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  27.       <h1 class="title">std/macrocache</h1>
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  40.         <li><a href="manual.html">Manual</a></li>
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  41.         <li><a href="lib.html">Standard library</a></li>
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  42.         <li> <a id="indexLink" href="theindex.html">Index</a></li>
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  52.     
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  53.     <ul class="simple simple-toc" id="toc-list">
    54. 

  54.   <li>
    55. 

  55.   <a class="reference reference-toplevel" href="#6" id="56">Imports</a>
    56. 

  56. </li>
    57. 

  57. <li>
    58. 

  58.   <details open>
    59. 

  59.     <summary><a class="reference reference-toplevel" href="#7" id="57">Types</a></summary>
    60. 

  60.     <ul class="simple simple-toc-section">
    61. 

  61.       <li><a class="reference" href="#CacheCounter" title="CacheCounter = distinct string">CacheCounter</a></li>
    62. 

  62. <li><a class="reference" href="#CacheSeq" title="CacheSeq = distinct string">CacheSeq</a></li>
    63. 

  63. <li><a class="reference" href="#CacheTable" title="CacheTable = distinct string">CacheTable</a></li>
    64. 

  64. 

  65.     </ul>
    66. 

  66.   </details>
    67. 

  67. </li>
    68. 

  68. <li>
    69. 

  69.   <details open>
    70. 

  70.     <summary><a class="reference reference-toplevel" href="#12" id="62">Procs</a></summary>
    71. 

  71.     <ul class="simple simple-toc-section">
    72. 

  72.       <ul class="simple nested-toc-section">[]
    73. 

  73.   <li><a class="reference" href="#%5B%5D%2CCacheSeq%2CBackwardsIndex" title="`[]`(s: CacheSeq; i: BackwardsIndex): NimNode">`[]`(s: CacheSeq; i: BackwardsIndex): NimNode</a></li>
    74. 

  74. <li><a class="reference" href="#%5B%5D%2CCacheSeq%2Cint" title="`[]`(s: CacheSeq; i: int): NimNode">`[]`(s: CacheSeq; i: int): NimNode</a></li>
    75. 

  75. <li><a class="reference" href="#%5B%5D%2CCacheTable%2Cstring" title="`[]`(t: CacheTable; key: string): NimNode">`[]`(t: CacheTable; key: string): NimNode</a></li>
    76. 

  76. 

  77. </ul>
    78. 

  78. <ul class="simple nested-toc-section">[]=
    79. 

  79.   <li><a class="reference" href="#%5B%5D%3D%2CCacheTable%2Cstring%2CNimNode" title="`[]=`(t: CacheTable; key: string; value: NimNode)">`[]=`(t: CacheTable; key: string; value: NimNode)</a></li>
    80. 

  80. 

  81. </ul>
    82. 

  82. <ul class="simple nested-toc-section">add
    83. 

  83.   <li><a class="reference" href="#add%2CCacheSeq%2CNimNode" title="add(s: CacheSeq; value: NimNode)">add(s: CacheSeq; value: NimNode)</a></li>
    84. 

  84. 

  85. </ul>
    86. 

  86. <ul class="simple nested-toc-section">contains
    87. 

  87.   <li><a class="reference" href="#contains%2CCacheTable%2Cstring" title="contains(t: CacheTable; key: string): bool">contains(t: CacheTable; key: string): bool</a></li>
    88. 

  88. 

  89. </ul>
    90. 

  90. <ul class="simple nested-toc-section">hasKey
    91. 

  91.   <li><a class="reference" href="#hasKey%2CCacheTable%2Cstring" title="hasKey(t: CacheTable; key: string): bool">hasKey(t: CacheTable; key: string): bool</a></li>
    92. 

  92. 

  93. </ul>
    94. 

  94. <ul class="simple nested-toc-section">inc
    95. 

  95.   <li><a class="reference" href="#inc%2CCacheCounter%2Cint" title="inc(c: CacheCounter; by = 1)">inc(c: CacheCounter; by = 1)</a></li>
    96. 

  96. 

  97. </ul>
    98. 

  98. <ul class="simple nested-toc-section">incl
    99. 

  99.   <li><a class="reference" href="#incl%2CCacheSeq%2CNimNode" title="incl(s: CacheSeq; value: NimNode)">incl(s: CacheSeq; value: NimNode)</a></li>
    100. 

  100. 

  101. </ul>
    102. 

  102. <ul class="simple nested-toc-section">len
    103. 

  103.   <li><a class="reference" href="#len%2CCacheSeq" title="len(s: CacheSeq): int">len(s: CacheSeq): int</a></li>
    104. 

  104. <li><a class="reference" href="#len%2CCacheTable" title="len(t: CacheTable): int">len(t: CacheTable): int</a></li>
    105. 

  105. 

  106. </ul>
    107. 

  107. <ul class="simple nested-toc-section">value
    108. 

  108.   <li><a class="reference" href="#value%2CCacheCounter" title="value(c: CacheCounter): int">value(c: CacheCounter): int</a></li>
    109. 

  109. 

  110. </ul>
    111. 

  111. 

  112.     </ul>
    113. 

  113.   </details>
    114. 

  114. </li>
    115. 

  115. <li>
    116. 

  116.   <details open>
    117. 

  117.     <summary><a class="reference reference-toplevel" href="#15" id="65">Iterators</a></summary>
    118. 

  118.     <ul class="simple simple-toc-section">
    119. 

  119.       <ul class="simple nested-toc-section">items
    120. 

  120.   <li><a class="reference" href="#items.i%2CCacheSeq" title="items(s: CacheSeq): NimNode">items(s: CacheSeq): NimNode</a></li>
    121. 

  121. 

  122. </ul>
    123. 

  123. <ul class="simple nested-toc-section">pairs
    124. 

  124.   <li><a class="reference" href="#pairs.i%2CCacheTable" title="pairs(t: CacheTable): (string, NimNode)">pairs(t: CacheTable): (string, NimNode)</a></li>
    125. 

  125. 

  126. </ul>
    127. 

  127. 

  128.     </ul>
    129. 

  129.   </details>
    130. 

  130. </li>
    131. 

  131. 

  132. </ul>
    133. 

  133. 

  134.   </div>
    135. 

  135.   <div class="nine columns" id="content">
    136. 

  136.     <a href="https://github.com/nim-lang/Nim/tree/devel/lib/core/macrocache.nim#L1" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
    137. 

  137. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/core/macrocache.nim#L1" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
    138. 

  138. 

  139.     <div id="tocRoot"></div>
    140. 

  140.     
    141. 

  141.     <p class="module-desc"><p>This module provides an API for macros to collect compile-time information across module boundaries. It should be used instead of global <tt class="docutils literal"><span class="pre"><span class="Punctuation">{</span><span class="Operator">.</span><span class="Identifier">compileTime</span><span class="Operator">.</span><span class="Punctuation">}</span></span></tt> variables as those break incremental compilation.</p>
    142. 

