span> <span class="Other">(</span><a href="tables.html#Table"><span class="Identifier">Table</span></a><span class="Other">[</span><span class="Identifier">K</span><span class="Other">,</span> <span class="Identifier">V</span><span class="Other">]</span> <span class="Operator">|</span> <a href="tables.html#OrderedTable"><span class="Identifier">OrderedTable</span></a><span class="Other">[</span><span class="Identifier">K</span><span class="Other">,</span> <span class="Identifier">V</span><span class="Other">]</span><span class="Other">)</span><span class="Other">;</span> <span class="Identifier">jsonNode</span><span class="Other">:</span> <a href="json.html#JsonNode"><span class="Identifier">JsonNode</span></a><span class="Other">;</span>
    <span class="Identifier">opt</span> <span class="Other">=</span> <a href="jsonutils.html#Joptions"><span class="Identifier">Joptions</span></a><span class="Other">(</span><span class="Other">)</span><span class="Other">)</span></pre></dt>
  <dd>
    
    <p>Enables <tt class="docutils literal"><span class="pre"><span class="Identifier">fromJson</span></span></tt> for <tt class="docutils literal"><span class="pre"><span class="Identifier">Table</span></span></tt> and <tt class="docutils literal"><span class="pre"><span class="Identifier">OrderedTable</span></span></tt> types.</p>
<p>See also:</p>
<ul class="simple"><li><a class="reference external" href="#toJsonHook">toJsonHook proc</a></li>
</ul>

<p><strong class="examples_text">Example:</strong></p>
<pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Punctuation">[</span><span class="Identifier">tables</span><span class="Punctuation">,</span> <span class="Identifier">json</span><span class="Punctuation">]</span>
<span class="Keyword">var</span> <span class="Identifier">foo</span><span class="Punctuation">:</span> <span class="Keyword">tuple</span><span class="Punctuation">[</span><span class="Identifier">t</span><span class="Punctuation">:</span> <span class="Identifier">Table</span><span class="Punctuation">[</span><span class="Identifier">string</span><span class="Punctuation">,</span> <span class="Identifier">int</span><span class="Punctuation">]</span><span class="Punctuation">,</span> <span class="Identifier">ot</span><span class="Punctuation">:</span> <span class="Identifier">OrderedTable</span><span class="Punctuation">[</span><span class="Identifier">string</span><span class="Punctuation">,</span> <span class="Identifier">int</span><span class="Punctuation">]</span><span class="Punctuation">]</span>
<span class="Identifier">fromJson</span><span class="Punctuation">(</span><span class="Identifier">foo</span><span class="Punctuation">,</span> <span class="Identifier">parseJson</span><span class="Punctuation">(</span><span class="LongStringLit">&quot;&quot;&quot;
      {&quot;t&quot;:{&quot;two&quot;:2,&quot;one&quot;:1},&quot;ot&quot;:{&quot;one&quot;:1,&quot;three&quot;:3}}&quot;&quot;&quot;</span><span class="Punctuation">)</span><span class="Punctuation">)</span>
<span class="Identifier">assert</span> <span class="Identifier">foo</span><span class="Operator">.</span><span class="Identifier">t</span> <span class="Operator">==</span> <span class="Punctuation">[</span><span class="Punctuation">(</span><span class="StringLit">&quot;one&quot;</span><span class="Punctuation">,</span> <span class="DecNumber">1</span><span class="Punctuation">)</span><span class="Punctuation">,</span> <span class="Punctuation">(</span><span class="StringLit">&quot;two&quot;</span><span class="Punctuation">,</span> <span class="DecNumber">2</span><span class="Punctuation">)</span><span class="Punctuation">]</span><span class="Operator">.</span><span class="Identifier">toTable</span>
<span class="Identifier">assert</span> <span class="Identifier">foo</span><span class="Operator">.</span><span class="Identifier">ot</span> <span class="Operator">==</span> <span class="Punctuation">[</span><span class="Punctuation">(</span><span class="StringLit">&quot;one&quot;</span><span class="Punctuation">,</span> <span class="DecNumber">1</span><span class="Punctuation">)</span><span class="Punctuation">,</span> <span class="Punctuation">(</span><span class="StringLit">&quot;three&quot;</span><span class="Punctuation">,</span> <span class="DecNumber">3</span><span class="Punctuation">)</span><span class="Punctuation">]</span><span class="Operator">.</span><span class="Identifier">toOrderedTable</span></pre>
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/jsonutils.nim#L351" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/jsonutils.nim#L351" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>
<div id="fromJsonHook,Option[T],JsonNode">
  <dt><pre><span class="Keyword">proc</span> <a href="#fromJsonHook%2COption%5BT%5D%2CJsonNode"><span class="Identifier">fromJsonHook</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">self</span><span class="Other">:</span> <span class="Keyword">var</span> <a href="options.html#Option"><span class="Identifier">Option</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">;</span> <span class="Identifier">jsonNode</span><span class="Other">:</span> <a href="json.html#JsonNode"><span class="Identifier">JsonNode</span></a><span class="Other">;</span> <span class="Identifier">opt</span> <span class="Other">=</span> <a href="jsonutils.html#Joptions"><span class="Identifier">Joptions</span></a><span class="Other">(</span><span class="Other">)</span><span class="Other">)</span></pre></dt>
  <dd>
    
