/
sequtils2.html
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/
sequtils2.html
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<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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<link href='https://fonts.googleapis.com/css?family=Source+Code+Pro:400,500,600' rel='stylesheet' type='text/css'/>
<!-- CSS -->
<title>sequtils2</title>
<style type="text/css" >
/*
Stylesheet for use with Docutils/rst2html.
See http://docutils.sf.net/docs/howto/html-stylesheets.html for how to
customize this style sheet.
Modified from Chad Skeeters' rst2html-style
https://bitbucket.org/cskeeters/rst2html-style/
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}
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-moz-border-radius: 6px;
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table.line-nums-table {
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/* rst2html default used to remove borders from tables and images */
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table.borderless td, table.borderless th {
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The right padding separates the table cells. */
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/* Override more specific margin styles with "! important". */
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margin-right: auto; }
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/* reset inner alignment in figures */
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<h1 class="title">sequtils2</h1>
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<li>
<a class="reference reference-toplevel" href="#12" id="62">Procs</a>
<ul class="simple simple-toc-section">
<li><a class="reference" href="#%2B%2CopenArray%5BT%5D%2CopenArray%5BT%5D"
title="`+`[T](a, b: openArray[T]): seq[T]"><wbr />`+`<span class="attachedType"></span></a></li>
<li><a class="reference" href="#-%2CopenArray%5BT%5D%2CopenArray%5BT%5D"
title="`-`[T](a, b: openArray[T]): seq[T]"><wbr />`-`<span class="attachedType"></span></a></li>
<li><a class="reference" href="#%2A%2CopenArray%5BT%5D%2CopenArray%5BT%5D"
title="`*`[T](a, b: openArray[T]): seq[T]"><wbr />`*`<span class="attachedType"></span></a></li>
<li><a class="reference" href="#%2F%2CopenArray%5BT%5D%2CopenArray%5BT%5D"
title="`/`[T](a, b: openArray[T]): seq[T]"><wbr />`/`<span class="attachedType"></span></a></li>
<li><a class="reference" href="#%2A%2A%2CopenArray%5BT%5D%2CopenArray%5BV%5D"
title="`**`[T, V](s: openArray[T]; t: openArray[V]): seq[tuple[a: T, b: V]]"><wbr />`**`<span class="attachedType"></span></a></li>
<li><a class="reference" href="#count%2CopenArray%5BT%5D%2Cproc%28T%29"
title="count[T](s: openArray[T]; cond: proc (a: T): bool): Natural"><wbr />count<span class="attachedType"></span></a></li>
<li><a class="reference" href="#filterWithIndex%2CopenArray%5BT%5D%2Cproc%28T%2Cint%29"
title="filterWithIndex[T](s: openArray[T]; filterF: proc (el: T; i: int): bool): seq[T]"><wbr />filter<wbr />With<wbr />Index<span class="attachedType"></span></a></li>
<li><a class="reference" href="#first%2CopenArray%5BT%5D%2Cproc%28T%29"
title="first[T](s: openArray[T]; predicate: proc (el: T): bool): Option[T]"><wbr />first<span class="attachedType"></span></a></li>
<li><a class="reference" href="#firstWithIndex%2CopenArray%5BT%5D%2Cproc%28T%2Cint%29"
title="firstWithIndex[T](s: openArray[T]; predicate: proc (el: T; i: int): bool): Option[T]"><wbr />first<wbr />With<wbr />Index<span class="attachedType"></span></a></li>
<li><a class="reference" href="#forEach%2CopenArray%5BT%5D%2Cproc%28T%29"
title="forEach[T](s: openArray[T]; action: proc (el: T))"><wbr />for<wbr />Each<span class="attachedType"></span></a></li>
<li><a class="reference" href="#forEachWithIndex%2CopenArray%5BT%5D%2Cproc%28T%2Cint%29"
title="forEachWithIndex[T](s: openArray[T]; action: proc (el: T; i: int))"><wbr />for<wbr />Each<wbr />With<wbr />Index<span class="attachedType"></span></a></li>
<li><a class="reference" href="#last%2CopenArray%5BT%5D%2Cproc%28T%29"
title="last[T](s: openArray[T]; predicate: proc (el: T): bool): Option[T]"><wbr />last<span class="attachedType"></span></a></li>
<li><a class="reference" href="#lastWithIndex%2CopenArray%5BT%5D%2Cproc%28T%2Cint%29"
title="lastWithIndex[T](s: openArray[T]; filterF: proc (el: T; i: int): bool): Option[T]"><wbr />last<wbr />With<wbr />Index<span class="attachedType"></span></a></li>
<li><a class="reference" href="#mapWithIndex%2CopenArray%5BT%5D%2Cproc%28T%2Cint%29"
title="mapWithIndex[T, V](s: openArray[T]; mappingF: proc (el: T; i: int): V): seq[V]"><wbr />map<wbr />With<wbr />Index<span class="attachedType"></span></a></li>
<li><a class="reference" href="#maxBy%2CopenArray%5BT%5D%2Cproc%28T%29"