  142. <p>The main feature of this module is that if you create <tt class="docutils literal"><span class="pre"><span class="Identifier">CacheTable</span></span></tt>s or any other <tt class="docutils literal"><span class="pre"><span class="Identifier">Cache</span></span></tt> types with the same name in different modules, their content will be shared, meaning that you can fill a <tt class="docutils literal"><span class="pre"><span class="Identifier">CacheTable</span></span></tt> in one module, and iterate over its contents in another.</p>
    143. 

  143. 

  144. <p><strong class="examples_text">Example:</strong></p>
    145. 

  145. <pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Identifier">macrocache</span>
    146. 

  146. <span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Identifier">macros</span>
    147. 

  147. 

  148. <span class="Keyword">const</span> <span class="Identifier">mcTable</span> <span class="Operator">=</span> <span class="RawData">CacheTable&quot;myTable&quot;</span>
    149. 

  149. <span class="Keyword">const</span> <span class="Identifier">mcSeq</span> <span class="Operator">=</span> <span class="RawData">CacheSeq&quot;mySeq&quot;</span>
    150. 

  150. <span class="Keyword">const</span> <span class="Identifier">mcCounter</span> <span class="Operator">=</span> <span class="RawData">CacheCounter&quot;myCounter&quot;</span>
    151. 

  151. 

  152. <span class="Keyword">static</span><span class="Punctuation">:</span>
    153. 

  153.   <span class="Comment"># add new key &quot;val&quot; with the value `myval`</span>
    154. 

  154.   <span class="Keyword">let</span> <span class="Identifier">myval</span> <span class="Operator">=</span> <span class="Identifier">newLit</span><span class="Punctuation">(</span><span class="StringLit">&quot;hello ic&quot;</span><span class="Punctuation">)</span>
    155. 

  155.   <span class="Identifier">mcTable</span><span class="Punctuation">[</span><span class="StringLit">&quot;val&quot;</span><span class="Punctuation">]</span> <span class="Operator">=</span> <span class="Identifier">myval</span>
    156. 

  156.   <span class="Identifier">assert</span> <span class="Identifier">mcTable</span><span class="Punctuation">[</span><span class="StringLit">&quot;val&quot;</span><span class="Punctuation">]</span><span class="Operator">.</span><span class="Identifier">kind</span> <span class="Operator">==</span> <span class="Identifier">nnkStrLit</span>
    157. 

  157. 

  158. <span class="Comment"># Can access the same cache from different static contexts</span>
    159. 

  159. <span class="Comment"># All the information is retained</span>
    160. 

  160. <span class="Keyword">static</span><span class="Punctuation">:</span>
    161. 

  161.   <span class="Comment"># get value from `mcTable` and add it to `mcSeq`</span>
    162. 

  162.   <span class="Identifier">mcSeq</span><span class="Operator">.</span><span class="Identifier">add</span><span class="Punctuation">(</span><span class="Identifier">mcTable</span><span class="Punctuation">[</span><span class="StringLit">&quot;val&quot;</span><span class="Punctuation">]</span><span class="Punctuation">)</span>
    163. 

  163.   <span class="Identifier">assert</span> <span class="Identifier">mcSeq</span><span class="Operator">.</span><span class="Identifier">len</span> <span class="Operator">==</span> <span class="DecNumber">1</span>
    164. 

  164. 

  165. <span class="Keyword">static</span><span class="Punctuation">:</span>
    166. 

  166.   <span class="Identifier">assert</span> <span class="Identifier">mcSeq</span><span class="Punctuation">[</span><span class="DecNumber">0</span><span class="Punctuation">]</span><span class="Operator">.</span><span class="Identifier">strVal</span> <span class="Operator">==</span> <span class="StringLit">&quot;hello ic&quot;</span>
    167. 

  167. 

  168.   <span class="Comment"># increase `mcCounter` by 3</span>
    169. 

  169.   <span class="Identifier">mcCounter</span><span class="Operator">.</span><span class="Identifier">inc</span><span class="Punctuation">(</span><span class="DecNumber">3</span><span class="Punctuation">)</span>
    170. 

  170.   <span class="Identifier">assert</span> <span class="Identifier">mcCounter</span><span class="Operator">.</span><span class="Identifier">value</span> <span class="Operator">==</span> <span class="DecNumber">3</span></pre></p>
    171. 

  171.     <div class="section" id="6">
    172. 

  172.   <h1><a class="toc-backref" href="#6">Imports</a></h1>
    173. 

  173.   <dl class="item">
    174. 

  174.     <a class="reference external" href="assertions.html">assertions</a>
    175. 

  175.   </dl>
    176. 

  176. </div>
    177. 

  177. <div class="section" id="7">
    178. 

  178.   <h1><a class="toc-backref" href="#7">Types</a></h1>
    179. 

  179.   <dl class="item">
    180. 

  180.     <div id="CacheCounter">
    181. 

  181.   <dt><pre><a href="macrocache.html#CacheCounter"><span class="Identifier">CacheCounter</span></a> <span class="Other">=</span> <span class="Keyword">distinct</span> <a href="system.html#string"><span class="Identifier">string</span></a></pre></dt>
    182. 

  182.   <dd>
    183. 

  183.     
    184. 

  184.     Compile-time counter, uses <tt class="docutils literal"><span class="pre"><span class="Identifier">int</span></span></tt> for storing the count.
    185. 

  185.     <a href="https://github.com/nim-lang/Nim/tree/devel/lib/core/macrocache.nim#L57" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
    186. 

  186. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/core/macrocache.nim#L57" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
    187. 

  187. 

  188.   </dd>
    189. 

  189. </div>
    190. 

  190. <div id="CacheSeq">
    191. 

  191.   <dt><pre><a href="macrocache.html#CacheSeq"><span class="Identifier">CacheSeq</span></a> <span class="Other">=</span> <span class="Keyword">distinct</span> <a href="system.html#string"><span class="Identifier">string</span></a></pre></dt>
    192. 

  192.   <dd>
    193. 

  193.     
    194. 

  194.     Compile-time sequence of <tt class="docutils literal"><span class="pre"><span class="Identifier">NimNode</span></span></tt>s.
    195. 

  195.     <a href="https://github.com/nim-lang/Nim/tree/devel/lib/core/macrocache.nim#L51" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
    196. 

  196. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/core/macrocache.nim#L51" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
    197. 

  197. 

  198.   </dd>
    199. 

  199. </div>
    200. 

  200. <div id="CacheTable">
    201. 

  201.   <dt><pre><a href="macrocache.html#CacheTable"><span class="Identifier">CacheTable</span></a> <span class="Other">=</span> <span class="Keyword">distinct</span> <a href="system.html#string"><span class="Identifier">string</span></a></pre></dt>
    202. 

  202.   <dd>
    203. 

  203.     
    204. 

  204.     <p>Compile-time table of key-value pairs.</p>
    205. 