    <p>Enables <tt class="docutils literal"><span class="pre"><span class="Identifier">fromJson</span></span></tt> for <tt class="docutils literal"><span class="pre"><span class="Identifier">Option</span></span></tt> types.</p>
<p>See also:</p>
<ul class="simple"><li><a class="reference external" href="#toJsonHook,Option[T]">toJsonHook proc</a></li>
</ul>

<p><strong class="examples_text">Example:</strong></p>
<pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Punctuation">[</span><span class="Identifier">options</span><span class="Punctuation">,</span> <span class="Identifier">json</span><span class="Punctuation">]</span>
<span class="Keyword">var</span> <span class="Identifier">opt</span><span class="Punctuation">:</span> <span class="Identifier">Option</span><span class="Punctuation">[</span><span class="Identifier">string</span><span class="Punctuation">]</span>
<span class="Identifier">fromJsonHook</span><span class="Punctuation">(</span><span class="Identifier">opt</span><span class="Punctuation">,</span> <span class="Identifier">parseJson</span><span class="Punctuation">(</span><span class="StringLit">&quot;</span><span class="EscapeSequence">\&quot;</span><span class="StringLit">test</span><span class="EscapeSequence">\&quot;</span><span class="StringLit">&quot;</span><span class="Punctuation">)</span><span class="Punctuation">)</span>
<span class="Identifier">assert</span> <span class="Identifier">get</span><span class="Punctuation">(</span><span class="Identifier">opt</span><span class="Punctuation">)</span> <span class="Operator">==</span> <span class="StringLit">&quot;test&quot;</span>
<span class="Identifier">fromJson</span><span class="Punctuation">(</span><span class="Identifier">opt</span><span class="Punctuation">,</span> <span class="Identifier">parseJson</span><span class="Punctuation">(</span><span class="StringLit">&quot;null&quot;</span><span class="Punctuation">)</span><span class="Punctuation">)</span>
<span class="Identifier">assert</span> <span class="Identifier">isNone</span><span class="Punctuation">(</span><span class="Identifier">opt</span><span class="Punctuation">)</span></pre>
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/jsonutils.nim#L427" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/jsonutils.nim#L427" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

</div>
<div id="initToJsonOptions-procs-all">
  <div id="initToJsonOptions">
  <dt><pre><span class="Keyword">proc</span> <a href="#initToJsonOptions"><span class="Identifier">initToJsonOptions</span></a><span class="Other">(</span><span class="Other">)</span><span class="Other">:</span> <a href="jsonutils.html#ToJsonOptions"><span class="Identifier">ToJsonOptions</span></a> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    initializes <tt class="docutils literal"><span class="pre"><span class="Identifier">ToJsonOptions</span></span></tt> with sane options.
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/jsonutils.nim#L66" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/jsonutils.nim#L66" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

