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mentat/docs/apis/swift/0.1/Classes/RelResult.html
Emily Toop c5180656cc
Mentat documentation website using Jekyll (#754) 
Steps to building docs locally:

    1. Install Jekyll
    2. cd docs
    3. bundle exec jekyll serve --incremental
    4. open local docs site at http://127.0.0.1:4000/


* basic Jekyll site

* Add docs to documentation site

* Update javadoc to allow for error free builds

* Remove docs for rust dependencies

* Better display examples, about and contributing documentation for Mentat

* Version docs
2018-06-25 11:20:36 +01:00

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<!DOCTYPE html>
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<title>RelResult Class Reference</title>
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<a title="RelResult Class Reference"></a>
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<p><a href="../index.html"> Docs</a> (74% documented)</p>
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<a href="../index.html"> Reference</a>
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RelResult Class Reference
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<a href="../Classes/ColResultIterator.html">ColResultIterator</a>
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<article class="main-content">
<section>
<section class="section">
<h1>RelResult</h1>
<div class="declaration">
<div class="language">
<pre class="highlight swift"><code><span class="kd">open</span> <span class="kd">class</span> <span class="kt">RelResult</span> <span class="p">:</span> <span class="kt"><a href="../Classes/OptionalRustObject.html">OptionalRustObject</a></span></code></pre>
</div>
</div>
<p>Wraps a <code>Rel</code> result from a Mentat query.
A <code>Rel</code> result is a list of rows of <code>TypedValues</code>.
Individual rows can be fetched or the set can be iterated.</p>
<p>To fetch individual rows from a <code>RelResult</code> use <code>row(Int32)</code>.</p>
<pre class="highlight swift"><code><span class="n">query</span><span class="o">.</span><span class="n">run</span> <span class="p">{</span> <span class="n">rows</span> <span class="k">in</span>
<span class="k">let</span> <span class="nv">row1</span> <span class="o">=</span> <span class="n">rows</span><span class="o">.</span><span class="nf">row</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
<span class="k">let</span> <span class="nv">row2</span> <span class="o">=</span> <span class="n">rows</span><span class="o">.</span><span class="nf">row</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
<span class="p">}</span>
</code></pre>
<p>To iterate over the result set use standard iteration flows.</p>
<pre class="highlight swift"><code><span class="n">query</span><span class="o">.</span><span class="n">run</span> <span class="p">{</span> <span class="n">rows</span> <span class="k">in</span>
<span class="n">rows</span><span class="o">.</span><span class="n">forEach</span> <span class="p">{</span> <span class="n">row</span> <span class="k">in</span>
<span class="o">...</span>
<span class="p">}</span>
<span class="p">}</span>
</code></pre>
<p>Note that iteration is consuming and can only be done once.</p>
</section>
<section class="section task-group-section">
<div class="task-group">
<ul>
<li class="item">
<div>
<code>
<a name="/s:6Mentat9RelResultC3rowAA05TupleC0CSgs5Int32V5index_tKF"></a>
<a name="//apple_ref/swift/Method/row(index:)" class="dashAnchor"></a>
<a class="token" href="#/s:6Mentat9RelResultC3rowAA05TupleC0CSgs5Int32V5index_tKF">row(index:)</a>
</code>
</div>
<div class="height-container">
<div class="pointer-container"></div>
<section class="section">
<div class="pointer"></div>
<div class="abstract">
<p>Fetch the row at the requested index.</p>
<div class="aside aside-throws">
<p class="aside-title">Throws</p>
<p><code><a href="../Enums/PointerError.html#/s:6Mentat12PointerErrorO15pointerConsumedA2CmF">PointerError.pointerConsumed</a></code> if the result set has already been iterated.</p>
</div>
</div>
<div class="declaration">
<h4>Declaration</h4>
<div class="language">
<p class="aside-title">Swift</p>
<pre class="highlight swift"><code><span class="kd">open</span> <span class="kd">func</span> <span class="nf">row</span><span class="p">(</span><span class="nv">index</span><span class="p">:</span> <span class="kt">Int32</span><span class="p">)</span> <span class="k">throws</span> <span class="o">-&gt;</span> <span class="kt"><a href="../Classes/TupleResult.html">TupleResult</a></span><span class="p">?</span></code></pre>
</div>
</div>
<div>
<h4>Parameters</h4>
<table class="graybox">
<tbody>
<tr>
<td>
<code>
<em>index</em>
</code>
</td>
<td>
<div>
<p>the index of the row to be fetched</p>
</div>
</td>
</tr>
</tbody>
</table>
</div>
<div>
<h4>Return Value</h4>
<p>The row at the requested index as a <code><a href="../Classes/TupleResult.html">TupleResult</a></code>, if present, or nil if there is no row at that index.</p>
</div>
</section>
</div>
</li>
<li class="item">
<div>
<code>
<a name="/s:6Mentat9RelResultC7cleanupys13OpaquePointerV7pointer_tF"></a>
<a name="//apple_ref/swift/Method/cleanup(pointer:)" class="dashAnchor"></a>
<a class="token" href="#/s:6Mentat9RelResultC7cleanupys13OpaquePointerV7pointer_tF">cleanup(pointer:)</a>
</code>
</div>
<div class="height-container">
<div class="pointer-container"></div>
<section class="section">
<div class="pointer"></div>
<div class="abstract">
<p>Undocumented</p>
</div>
<div class="declaration">
<h4>Declaration</h4>
<div class="language">
<p class="aside-title">Swift</p>
<pre class="highlight swift"><code><span class="k">override</span> <span class="kd">open</span> <span class="kd">func</span> <span class="nf">cleanup</span><span class="p">(</span><span class="nv">pointer</span><span class="p">:</span> <span class="kt">OpaquePointer</span><span class="p">)</span></code></pre>
</div>
</div>
</section>
</div>
</li>
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<div class="task-group">
<ul>
<li class="item">
<div>
<code>
<a name="/s:s8SequenceP12makeIterator0C0QzyF"></a>
<a name="//apple_ref/swift/Method/makeIterator()" class="dashAnchor"></a>
<a class="token" href="#/s:s8SequenceP12makeIterator0C0QzyF">makeIterator()</a>
</code>
</div>
<div class="height-container">
<div class="pointer-container"></div>
<section class="section">
<div class="pointer"></div>
<div class="abstract">
</div>
<div class="declaration">
<h4>Declaration</h4>
<div class="language">
<p class="aside-title">Swift</p>
<pre class="highlight swift"><code><span class="kd">open</span> <span class="kd">func</span> <span class="nf">makeIterator</span><span class="p">()</span> <span class="o">-&gt;</span> <span class="kt"><a href="../Classes/RelResultIterator.html">RelResultIterator</a></span></code></pre>
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<p>&copy; 2018 <a class="link" href="" target="_blank" rel="external"></a>. All rights reserved. (Last updated: 2018-06-21)</p>
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