  205. <p>Keys are <tt class="docutils literal"><span class="pre"><span class="Identifier">string</span></span></tt>s and values are <tt class="docutils literal"><span class="pre"><span class="Identifier">NimNode</span></span></tt>s.</p>
    206. 

  206. 

  207.     <a href="https://github.com/nim-lang/Nim/tree/devel/lib/core/macrocache.nim#L53" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
    208. 

  208. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/core/macrocache.nim#L53" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
    209. 

  209. 

  210.   </dd>
    211. 

  211. </div>
    212. 

  212. 

  213.   </dl>
    214. 

  214. </div>
    215. 

  215. <div class="section" id="12">
    216. 

  216.   <h1><a class="toc-backref" href="#12">Procs</a></h1>
    217. 

  217.   <dl class="item">
    218. 

  218.     <div id="[]-procs-all">
    219. 

  219.   <div id="[],CacheSeq,BackwardsIndex">
    220. 

  220.   <dt><pre><span class="Keyword">proc</span> <a href="#%5B%5D%2CCacheSeq%2CBackwardsIndex"><span class="Identifier">`[]`</span></a><span class="Other">(</span><span class="Identifier">s</span><span class="Other">:</span> <a href="macrocache.html#CacheSeq"><span class="Identifier">CacheSeq</span></a><span class="Other">;</span> <span class="Identifier">i</span><span class="Other">:</span> <a href="system.html#BackwardsIndex"><span class="Identifier">BackwardsIndex</span></a><span class="Other">)</span><span class="Other">:</span> <a href="system.html#NimNode"><span class="Identifier">NimNode</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>
    221. 

  221.     <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
    222. 

  222.   <dd>
    223. 

  223.     
    224. 

  224.     Returns the <tt class="docutils literal"><span class="pre"><span class="Identifier">i</span></span></tt>th last value from <tt class="docutils literal"><span class="pre"><span class="Identifier">s</span></span></tt>.
    225. 

  225. <p><strong class="examples_text">Example:</strong></p>
    226. 

  226. <pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Identifier">macros</span>
    227. 

  227. 

  228. <span class="Keyword">const</span> <span class="Identifier">mySeq</span> <span class="Operator">=</span> <span class="RawData">CacheSeq&quot;backTest&quot;</span>
    229. 

  229. <span class="Keyword">static</span><span class="Punctuation">:</span>
    230. 

  230.   <span class="Identifier">mySeq</span> <span class="Operator">&amp;=</span> <span class="Identifier">newLit</span><span class="Punctuation">(</span><span class="DecNumber">42</span><span class="Punctuation">)</span>
    231. 

  231.   <span class="Identifier">mySeq</span> <span class="Operator">&amp;=</span> <span class="Identifier">newLit</span><span class="Punctuation">(</span><span class="DecNumber">7</span><span class="Punctuation">)</span>
    232. 

  232.   <span class="Identifier">assert</span> <span class="Identifier">mySeq</span><span class="Punctuation">[</span><span class="Operator">^</span><span class="DecNumber">1</span><span class="Punctuation">]</span><span class="Operator">.</span><span class="Identifier">intVal</span> <span class="Operator">==</span> <span class="DecNumber">7</span>  <span class="Comment"># Last item</span>
    233. 

  233.   <span class="Identifier">assert</span> <span class="Identifier">mySeq</span><span class="Punctuation">[</span><span class="Operator">^</span><span class="DecNumber">2</span><span class="Punctuation">]</span><span class="Operator">.</span><span class="Identifier">intVal</span> <span class="Operator">==</span> <span class="DecNumber">42</span> <span class="Comment"># Second last item</span></pre>
    234. 

  234.     <a href="https://github.com/nim-lang/Nim/tree/devel/lib/core/macrocache.nim#L133" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
    235. 

  235. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/core/macrocache.nim#L133" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
    236. 

  236. 

  237.   </dd>
    238. 

  238. </div>
    239. 

  239. <div id="[],CacheSeq,int">
    240. 

  240.   <dt><pre><span class="Keyword">proc</span> <a href="#%5B%5D%2CCacheSeq%2Cint"><span class="Identifier">`[]`</span></a><span class="Other">(</span><span class="Identifier">s</span><span class="Other">:</span> <a href="macrocache.html#CacheSeq"><span class="Identifier">CacheSeq</span></a><span class="Other">;</span> <span class="Identifier">i</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a><span class="Other">)</span><span class="Other">:</span> <a href="system.html#NimNode"><span class="Identifier">NimNode</span></a> {.<span class="Identifier">magic</span><span class="Other">:</span> <span class="StringLit">&quot;NcsAt&quot;</span><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="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>
    241. 

  241.     <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
    242. 

  242.   <dd>
    243. 

  243.     
    244. 

  244.     Returns the <tt class="docutils literal"><span class="pre"><span class="Identifier">i</span></span></tt>th value from <tt class="docutils literal"><span class="pre"><span class="Identifier">s</span></span></tt>.
    245. 

  245. <p><strong class="examples_text">Example:</strong></p>
    246. 

  246. <pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Identifier">macros</span>
    247. 

  247. 

  248. <span class="Keyword">const</span> <span class="Identifier">mySeq</span> <span class="Operator">=</span> <span class="RawData">CacheSeq&quot;subTest&quot;</span>
    249. 

  249. <span class="Keyword">static</span><span class="Punctuation">:</span>
    250. 

  250.   <span class="Identifier">mySeq</span><span class="Operator">.</span><span class="Identifier">add</span><span class="Punctuation">(</span><span class="Identifier">newLit</span><span class="Punctuation">(</span><span class="DecNumber">42</span><span class="Punctuation">)</span><span class="Punctuation">)</span>
    251. 

  251.   <span class="Identifier">assert</span> <span class="Identifier">mySeq</span><span class="Punctuation">[</span><span class="DecNumber">0</span><span class="Punctuation">]</span><span class="Operator">.</span><span class="Identifier">intVal</span> <span class="Operator">==</span> <span class="DecNumber">42</span></pre>
    252. 

  252.     <a href="https://github.com/nim-lang/Nim/tree/devel/lib/core/macrocache.nim#L123" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
    253. 

  253. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/core/macrocache.nim#L123" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
    254. 

  254. 

  255.   </dd>
    256. 

  256. </div>
    257. 

  257. <div id="[],CacheTable,string">
    258. 

  258.   <dt><pre><span class="Keyword">proc</span> <a href="#%5B%5D%2CCacheTable%2Cstring"><span class="Identifier">`[]`</span></a><span class="Other">(</span><span class="Identifier">t</span><span class="Other">:</span> <a href="macrocache.html#CacheTable"><span class="Identifier">CacheTable</span></a><span class="Other">;</span> <span class="Identifier">key</span><span class="Other">:</span> <a href="system.html#string"><span class="Identifier">string</span></a><span class="Other">)</span><span class="Other">:</span> <a href="system.html#NimNode"><span class="Identifier">NimNode</span></a> {.<span class="Identifier">magic</span><span class="Other">:</span> <span class="StringLit">&quot;NctGet&quot;</span><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="Other">]</span><span class="Other">,</span>
    259. 