</div>
<div id="jsonTo-procs-all">
  <div id="jsonTo,JsonNode,typedesc">
  <dt><pre><span class="Keyword">proc</span> <a href="#jsonTo%2CJsonNode%2Ctypedesc"><span class="Identifier">jsonTo</span></a><span class="Other">(</span><span class="Identifier">b</span><span class="Other">:</span> <a href="json.html#JsonNode"><span class="Identifier">JsonNode</span></a><span class="Other">;</span> <span class="Identifier">T</span><span class="Other">:</span> <a href="system.html#typedesc"><span class="Identifier">typedesc</span></a><span class="Other">;</span> <span class="Identifier">opt</span> <span class="Other">=</span> <a href="jsonutils.html#Joptions"><span class="Identifier">Joptions</span></a><span class="Other">(</span><span class="Other">)</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">T:type</span></pre></dt>
  <dd>
    
    
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/jsonutils.nim#L208" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/jsonutils.nim#L208" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

</div>
<div id="toJson-procs-all">
  <div id="toJson,T">
  <dt><pre><span class="Keyword">proc</span> <a href="#toJson%2CT"><span class="Identifier">toJson</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">a</span><span class="Other">:</span> <span class="Identifier">T</span><span class="Other">;</span> <span class="Identifier">opt</span> <span class="Other">=</span> <span class="Identifier">initToJsonOptions</span><span class="Other">(</span><span class="Other">)</span><span class="Other">)</span><span class="Other">:</span> <a href="json.html#JsonNode"><span class="Identifier">JsonNode</span></a></pre></dt>
  <dd>
    
    serializes <tt class="docutils literal"><span class="pre"><span class="Identifier">a</span></span></tt> to json; uses <tt class="docutils literal"><span class="pre"><span class="Identifier">toJsonHook</span><span class="Punctuation">(</span><span class="Identifier">a</span><span class="Punctuation">:</span> <span class="Identifier">T</span><span class="Punctuation">)</span></span></tt> if it's in scope to customize serialization, see strtabs.toJsonHook for an example.<div class="admonition admonition-info"><span class="admonition-info-text"><b>Note:</b></span>
With <tt class="docutils literal"><span class="pre"><span class="Operator">-</span><span class="Identifier">d</span><span class="Punctuation">:</span><span class="Identifier">nimPreviewJsonutilsHoleyEnum</span></span></tt>, <tt class="docutils literal"><span class="pre"><span class="Identifier">toJson</span></span></tt> now can serialize/deserialize holey enums as regular enums (via <tt class="docutils literal"><span class="pre"><span class="Identifier">ord</span></span></tt>) instead of as strings. It is expected that this behavior becomes the new default in upcoming versions.</div>

    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/jsonutils.nim#L301" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/jsonutils.nim#L301" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

</div>
<div id="toJsonHook-procs-all">
  <div id="toJsonHook,StringTableRef">
  <dt><pre><span class="Keyword">proc</span> <a href="#toJsonHook%2CStringTableRef"><span class="Identifier">toJsonHook</span></a><span class="Other">(</span><span class="Identifier">a</span><span class="Other">:</span> <a href="strtabs.html#StringTableRef"><span class="Identifier">StringTableRef</span></a><span class="Other">)</span><span class="Other">:</span> <a href="json.html#JsonNode"><span class="Identifier">JsonNode</span></a> {.<span><span class="Other pragmadots">...</span></span><span class="pragmawrap"><span class="Identifier">raises</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">tags</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span><span class="Other">,</span> <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
  <dd>
    
    <p>Enables <tt class="docutils literal"><span class="pre"><span class="Identifier">toJson</span></span></tt> for <tt class="docutils literal"><span class="pre"><span class="Identifier">StringTableRef</span></span></tt> type.</p>
<p>See also:</p>
<ul class="simple"><li><a class="reference external" href="#fromJsonHook,StringTableRef,JsonNode">fromJsonHook proc</a></li>
</ul>