title="maxBy[T, V](s: openArray[T]; keyF: proc (a: T): V): T"><wbr />max<wbr />By<span class="attachedType"></span></a></li>
<li><a class="reference" href="#minBy%2CopenArray%5BT%5D%2Cproc%28T%29"
title="minBy[T, V](s: openArray[T]; keyF: proc (a: T): V): T"><wbr />min<wbr />By<span class="attachedType"></span></a></li>
<li><a class="reference" href="#product%2CopenArray%5BT%5D"
title="product[T](s: openArray[T]): T"><wbr />product<span class="attachedType"></span></a></li>
<li><a class="reference" href="#reduce%2CopenArray%5BT%5D%2Cproc%28T%2CT%29"
title="reduce[T](s: openArray[T]; accumulator: proc (a, b: T): T): T"><wbr />reduce<span class="attachedType"></span></a></li>
<li><a class="reference" href="#reduceReverse%2CopenArray%5BT%5D%2Cproc%28T%2CT%29"
title="reduceReverse[T](s: openArray[T]; accumulator: proc (a, b: T): T): T"><wbr />reduce<wbr />Reverse<span class="attachedType"></span></a></li>
<li><a class="reference" href="#reverse%2CopenArray%5BT%5D"
title="reverse[T](s: openArray[T]): seq[T]"><wbr />reverse<span class="attachedType"></span></a></li>
<li><a class="reference" href="#sortBy%2CopenArray%5BT%5D%2Cproc%28T%29"
title="sortBy[T, V](s: openArray[T]; keyF: proc (a: T): V): seq[T]"><wbr />sort<wbr />By<span class="attachedType"></span></a></li>
<li><a class="reference" href="#sum%2CopenArray%5BT%5D"
title="sum[T](s: openArray[T]): T"><wbr />sum<span class="attachedType"></span></a></li>
<li><a class="reference" href="#uniques%2Cseq%5BT%5D%5BT%5D"
title="uniques[T](s: seq[T]; preserve_order = true): seq[T]"><wbr />uniques<span class="attachedType"></span></a></li>
<li><a class="reference" href="#zipWithIndex%2CopenArray%5BT%5D"
title="zipWithIndex[T](s: openArray[T]): seq[tuple[el: T, i: int]]"><wbr />zip<wbr />With<wbr />Index<span class="attachedType"></span></a></li>
</ul>
</li>
</ul>
</div>
<div class="nine columns" id="content">
<div id="tocRoot"></div>
<p class="module-desc"></p>
<div class="section" id="12">
<h1><a class="toc-backref" href="#12">Procs</a></h1>
<dl class="item">
<a id="+,openArray[T],openArray[T]"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#%2B%2CopenArray%5BT%5D%2CopenArray%5BT%5D"><span class="Identifier">`+`</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">b</span><span class="Other">:</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">seq</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span></pre></dt>
<dd>
Element-wise sum of openarray
</dd>
<a id="-,openArray[T],openArray[T]"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#-%2CopenArray%5BT%5D%2CopenArray%5BT%5D"><span class="Identifier">`-`</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">b</span><span class="Other">:</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">seq</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span></pre></dt>
<dd>
Element-wise difference of openarray
</dd>
<a id="*,openArray[T],openArray[T]"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#%2A%2CopenArray%5BT%5D%2CopenArray%5BT%5D"><span class="Identifier">`*`</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">b</span><span class="Other">:</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">seq</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span></pre></dt>
<dd>
Element-wise product of openarray
</dd>
<a id="/,openArray[T],openArray[T]"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#%2F%2CopenArray%5BT%5D%2CopenArray%5BT%5D"><span class="Identifier">`/`</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">b</span><span class="Other">:</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">seq</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span></pre></dt>
<dd>
Element-wise division of openarray
</dd>
<a id="**,openArray[T],openArray[V]"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#%2A%2A%2CopenArray%5BT%5D%2CopenArray%5BV%5D"><span class="Identifier">`**`</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">,</span> <span class="Identifier">V</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">s</span><span class="Other">:</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">;</span> <span class="Identifier">t</span><span class="Other">:</span> <span class="Identifier">openArray</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">seq</span><span class="Other">[</span><span class="Keyword">tuple</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">b</span><span class="Other">:</span> <span class="Identifier">V</span><span class="Other">]</span><span class="Other">]</span></pre></dt>
<dd>
Return a seq of all possible pairs between s and t
</dd>