  259.     <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>
    260. 

  260.   <dd>
    261. 

  261.     
    262. 

  262.     Retrieves the <tt class="docutils literal"><span class="pre"><span class="Identifier">NimNode</span></span></tt> value at <tt class="docutils literal"><span class="pre"><span class="Identifier">t</span><span class="Punctuation">[</span><span class="Identifier">key</span><span class="Punctuation">]</span></span></tt>.
    263. 

  263. <p><strong class="examples_text">Example:</strong></p>
    264. 

  264. <pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Identifier">macros</span>
    265. 

  265. 

  266. <span class="Keyword">const</span> <span class="Identifier">mcTable</span> <span class="Operator">=</span> <span class="RawData">CacheTable&quot;subTest&quot;</span>
    267. 

  267. <span class="Keyword">static</span><span class="Punctuation">:</span>
    268. 

  268.   <span class="Identifier">mcTable</span><span class="Punctuation">[</span><span class="StringLit">&quot;toAdd&quot;</span><span class="Punctuation">]</span> <span class="Operator">=</span> <span class="Identifier">newStmtList</span><span class="Punctuation">(</span><span class="Punctuation">)</span>
    269. 

  269. 

  270.   <span class="Comment"># get the NimNode back</span>
    271. 

  271.   <span class="Identifier">assert</span> <span class="Identifier">mcTable</span><span class="Punctuation">[</span><span class="StringLit">&quot;toAdd&quot;</span><span class="Punctuation">]</span><span class="Operator">.</span><span class="Identifier">kind</span> <span class="Operator">==</span> <span class="Identifier">nnkStmtList</span></pre>
    272. 

  272.     <a href="https://github.com/nim-lang/Nim/tree/devel/lib/core/macrocache.nim#L188" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
    273. 

  273. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/core/macrocache.nim#L188" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
    274. 

  274. 

  275.   </dd>
    276. 

  276. </div>
    277. 

  277. 

  278. </div>
    279. 

  279. <div id="[]=-procs-all">
    280. 

  280.   <div id="[]=,CacheTable,string,NimNode">
    281. 

  281.   <dt><pre><span class="Keyword">proc</span> <a href="#%5B%5D%3D%2CCacheTable%2Cstring%2CNimNode"><span class="Identifier">`[]=`</span></a><span class="Other">(</span><span class="Identifier">t</span><span class="Other">:</span> <a href="macrocache.html#CacheTable"><span class="Identifier">CacheTable</span></a><span class="Other">;</span> <span class="Identifier">key</span><span class="Other">:</span> <a href="system.html#string"><span class="Identifier">string</span></a><span class="Other">;</span> <span class="Identifier">value</span><span class="Other">:</span> <a href="system.html#NimNode"><span class="Identifier">NimNode</span></a><span class="Other">)</span> {.<span class="Identifier">magic</span><span class="Other">:</span> <span class="StringLit">&quot;NctPut&quot;</span><span class="Other">,</span>
    282. 

  282.     <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>
    283. 

  283.   <dd>
    284. 

  284.     
    285. 

  285.     Inserts a <tt class="docutils literal"><span class="pre"><span class="Punctuation">(</span><span class="Identifier">key</span><span class="Punctuation">,</span> <span class="Identifier">value</span><span class="Punctuation">)</span></span></tt> pair into <tt class="docutils literal"><span class="pre"><span class="Identifier">t</span></span></tt>.<div class="admonition admonition-warning"><span class="admonition-warning-text"><b>Warning:</b></span>
    286. 

  286. <tt class="docutils literal"><span class="pre"><span class="Identifier">key</span></span></tt> has to be unique! Assigning <tt class="docutils literal"><span class="pre"><span class="Identifier">value</span></span></tt> to a <tt class="docutils literal"><span class="pre"><span class="Identifier">key</span></span></tt> that is already in the table will result in a compiler error.</div>
    287. 

  287. 

  288. <p><strong class="examples_text">Example:</strong></p>
    289. 

  289. <pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Identifier">macros</span>
    290. 

  290. 

  291. <span class="Keyword">const</span> <span class="Identifier">mcTable</span> <span class="Operator">=</span> <span class="RawData">CacheTable&quot;subTest&quot;</span>
    292. 

  292. <span class="Keyword">static</span><span class="Punctuation">:</span>
    293. 

  293.   <span class="Comment"># assign newLit(5) to the key &quot;value&quot;</span>
    294. 

  294.   <span class="Identifier">mcTable</span><span class="Punctuation">[</span><span class="StringLit">&quot;value&quot;</span><span class="Punctuation">]</span> <span class="Operator">=</span> <span class="Identifier">newLit</span><span class="Punctuation">(</span><span class="DecNumber">5</span><span class="Punctuation">)</span>
    295. 

  295. 

  296.   <span class="Comment"># check that we can get the value back</span>
    297. 

  297.   <span class="Identifier">assert</span> <span class="Identifier">mcTable</span><span class="Punctuation">[</span><span class="StringLit">&quot;value&quot;</span><span class="Punctuation">]</span><span class="Operator">.</span><span class="Identifier">kind</span> <span class="Operator">==</span> <span class="Identifier">nnkIntLit</span></pre>
    298. 

  298.     <a href="https://github.com/nim-lang/Nim/tree/devel/lib/core/macrocache.nim#L162" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
    299. 

  299. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/core/macrocache.nim#L162" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
    300. 

  300. 

  301.   </dd>
    302. 

  302. </div>
    303. 

  303. 

  304. </div>
    305. 

  305. <div id="add-procs-all">
    306. 

  306.   <div id="add,CacheSeq,NimNode">
    307. 

  307.   <dt><pre><span class="Keyword">proc</span> <a href="#add%2CCacheSeq%2CNimNode"><span class="Identifier">add</span></a><span class="Other">(</span><span class="Identifier">s</span><span class="Other">:</span> <a href="macrocache.html#CacheSeq"><span class="Identifier">CacheSeq</span></a><span class="Other">;</span> <span class="Identifier">value</span><span class="Other">:</span> <a href="system.html#NimNode"><span class="Identifier">NimNode</span></a><span class="Other">)</span> {.<span class="Identifier">magic</span><span class="Other">:</span> <span class="StringLit">&quot;NcsAdd&quot;</span><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="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>
    308. 

  308.                                         <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
    309. 

  309.   <dd>
    310. 

  310.     
    311. 

  311.     Adds <tt class="docutils literal"><span class="pre"><span class="Identifier">value</span></span></tt> to <tt class="docutils literal"><span class="pre"><span class="Identifier">s</span></span></tt>.
    312. 

  312. <p><strong class="examples_text">Example:</strong></p>
    313. 

  313. <pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Identifier">macros</span>
    314. 