<p><strong class="examples_text">Example:</strong></p>
<pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Punctuation">[</span><span class="Identifier">strtabs</span><span class="Punctuation">,</span> <span class="Identifier">json</span><span class="Punctuation">]</span>
<span class="Keyword">let</span> <span class="Identifier">t</span> <span class="Operator">=</span> <span class="Identifier">newStringTable</span><span class="Punctuation">(</span><span class="StringLit">&quot;name&quot;</span><span class="Punctuation">,</span> <span class="StringLit">&quot;John&quot;</span><span class="Punctuation">,</span> <span class="StringLit">&quot;surname&quot;</span><span class="Punctuation">,</span> <span class="StringLit">&quot;Doe&quot;</span><span class="Punctuation">,</span> <span class="Identifier">modeCaseSensitive</span><span class="Punctuation">)</span>
<span class="Keyword">let</span> <span class="Identifier">jsonStr</span> <span class="Operator">=</span> <span class="LongStringLit">&quot;&quot;&quot;{&quot;mode&quot;: &quot;modeCaseSensitive&quot;,
                      &quot;table&quot;: {&quot;name&quot;: &quot;John&quot;, &quot;surname&quot;: &quot;Doe&quot;}}&quot;&quot;&quot;</span>
<span class="Identifier">assert</span> <span class="Identifier">toJson</span><span class="Punctuation">(</span><span class="Identifier">t</span><span class="Punctuation">)</span> <span class="Operator">==</span> <span class="Identifier">parseJson</span><span class="Punctuation">(</span><span class="Identifier">jsonStr</span><span class="Punctuation">)</span></pre>
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/jsonutils.nim#L480" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/jsonutils.nim#L480" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>
<div id="toJsonHook,SomeSet[A]">
  <dt><pre><span class="Keyword">proc</span> <a href="#toJsonHook%2CSomeSet%5BA%5D"><span class="Identifier">toJsonHook</span></a><span class="Other">[</span><span class="Identifier">A</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">s</span><span class="Other">:</span> <a href="sets.html#SomeSet"><span class="Identifier">SomeSet</span></a><span class="Other">[</span><span class="Identifier">A</span><span class="Other">]</span><span class="Other">;</span> <span class="Identifier">opt</span> <span class="Other">=</span> <span class="Identifier">initToJsonOptions</span><span class="Other">(</span><span class="Other">)</span><span class="Other">)</span><span class="Other">:</span> <a href="json.html#JsonNode"><span class="Identifier">JsonNode</span></a></pre></dt>
  <dd>
    
    <p>Enables <tt class="docutils literal"><span class="pre"><span class="Identifier">toJson</span></span></tt> for <tt class="docutils literal"><span class="pre"><span class="Identifier">HashSet</span></span></tt> and <tt class="docutils literal"><span class="pre"><span class="Identifier">OrderedSet</span></span></tt> types.</p>
<p>See also:</p>
<ul class="simple"><li><a class="reference external" href="#fromJsonHook,SomeSet[A],JsonNode">fromJsonHook proc</a></li>
</ul>

<p><strong class="examples_text">Example:</strong></p>
<pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Punctuation">[</span><span class="Identifier">sets</span><span class="Punctuation">,</span> <span class="Identifier">json</span><span class="Punctuation">]</span>
<span class="Keyword">let</span> <span class="Identifier">foo</span> <span class="Operator">=</span> <span class="Punctuation">(</span><span class="Identifier">hs</span><span class="Punctuation">:</span> <span class="Punctuation">[</span><span class="StringLit">&quot;hash&quot;</span><span class="Punctuation">]</span><span class="Operator">.</span><span class="Identifier">toHashSet</span><span class="Punctuation">,</span> <span class="Identifier">os</span><span class="Punctuation">:</span> <span class="Punctuation">[</span><span class="StringLit">&quot;ordered&quot;</span><span class="Punctuation">,</span> <span class="StringLit">&quot;set&quot;</span><span class="Punctuation">]</span><span class="Operator">.</span><span class="Identifier">toOrderedSet</span><span class="Punctuation">)</span>
<span class="Identifier">assert</span> <span class="Operator">$</span><span class="Identifier">toJson</span><span class="Punctuation">(</span><span class="Identifier">foo</span><span class="Punctuation">)</span> <span class="Operator">==</span> <span class="LongStringLit">&quot;&quot;&quot;{&quot;hs&quot;:[&quot;hash&quot;],&quot;os&quot;:[&quot;ordered&quot;,&quot;set&quot;]}&quot;&quot;&quot;</span></pre>
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/jsonutils.nim#L413" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/jsonutils.nim#L413" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>
<div id="toJsonHook">
  <dt><pre><span class="Keyword">proc</span> <a href="#toJsonHook"><span class="Identifier">toJsonHook</span></a><span class="Other">[</span><span class="Identifier">K</span><span class="Other">:</span> <a href="system.html#string"><span class="Identifier">string</span></a> <span class="Operator">|</span> <a href="system.html#cstring"><span class="Identifier">cstring</span></a><span class="Other">;</span> <span class="Identifier">V</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">t</span><span class="Other">:</span> <span class="Other">(</span><a href="tables.html#Table"><span class="Identifier">Table</span></a><span class="Other">[</span><span class="Identifier">K</span><span class="Other">,</span> <span class="Identifier">V</span><span class="Other">]</span> <span class="Operator">|</span> <a href="tables.html#OrderedTable"><span class="Identifier">OrderedTable</span></a><span class="Other">[</span><span class="Identifier">K</span><span class="Other">,</span> <span class="Identifier">V</span><span class="Other">]</span><span class="Other">)</span><span class="Other">;</span>
                                        <span class="Identifier">opt</span> <span class="Other">=</span> <span class="Identifier">initToJsonOptions</span><span class="Other">(</span><span class="Other">)</span><span class="Other">)</span><span class="Other">:</span> <a href="json.html#JsonNode"><span class="Identifier">JsonNode</span></a></pre></dt>
  <dd>
    