<a id="count,openArray[T],proc(T)"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#count%2CopenArray%5BT%5D%2Cproc%28T%29"><span class="Identifier">count</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">s</span><span class="Other">:</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">;</span> <span class="Identifier">cond</span><span class="Other">:</span> <span class="Keyword">proc</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="Other">:</span> <span class="Identifier">bool</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">Natural</span></pre></dt>
<dd>
Count the elements in s that satisfy cond
</dd>
<a id="filterWithIndex,openArray[T],proc(T,int)"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#filterWithIndex%2CopenArray%5BT%5D%2Cproc%28T%2Cint%29"><span class="Identifier">filterWithIndex</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">s</span><span class="Other">:</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">;</span> <span class="Identifier">filterF</span><span class="Other">:</span> <span class="Keyword">proc</span> <span class="Other">(</span><span class="Identifier">el</span><span class="Other">:</span> <span class="Identifier">T</span><span class="Other">;</span> <span class="Identifier">i</span><span class="Other">:</span> <span class="Identifier">int</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">bool</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">seq</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span></pre></dt>
<dd>
Alternative form for filter function where you have in input in filterF also the index of the element
</dd>
<a id="first,openArray[T],proc(T)"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#first%2CopenArray%5BT%5D%2Cproc%28T%29"><span class="Identifier">first</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">s</span><span class="Other">:</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">;</span> <span class="Identifier">predicate</span><span class="Other">:</span> <span class="Keyword">proc</span> <span class="Other">(</span><span class="Identifier">el</span><span class="Other">:</span> <span class="Identifier">T</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">bool</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">Option</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span></pre></dt>
<dd>
Return the first element of openArray s that match the predicate encapsulated as Option[T]. If no one element match it the function returns none(T)
</dd>
<a id="firstWithIndex,openArray[T],proc(T,int)"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#firstWithIndex%2CopenArray%5BT%5D%2Cproc%28T%2Cint%29"><span class="Identifier">firstWithIndex</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">s</span><span class="Other">:</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">;</span> <span class="Identifier">predicate</span><span class="Other">:</span> <span class="Keyword">proc</span> <span class="Other">(</span><span class="Identifier">el</span><span class="Other">:</span> <span class="Identifier">T</span><span class="Other">;</span> <span class="Identifier">i</span><span class="Other">:</span> <span class="Identifier">int</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">bool</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">Option</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span></pre></dt>
<dd>
Like first function, but predicate function receives in input also the index of the element
</dd>
<a id="forEach,openArray[T],proc(T)"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#forEach%2CopenArray%5BT%5D%2Cproc%28T%29"><span class="Identifier">forEach</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">s</span><span class="Other">:</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">;</span> <span class="Identifier">action</span><span class="Other">:</span> <span class="Keyword">proc</span> <span class="Other">(</span><span class="Identifier">el</span><span class="Other">:</span> <span class="Identifier">T</span><span class="Other">)</span><span class="Other">)</span></pre></dt>
<dd>
Execute action on each element of s
</dd>
<a id="forEachWithIndex,openArray[T],proc(T,int)"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#forEachWithIndex%2CopenArray%5BT%5D%2Cproc%28T%2Cint%29"><span class="Identifier">forEachWithIndex</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">s</span><span class="Other">:</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">;</span> <span class="Identifier">action</span><span class="Other">:</span> <span class="Keyword">proc</span> <span class="Other">(</span><span class="Identifier">el</span><span class="Other">:</span> <span class="Identifier">T</span><span class="Other">;</span> <span class="Identifier">i</span><span class="Other">:</span> <span class="Identifier">int</span><span class="Other">)</span><span class="Other">)</span></pre></dt>