  314. <span class="Keyword">const</span> <span class="Identifier">mySeq</span> <span class="Operator">=</span> <span class="RawData">CacheSeq&quot;addTest&quot;</span>
    315. 

  315. 

  316. <span class="Keyword">static</span><span class="Punctuation">:</span>
    317. 

  317.   <span class="Identifier">mySeq</span><span class="Operator">.</span><span class="Identifier">add</span><span class="Punctuation">(</span><span class="Identifier">newLit</span><span class="Punctuation">(</span><span class="DecNumber">5</span><span class="Punctuation">)</span><span class="Punctuation">)</span>
    318. 

  318.   <span class="Identifier">mySeq</span><span class="Operator">.</span><span class="Identifier">add</span><span class="Punctuation">(</span><span class="Identifier">newLit</span><span class="Punctuation">(</span><span class="StringLit">&quot;hello ic&quot;</span><span class="Punctuation">)</span><span class="Punctuation">)</span>
    319. 

  319. 

  320.   <span class="Identifier">assert</span> <span class="Identifier">mySeq</span><span class="Operator">.</span><span class="Identifier">len</span> <span class="Operator">==</span> <span class="DecNumber">2</span>
    321. 

  321.   <span class="Identifier">assert</span> <span class="Identifier">mySeq</span><span class="Punctuation">[</span><span class="DecNumber">1</span><span class="Punctuation">]</span><span class="Operator">.</span><span class="Identifier">strVal</span> <span class="Operator">==</span> <span class="StringLit">&quot;hello ic&quot;</span></pre>
    322. 

  322.     <a href="https://github.com/nim-lang/Nim/tree/devel/lib/core/macrocache.nim#L81" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
    323. 

  323. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/core/macrocache.nim#L81" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
    324. 

  324. 

  325.   </dd>
    326. 

  326. </div>
    327. 

  327. 

  328. </div>
    329. 

  329. <div id="contains-procs-all">
    330. 

  330.   <div id="contains,CacheTable,string">
    331. 

  331.   <dt><pre><span class="Keyword">proc</span> <a href="#contains%2CCacheTable%2Cstring"><span class="Identifier">contains</span></a><span class="Other">(</span><span class="Identifier">t</span><span class="Other">:</span> <a href="macrocache.html#CacheTable"><span class="Identifier">CacheTable</span></a><span class="Other">;</span> <span class="Identifier">key</span><span class="Other">:</span> <a href="system.html#string"><span class="Identifier">string</span></a><span class="Other">)</span><span class="Other">:</span> <a href="system.html#bool"><span class="Identifier">bool</span></a> {.<span class="Identifier">inline</span><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="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>
    332. 

  332.     <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
    333. 

  333.   <dd>
    334. 

  334.     
    335. 

  335.     Alias of <a class="reference internal nimdoc" title="proc hasKey(t: CacheTable; key: string): bool" href="#hasKey,CacheTable,string">hasKey</a> for use with the <tt class="docutils literal"><span class="pre"><span class="Keyword">in</span></span></tt> operator.
    336. 

  336. <p><strong class="examples_text">Example:</strong></p>
    337. 

  337. <pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Identifier">macros</span>
    338. 

  338. <span class="Keyword">const</span> <span class="Identifier">mcTable</span> <span class="Operator">=</span> <span class="RawData">CacheTable&quot;containsEx&quot;</span>
    339. 

  339. <span class="Keyword">static</span><span class="Punctuation">:</span>
    340. 

  340.   <span class="Identifier">mcTable</span><span class="Punctuation">[</span><span class="StringLit">&quot;foo&quot;</span><span class="Punctuation">]</span> <span class="Operator">=</span> <span class="Identifier">newEmptyNode</span><span class="Punctuation">(</span><span class="Punctuation">)</span>
    341. 

  341.   <span class="Comment"># Will be true since we gave it a value before</span>
    342. 

  342.   <span class="Identifier">assert</span> <span class="StringLit">&quot;foo&quot;</span> <span class="Keyword">in</span> <span class="Identifier">mcTable</span></pre>
    343. 

  343.     <a href="https://github.com/nim-lang/Nim/tree/devel/lib/core/macrocache.nim#L215" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
    344. 

  344. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/core/macrocache.nim#L215" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
    345. 

  345. 

  346.   </dd>
    347. 

  347. </div>
    348. 

  348. 

  349. </div>
    350. 

  350. <div id="hasKey-procs-all">
    351. 

  351.   <div id="hasKey,CacheTable,string">
    352. 

  352.   <dt><pre><span class="Keyword">proc</span> <a href="#hasKey%2CCacheTable%2Cstring"><span class="Identifier">hasKey</span></a><span class="Other">(</span><span class="Identifier">t</span><span class="Other">:</span> <a href="macrocache.html#CacheTable"><span class="Identifier">CacheTable</span></a><span class="Other">;</span> <span class="Identifier">key</span><span class="Other">:</span> <a href="system.html#string"><span class="Identifier">string</span></a><span class="Other">)</span><span class="Other">:</span> <a href="system.html#bool"><span class="Identifier">bool</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>
    353. 

  353.     <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
    354. 

  354.   <dd>
    355. 

  355.     
    356. 

  356.     <p>Returns true if <tt class="docutils literal"><span class="pre"><span class="Identifier">key</span></span></tt> is in the table <tt class="docutils literal"><span class="pre"><span class="Identifier">t</span></span></tt>.</p>
    357. 

  357. <p>See also:</p>
    358. 

  358. <ul class="simple"><li><a class="reference internal nimdoc" title="proc contains(t: CacheTable; key: string): bool" href="#contains,CacheTable,string">contains proc</a> for use with the <tt class="docutils literal"><span class="pre"><span class="Keyword">in</span></span></tt> operator</li>
    359. 

  359. </ul>
    360. 

  360. 

  361. <p><strong class="examples_text">Example:</strong></p>
    362. 

  362. <pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Identifier">macros</span>
    363. 

  363. <span class="Keyword">const</span> <span class="Identifier">mcTable</span> <span class="Operator">=</span> <span class="RawData">CacheTable&quot;hasKeyEx&quot;</span>
    364. 

  364. <span class="Keyword">static</span><span class="Punctuation">:</span>
    365. 

  365.   <span class="Identifier">assert</span> <span class="Keyword">not</span> <span class="Identifier">mcTable</span><span class="Operator">.</span><span class="Identifier">hasKey</span><span class="Punctuation">(</span><span class="StringLit">&quot;foo&quot;</span><span class="Punctuation">)</span>
    366. 

  366.   <span class="Identifier">mcTable</span><span class="Punctuation">[</span><span class="StringLit">&quot;foo&quot;</span><span class="Punctuation">]</span> <span class="Operator">=</span> <span class="Identifier">newEmptyNode</span><span class="Punctuation">(</span><span class="Punctuation">)</span>
    367. 

  367.   <span class="Comment"># Will now be true since we inserted a value</span>
    368. 