    <p>Enables <tt class="docutils literal"><span class="pre"><span class="Identifier">toJson</span></span></tt> for <tt class="docutils literal"><span class="pre"><span class="Identifier">Table</span></span></tt> and <tt class="docutils literal"><span class="pre"><span class="Identifier">OrderedTable</span></span></tt> types.</p>
<p>See also:</p>
<ul class="simple"><li><a class="reference external" href="#fromJsonHook,,JsonNode">fromJsonHook proc</a></li>
</ul>

<p><strong class="examples_text">Example:</strong></p>
<pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Punctuation">[</span><span class="Identifier">tables</span><span class="Punctuation">,</span> <span class="Identifier">json</span><span class="Punctuation">,</span> <span class="Identifier">sugar</span><span class="Punctuation">]</span>
<span class="Keyword">let</span> <span class="Identifier">foo</span> <span class="Operator">=</span> <span class="Punctuation">(</span>
  <span class="Identifier">t</span><span class="Punctuation">:</span> <span class="Punctuation">[</span><span class="Punctuation">(</span><span class="StringLit">&quot;two&quot;</span><span class="Punctuation">,</span> <span class="DecNumber">2</span><span class="Punctuation">)</span><span class="Punctuation">]</span><span class="Operator">.</span><span class="Identifier">toTable</span><span class="Punctuation">,</span>
  <span class="Identifier">ot</span><span class="Punctuation">:</span> <span class="Punctuation">[</span><span class="Punctuation">(</span><span class="StringLit">&quot;one&quot;</span><span class="Punctuation">,</span> <span class="DecNumber">1</span><span class="Punctuation">)</span><span class="Punctuation">,</span> <span class="Punctuation">(</span><span class="StringLit">&quot;three&quot;</span><span class="Punctuation">,</span> <span class="DecNumber">3</span><span class="Punctuation">)</span><span class="Punctuation">]</span><span class="Operator">.</span><span class="Identifier">toOrderedTable</span><span class="Punctuation">)</span>
<span class="Identifier">assert</span> <span class="Operator">$</span><span class="Identifier">toJson</span><span class="Punctuation">(</span><span class="Identifier">foo</span><span class="Punctuation">)</span> <span class="Operator">==</span> <span class="LongStringLit">&quot;&quot;&quot;{&quot;t&quot;:{&quot;two&quot;:2},&quot;ot&quot;:{&quot;one&quot;:1,&quot;three&quot;:3}}&quot;&quot;&quot;</span>
<span class="Comment"># if keys are not string|cstring, you can use this:</span>
<span class="Keyword">let</span> <span class="Identifier">a</span> <span class="Operator">=</span> <span class="Punctuation">{</span><span class="DecNumber">10</span><span class="Punctuation">:</span> <span class="StringLit">&quot;foo&quot;</span><span class="Punctuation">,</span> <span class="DecNumber">11</span><span class="Punctuation">:</span> <span class="StringLit">&quot;bar&quot;</span><span class="Punctuation">}</span><span class="Operator">.</span><span class="Identifier">newOrderedTable</span>
<span class="Keyword">let</span> <span class="Identifier">a2</span> <span class="Operator">=</span> <span class="Identifier">collect</span><span class="Punctuation">:</span> <span class="Punctuation">(</span><span class="Keyword">for</span> <span class="Identifier">k</span><span class="Punctuation">,</span><span class="Identifier">v</span> <span class="Keyword">in</span> <span class="Identifier">a</span><span class="Punctuation">:</span> <span class="Punctuation">(</span><span class="Identifier">k</span><span class="Punctuation">,</span><span class="Identifier">v</span><span class="Punctuation">)</span><span class="Punctuation">)</span>
<span class="Identifier">assert</span> <span class="Operator">$</span><span class="Identifier">toJson</span><span class="Punctuation">(</span><span class="Identifier">a2</span><span class="Punctuation">)</span> <span class="Operator">==</span> <span class="LongStringLit">&quot;&quot;&quot;[[10,&quot;foo&quot;],[11,&quot;bar&quot;]]&quot;&quot;&quot;</span></pre>
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/jsonutils.nim#L372" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/jsonutils.nim#L372" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>
<div id="toJsonHook,Option[T]">
  <dt><pre><span class="Keyword">proc</span> <a href="#toJsonHook%2COption%5BT%5D"><span class="Identifier">toJsonHook</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">self</span><span class="Other">:</span> <a href="options.html#Option"><span class="Identifier">Option</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">;</span> <span class="Identifier">opt</span> <span class="Other">=</span> <span class="Identifier">initToJsonOptions</span><span class="Other">(</span><span class="Other">)</span><span class="Other">)</span><span class="Other">:</span> <a href="json.html#JsonNode"><span class="Identifier">JsonNode</span></a></pre></dt>
  <dd>
    