<dd>
Execute action on each element of s with its index
</dd>
<a id="last,openArray[T],proc(T)"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#last%2CopenArray%5BT%5D%2Cproc%28T%29"><span class="Identifier">last</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">s</span><span class="Other">:</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">;</span> <span class="Identifier">predicate</span><span class="Other">:</span> <span class="Keyword">proc</span> <span class="Other">(</span><span class="Identifier">el</span><span class="Other">:</span> <span class="Identifier">T</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">bool</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">Option</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span></pre></dt>
<dd>
Return the last element of openArray s that match the predicate encapsulated as Option[T]. If no one element match it the function returns none(T)
</dd>
<a id="lastWithIndex,openArray[T],proc(T,int)"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#lastWithIndex%2CopenArray%5BT%5D%2Cproc%28T%2Cint%29"><span class="Identifier">lastWithIndex</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">s</span><span class="Other">:</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">;</span> <span class="Identifier">filterF</span><span class="Other">:</span> <span class="Keyword">proc</span> <span class="Other">(</span><span class="Identifier">el</span><span class="Other">:</span> <span class="Identifier">T</span><span class="Other">;</span> <span class="Identifier">i</span><span class="Other">:</span> <span class="Identifier">int</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">bool</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">Option</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span></pre></dt>
<dd>
Like last function, but predicate function receives in input also the index of the element
</dd>
<a id="mapWithIndex,openArray[T],proc(T,int)"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#mapWithIndex%2CopenArray%5BT%5D%2Cproc%28T%2Cint%29"><span class="Identifier">mapWithIndex</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">,</span> <span class="Identifier">V</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">s</span><span class="Other">:</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">;</span> <span class="Identifier">mappingF</span><span class="Other">:</span> <span class="Keyword">proc</span> <span class="Other">(</span><span class="Identifier">el</span><span class="Other">:</span> <span class="Identifier">T</span><span class="Other">;</span> <span class="Identifier">i</span><span class="Other">:</span> <span class="Identifier">int</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">V</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">seq</span><span class="Other">[</span><span class="Identifier">V</span><span class="Other">]</span></pre></dt>
<dd>
Alternative of map function where mappingF receive also in input the index of the element
</dd>
<a id="maxBy,openArray[T],proc(T)"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#maxBy%2CopenArray%5BT%5D%2Cproc%28T%29"><span class="Identifier">maxBy</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">,</span> <span class="Identifier">V</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">s</span><span class="Other">:</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">;</span> <span class="Identifier">keyF</span><span class="Other">:</span> <span class="Keyword">proc</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="Other">:</span> <span class="Identifier">V</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">T</span></pre></dt>
<dd>
Find the max in s by keyF criteria
</dd>
<a id="minBy,openArray[T],proc(T)"></a>
<dt><pre><span class="Keyword">proc</span> <a href="#minBy%2CopenArray%5BT%5D%2Cproc%28T%29"><span class="Identifier">minBy</span></a><span class="Other">[</span><span class="Identifier">T</span><span class="Other">,</span> <span class="Identifier">V</span><span class="Other">]</span><span class="Other">(</span><span class="Identifier">s</span><span class="Other">:</span> <span class="Identifier">openArray</span><span class="Other">[</span><span class="Identifier">T</span><span class="Other">]</span><span class="Other">;</span> <span class="Identifier">keyF</span><span class="Other">:</span> <span class="Keyword">proc</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="Other">:</span> <span class="Identifier">V</span><span class="Other">)</span><span class="Other">:</span> <span class="Identifier">T</span></pre></dt>
<dd>
<p>Find the min in s by keyF criteria</p>