  368.   <span class="Identifier">assert</span> <span class="Identifier">mcTable</span><span class="Operator">.</span><span class="Identifier">hasKey</span><span class="Punctuation">(</span><span class="StringLit">&quot;foo&quot;</span><span class="Punctuation">)</span></pre>
    369. 

  369.     <a href="https://github.com/nim-lang/Nim/tree/devel/lib/core/macrocache.nim#L200" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
    370. 

  370. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/core/macrocache.nim#L200" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
    371. 

  371. 

  372.   </dd>
    373. 

  373. </div>
    374. 

  374. 

  375. </div>
    376. 

  376. <div id="inc-procs-all">
    377. 

  377.   <div id="inc,CacheCounter,int">
    378. 

  378.   <dt><pre><span class="Keyword">proc</span> <a href="#inc%2CCacheCounter%2Cint"><span class="Identifier">inc</span></a><span class="Other">(</span><span class="Identifier">c</span><span class="Other">:</span> <a href="macrocache.html#CacheCounter"><span class="Identifier">CacheCounter</span></a><span class="Other">;</span> <span class="Identifier">by</span> <span class="Other">=</span> <span class="DecNumber">1</span><span class="Other">)</span> {.<span class="Identifier">magic</span><span class="Other">:</span> <span class="StringLit">&quot;NccInc&quot;</span><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="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>
    379. 

  379.                                     <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
    380. 

  380.   <dd>
    381. 

  381.     
    382. 

  382.     Increments the counter <tt class="docutils literal"><span class="pre"><span class="Identifier">c</span></span></tt> with the value <tt class="docutils literal"><span class="pre"><span class="Identifier">by</span></span></tt>.
    383. 

  383. <p><strong class="examples_text">Example:</strong></p>
    384. 

  384. <pre class="listing"><span class="Keyword">static</span><span class="Punctuation">:</span>
    385. 

  385.   <span class="Keyword">let</span> <span class="Identifier">counter</span> <span class="Operator">=</span> <span class="RawData">CacheCounter&quot;incTest&quot;</span>
    386. 

  386.   <span class="Identifier">inc</span> <span class="Identifier">counter</span>
    387. 

  387.   <span class="Identifier">inc</span> <span class="Identifier">counter</span><span class="Punctuation">,</span> <span class="DecNumber">5</span>
    388. 

  388. 

  389.   <span class="Identifier">assert</span> <span class="Identifier">counter</span><span class="Operator">.</span><span class="Identifier">value</span> <span class="Operator">==</span> <span class="DecNumber">6</span></pre>
    390. 

  390.     <a href="https://github.com/nim-lang/Nim/tree/devel/lib/core/macrocache.nim#L71" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
    391. 

  391. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/core/macrocache.nim#L71" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
    392. 

  392. 

  393.   </dd>
    394. 

  394. </div>
    395. 

  395. 

  396. </div>
    397. 

  397. <div id="incl-procs-all">
    398. 

  398.   <div id="incl,CacheSeq,NimNode">
    399. 

  399.   <dt><pre><span class="Keyword">proc</span> <a href="#incl%2CCacheSeq%2CNimNode"><span class="Identifier">incl</span></a><span class="Other">(</span><span class="Identifier">s</span><span class="Other">:</span> <a href="macrocache.html#CacheSeq"><span class="Identifier">CacheSeq</span></a><span class="Other">;</span> <span class="Identifier">value</span><span class="Other">:</span> <a href="system.html#NimNode"><span class="Identifier">NimNode</span></a><span class="Other">)</span> {.<span class="Identifier">magic</span><span class="Other">:</span> <span class="StringLit">&quot;NcsIncl&quot;</span><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="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>
    400. 

  400.     <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
    401. 

  401.   <dd>
    402. 

  402.     
    403. 

  403.     Adds <tt class="docutils literal"><span class="pre"><span class="Identifier">value</span></span></tt> to <tt class="docutils literal"><span class="pre"><span class="Identifier">s</span></span></tt>.<div class="admonition admonition-info"><span class="admonition-info-text"><b>Hint:</b></span>
    404. 

  404. This doesn't do anything if <tt class="docutils literal"><span class="pre"><span class="Identifier">value</span></span></tt> is already in <tt class="docutils literal"><span class="pre"><span class="Identifier">s</span></span></tt>.</div>
    405. 

  405. 

  406. <p><strong class="examples_text">Example:</strong></p>
    407. 

  407. <pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Identifier">macros</span>
    408. 

  408. <span class="Keyword">const</span> <span class="Identifier">mySeq</span> <span class="Operator">=</span> <span class="RawData">CacheSeq&quot;inclTest&quot;</span>
    409. 

  409. 

  410. <span class="Keyword">static</span><span class="Punctuation">:</span>
    411. 

  411.   <span class="Identifier">mySeq</span><span class="Operator">.</span><span class="Identifier">incl</span><span class="Punctuation">(</span><span class="Identifier">newLit</span><span class="Punctuation">(</span><span class="DecNumber">5</span><span class="Punctuation">)</span><span class="Punctuation">)</span>
    412. 

  412.   <span class="Identifier">mySeq</span><span class="Operator">.</span><span class="Identifier">incl</span><span class="Punctuation">(</span><span class="Identifier">newLit</span><span class="Punctuation">(</span><span class="DecNumber">5</span><span class="Punctuation">)</span><span class="Punctuation">)</span>
    413. 

  413. 

  414.   <span class="Comment"># still one element</span>
    415. 

  415.   <span class="Identifier">assert</span> <span class="Identifier">mySeq</span><span class="Operator">.</span><span class="Identifier">len</span> <span class="Operator">==</span> <span class="DecNumber">1</span></pre>
    416. 

  416.     <a href="https://github.com/nim-lang/Nim/tree/devel/lib/core/macrocache.nim#L94" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
    417. 

  417. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/core/macrocache.nim#L94" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
    418. 

  418. 

  419.   </dd>
    420. 

  420. </div>
    421. 

  421. 

  422. </div>
    423. 

  423. <div id="len-procs-all">
    424. 

  424.   <div id="len,CacheSeq">
    425. 

  425.   <dt><pre><span class="Keyword">proc</span> <a href="#len%2CCacheSeq"><span class="Identifier">len</span></a><span class="Other">(</span><span class="Identifier">s</span><span class="Other">:</span> <a href="macrocache.html#CacheSeq"><span class="Identifier">CacheSeq</span></a><span class="Other">)</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a> {.<span class="Identifier">magic</span><span class="Other">:</span> <span class="StringLit">&quot;NcsLen&quot;</span><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="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>
    426. 

  426.   <dd>
    427. 

  427.     
    428. 

  428.     Returns the length of <tt class="docutils literal"><span class="pre"><span class="Identifier">s</span></span></tt>.
    429. 

  429. <p><strong class="examples_text">Example:</strong></p>
    430. 