    <p>Enables <tt class="docutils literal"><span class="pre"><span class="Identifier">toJson</span></span></tt> for <tt class="docutils literal"><span class="pre"><span class="Identifier">Option</span></span></tt> types.</p>
<p>See also:</p>
<ul class="simple"><li><a class="reference external" href="#fromJsonHook,Option[T],JsonNode">fromJsonHook proc</a></li>
</ul>

<p><strong class="examples_text">Example:</strong></p>
<pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Punctuation">[</span><span class="Identifier">options</span><span class="Punctuation">,</span> <span class="Identifier">json</span><span class="Punctuation">]</span>
<span class="Keyword">let</span> <span class="Identifier">optSome</span> <span class="Operator">=</span> <span class="Identifier">some</span><span class="Punctuation">(</span><span class="StringLit">&quot;test&quot;</span><span class="Punctuation">)</span>
<span class="Identifier">assert</span> <span class="Operator">$</span><span class="Identifier">toJson</span><span class="Punctuation">(</span><span class="Identifier">optSome</span><span class="Punctuation">)</span> <span class="Operator">==</span> <span class="StringLit">&quot;</span><span class="EscapeSequence">\&quot;</span><span class="StringLit">test</span><span class="EscapeSequence">\&quot;</span><span class="StringLit">&quot;</span>
<span class="Keyword">let</span> <span class="Identifier">optNone</span> <span class="Operator">=</span> <span class="Identifier">none</span><span class="Punctuation">[</span><span class="Identifier">string</span><span class="Punctuation">]</span><span class="Punctuation">(</span><span class="Punctuation">)</span>
<span class="Identifier">assert</span> <span class="Operator">$</span><span class="Identifier">toJson</span><span class="Punctuation">(</span><span class="Identifier">optNone</span><span class="Punctuation">)</span> <span class="Operator">==</span> <span class="StringLit">&quot;null&quot;</span></pre>
    <a href="https://github.com/nim-lang/Nim/tree/devel/lib/std/jsonutils.nim#L445" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
<a href="https://github.com/nim-lang/Nim/edit/devel/lib/std/jsonutils.nim#L445" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;

  </dd>
</div>

</div>

  </dl>
</div>

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