  430. <pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Identifier">macros</span>
    431. 

  431. 

  432. <span class="Keyword">const</span> <span class="Identifier">mySeq</span> <span class="Operator">=</span> <span class="RawData">CacheSeq&quot;lenTest&quot;</span>
    433. 

  433. <span class="Keyword">static</span><span class="Punctuation">:</span>
    434. 

  434.   <span class="Keyword">let</span> <span class="Identifier">val</span> <span class="Operator">=</span> <span class="Identifier">newLit</span><span class="Punctuation">(</span><span class="StringLit">&quot;helper&quot;</span><span class="Punctuation">)</span>
    435. 

  435.   <span class="Identifier">mySeq</span><span class="Operator">.</span><span class="Identifier">add</span><span class="Punctuation">(</span><span class="Identifier">val</span><span class="Punctuation">)</span>
    436. 

  436.   <span class="Identifier">assert</span> <span class="Identifier">mySeq</span><span class="Operator">.</span><span class="Identifier">len</span> <span class="Operator">==</span> <span class="DecNumber">1</span>
    437. 

  437. 

  438.   <span class="Identifier">mySeq</span><span class="Operator">.</span><span class="Identifier">add</span><span class="Punctuation">(</span><span class="Identifier">val</span><span class="Punctuation">)</span>
    439. 

  439.   <span class="Identifier">assert</span> <span class="Identifier">mySeq</span><span class="Operator">.</span><span class="Identifier">len</span> <span class="Operator">==</span> <span class="DecNumber">2</span></pre>
    440. 

  440.     <a href="https://github.com/nim-lang/Nim/tree/devel/lib/core/macrocache.nim#L109" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
    441. 

  441. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/core/macrocache.nim#L109" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
    442. 

  442. 

  443.   </dd>
    444. 

  444. </div>
    445. 

  445. <div id="len,CacheTable">
    446. 

  446.   <dt><pre><span class="Keyword">proc</span> <a href="#len%2CCacheTable"><span class="Identifier">len</span></a><span class="Other">(</span><span class="Identifier">t</span><span class="Other">:</span> <a href="macrocache.html#CacheTable"><span class="Identifier">CacheTable</span></a><span class="Other">)</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a> {.<span class="Identifier">magic</span><span class="Other">:</span> <span class="StringLit">&quot;NctLen&quot;</span><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="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>
    447. 

  447.                                <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
    448. 

  448.   <dd>
    449. 

  449.     
    450. 

  450.     Returns the number of elements in <tt class="docutils literal"><span class="pre"><span class="Identifier">t</span></span></tt>.
    451. 

  451. <p><strong class="examples_text">Example:</strong></p>
    452. 

  452. <pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Identifier">macros</span>
    453. 

  453. 

  454. <span class="Keyword">const</span> <span class="Identifier">dataTable</span> <span class="Operator">=</span> <span class="RawData">CacheTable&quot;lenTest&quot;</span>
    455. 

  455. <span class="Keyword">static</span><span class="Punctuation">:</span>
    456. 

  456.   <span class="Identifier">dataTable</span><span class="Punctuation">[</span><span class="StringLit">&quot;key&quot;</span><span class="Punctuation">]</span> <span class="Operator">=</span> <span class="Identifier">newLit</span><span class="Punctuation">(</span><span class="DecNumber">5</span><span class="Punctuation">)</span>
    457. 

  457.   <span class="Identifier">assert</span> <span class="Identifier">dataTable</span><span class="Operator">.</span><span class="Identifier">len</span> <span class="Operator">==</span> <span class="DecNumber">1</span></pre>
    458. 

  458.     <a href="https://github.com/nim-lang/Nim/tree/devel/lib/core/macrocache.nim#L178" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
    459. 

  459. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/core/macrocache.nim#L178" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
    460. 

  460. 

  461.   </dd>
    462. 

  462. </div>
    463. 

  463. 

  464. </div>
    465. 

  465. <div id="value-procs-all">
    466. 

  466.   <div id="value,CacheCounter">
    467. 

  467.   <dt><pre><span class="Keyword">proc</span> <a href="#value%2CCacheCounter"><span class="Identifier">value</span></a><span class="Other">(</span><span class="Identifier">c</span><span class="Other">:</span> <a href="macrocache.html#CacheCounter"><span class="Identifier">CacheCounter</span></a><span class="Other">)</span><span class="Other">:</span> <a href="system.html#int"><span class="Identifier">int</span></a> {.<span class="Identifier">magic</span><span class="Other">:</span> <span class="StringLit">&quot;NccValue&quot;</span><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="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>
    468. 

  468.                                    <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
    469. 

  469.   <dd>
    470. 

  470.     
    471. 

  471.     Returns the value of a counter <tt class="docutils literal"><span class="pre"><span class="Identifier">c</span></span></tt>.
    472. 

  472. <p><strong class="examples_text">Example:</strong></p>
    473. 

  473. <pre class="listing"><span class="Keyword">static</span><span class="Punctuation">:</span>
    474. 

  474.   <span class="Keyword">let</span> <span class="Identifier">counter</span> <span class="Operator">=</span> <span class="RawData">CacheCounter&quot;valTest&quot;</span>
    475. 

  475.   <span class="Comment"># default value is 0</span>
    476. 

  476.   <span class="Identifier">assert</span> <span class="Identifier">counter</span><span class="Operator">.</span><span class="Identifier">value</span> <span class="Operator">==</span> <span class="DecNumber">0</span>
    477. 

  477. 

  478.   <span class="Identifier">inc</span> <span class="Identifier">counter</span>
    479. 

  479.   <span class="Identifier">assert</span> <span class="Identifier">counter</span><span class="Operator">.</span><span class="Identifier">value</span> <span class="Operator">==</span> <span class="DecNumber">1</span></pre>
    480. 

  480.     <a href="https://github.com/nim-lang/Nim/tree/devel/lib/core/macrocache.nim#L60" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
    481. 

  481. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/core/macrocache.nim#L60" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
    482. 

  482. 

  483.   </dd>
    484. 

  484. </div>
    485. 

  485. 

  486. </div>
    487. 

  487. 

  488.   </dl>
    489. 

  489. </div>
    490. 

  490. <div class="section" id="15">
    491. 

  491.   <h1><a class="toc-backref" href="#15">Iterators</a></h1>
    492. 

  492.   <dl class="item">
    493. 

  493.     <div id="items-iterators-all">
    494. 

  494.   <div id="items.i,CacheSeq">
    495. 

  495.   <dt><pre><span class="Keyword">iterator</span> <a href="#items.i%2CCacheSeq"><span class="Identifier">items</span></a><span class="Other">(</span><span class="Identifier">s</span><span class="Other">:</span> <a href="macrocache.html#CacheSeq"><span class="Identifier">CacheSeq</span></a><span class="Other">)</span><span class="Other">:</span> <a href="system.html#NimNode"><span class="Identifier">NimNode</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>
    496. 

  496.   <dd>
    497. 

  497.     
    498. 

  498.     Iterates over each item in <tt class="docutils literal"><span class="pre"><span class="Identifier">s</span></span></tt>.
    499. 

  499. <p><strong class="examples_text">Example:</strong></p>
    500. 

  500. <pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Identifier">macros</span>
    501. 

  501. <span class="Keyword">const</span> <span class="Identifier">myseq</span> <span class="Operator">=</span> <span class="RawData">CacheSeq&quot;itemsTest&quot;</span>
    502. 

  502. 

  503. <span class="Keyword">static</span><span class="Punctuation">:</span>
    504. 

  504.   <span class="Identifier">myseq</span><span class="Operator">.</span><span class="Identifier">add</span><span class="Punctuation">(</span><span class="Identifier">newLit</span><span class="Punctuation">(</span><span class="DecNumber">5</span><span class="Punctuation">)</span><span class="Punctuation">)</span>
    505. 

  505.   <span class="Identifier">myseq</span><span class="Operator">.</span><span class="Identifier">add</span><span class="Punctuation">(</span><span class="Identifier">newLit</span><span class="Punctuation">(</span><span class="DecNumber">42</span><span class="Punctuation">)</span><span class="Punctuation">)</span>
    506. 

  506. 

  507.   <span class="Keyword">for</span> <span class="Identifier">val</span> <span class="Keyword">in</span> <span class="Identifier">myseq</span><span class="Punctuation">:</span>
    508. 

  508.     <span class="Comment"># check that all values in `myseq` are int literals</span>
    509. 

  509.     <span class="Identifier">assert</span> <span class="Identifier">val</span><span class="Operator">.</span><span class="Identifier">kind</span> <span class="Operator">==</span> <span class="Identifier">nnkIntLit</span></pre>
    510. 

  510.     <a href="https://github.com/nim-lang/Nim/tree/devel/lib/core/macrocache.nim#L146" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
    511. 

  511. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/core/macrocache.nim#L146" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
    512. 

  512. 

  513.   </dd>
    514. 

  514. </div>
    515. 

  515. 

  516. </div>
    517. 

  517. <div id="pairs-iterators-all">
    518. 

  518.   <div id="pairs.i,CacheTable">
    519. 

  519.   <dt><pre><span class="Keyword">iterator</span> <a href="#pairs.i%2CCacheTable"><span class="Identifier">pairs</span></a><span class="Other">(</span><span class="Identifier">t</span><span class="Other">:</span> <a href="macrocache.html#CacheTable"><span class="Identifier">CacheTable</span></a><span class="Other">)</span><span class="Other">:</span> <span class="Other">(</span><a href="system.html#string"><span class="Identifier">string</span></a><span class="Other">,</span> <a href="system.html#NimNode"><span class="Identifier">NimNode</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="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>
    520. 

  520.     <span class="Identifier">forbids</span><span class="Other">:</span> <span class="Other">[</span><span class="Other">]</span></span>.}</pre></dt>
    521. 

  521.   <dd>
    522. 

  522.     
    523. 

  523.     Iterates over all <tt class="docutils literal"><span class="pre"><span class="Punctuation">(</span><span class="Identifier">key</span><span class="Punctuation">,</span> <span class="Identifier">value</span><span class="Punctuation">)</span></span></tt> pairs in <tt class="docutils literal"><span class="pre"><span class="Identifier">t</span></span></tt>.
    524. 

  524. <p><strong class="examples_text">Example:</strong></p>
    525. 

  525. <pre class="listing"><span class="Keyword">import</span> <span class="Identifier">std</span><span class="Operator">/</span><span class="Identifier">macros</span>
    526. 

  526. <span class="Keyword">const</span> <span class="Identifier">mytabl</span> <span class="Operator">=</span> <span class="RawData">CacheTable&quot;values&quot;</span>
    527. 

  527. 

  528. <span class="Keyword">static</span><span class="Punctuation">:</span>
    529. 

  529.   <span class="Identifier">mytabl</span><span class="Punctuation">[</span><span class="StringLit">&quot;intVal&quot;</span><span class="Punctuation">]</span> <span class="Operator">=</span> <span class="Identifier">newLit</span><span class="Punctuation">(</span><span class="DecNumber">5</span><span class="Punctuation">)</span>
    530. 

  530.   <span class="Identifier">mytabl</span><span class="Punctuation">[</span><span class="StringLit">&quot;otherVal&quot;</span><span class="Punctuation">]</span> <span class="Operator">=</span> <span class="Identifier">newLit</span><span class="Punctuation">(</span><span class="DecNumber">6</span><span class="Punctuation">)</span>
    531. 

  531.   <span class="Keyword">for</span> <span class="Identifier">key</span><span class="Punctuation">,</span> <span class="Identifier">val</span> <span class="Keyword">in</span> <span class="Identifier">mytabl</span><span class="Punctuation">:</span>
    532. 

  532.     <span class="Comment"># make sure that we actually get the same keys</span>
    533. 

  533.     <span class="Identifier">assert</span> <span class="Identifier">key</span> <span class="Keyword">in</span> <span class="Punctuation">[</span><span class="StringLit">&quot;intVal&quot;</span><span class="Punctuation">,</span> <span class="StringLit">&quot;otherVal&quot;</span><span class="Punctuation">]</span>
    534. 

  534. 

  535.     <span class="Comment"># all vals are int literals</span>
    536. 

  536.     <span class="Identifier">assert</span> <span class="Identifier">val</span><span class="Operator">.</span><span class="Identifier">kind</span> <span class="Operator">==</span> <span class="Identifier">nnkIntLit</span></pre>
    537. 

  537.     <a href="https://github.com/nim-lang/Nim/tree/devel/lib/core/macrocache.nim#L229" class="link-seesrc" target="_blank">Source</a>&nbsp;&nbsp;
    538. 

  538. <a href="https://github.com/nim-lang/Nim/edit/devel/lib/core/macrocache.nim#L229" class="link-seesrc" target="_blank" >Edit</a>&nbsp;&nbsp;
    539. 

  539. 

  540.   </dd>
    541. 

  541. </div>
    542. 

  542. 

  543. </div>
    544. 

  544. 

  545.   </dl>
    546. 

  546. </div>
    547. 

  547. 

  548.   </div>
    549. 

  549. </div>
    550. 

  550. 

  551.       <div class="twelve-columns footer">
    552. 

  552.         <span class="nim-sprite"></span>
    553. 

  553.         <br>
    554. 

  554.         <small style="color: var(--hint);">Made with Nim. Generated: 2025-02-06 22:28:19 UTC</small>
    555. 

  555.       </div>
    556. 

  556.     </div>
    557. 

  557.   </div>
    558. 

  558.       <script defer data-domain="nim-lang.org" src="https://plausible.io/js/plausible.js"></script>
    559. 

  559.     
    560. 

  560. </body>
    561. 

  561. </html>
    562. 

  562.