mentat/docs/apis/rust/mentat_query_projector/struct.RelResult.html

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<p class='location'>Struct RelResult</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#fields">Fields</a><div class="sidebar-links"><a href="#structfield.width">width</a><a href="#structfield.values">values</a></div><a class="sidebar-title" href="#methods">Methods</a><div class="sidebar-links"><a href="#method.empty">empty</a><a href="#method.is_empty">is_empty</a><a href="#method.row_count">row_count</a><a href="#method.rows">rows</a><a href="#method.row">row</a></div><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Clone">Clone</a><a href="#impl-Debug">Debug</a><a href="#impl-PartialEq">PartialEq</a><a href="#impl-Eq">Eq</a><a href="#impl-From%3CVec%3CVec%3CTypedValue%3E%3E%3E">From&lt;Vec&lt;Vec&lt;TypedValue&gt;&gt;&gt;</a><a href="#impl-IntoIterator">IntoIterator</a></div><a class="sidebar-title" href="#synthetic-implementations">Auto Trait Implementations</a><div class="sidebar-links"><a href="#impl-Send">Send</a><a href="#impl-Sync">Sync</a></div></div><p class='location'><a href='index.html'>mentat_query_projector</a></p><script>window.sidebarCurrent = {name: 'RelResult', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
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<section id='main' class="content"><h1 class='fqn'><span class='in-band'>Struct <a href='index.html'>mentat_query_projector</a>::<wbr><a class="struct" href=''>RelResult</a></span><span class='out-of-band'><span id='render-detail'>
<a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
[<span class='inner'>&#x2212;</span>]
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</span><a class='srclink' href='../src/mentat_query_projector/relresult.rs.html#35-38' title='goto source code'>[src]</a></span></h1><div class="docblock type-decl"><pre class='rust struct'>pub struct RelResult&lt;T&gt; {
pub width: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>,
pub values: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a>&lt;T&gt;,
}</pre></div><div class='docblock'><p>The result you get from a 'rel' query, like:</p>
<pre><code class="language-edn">[:find ?person ?name
:where [?person :person/name ?name]]
</code></pre>
<p>There are three ways to get data out of a <code>RelResult</code>:</p>
<ul>
<li>By iterating over rows as slices. Use <code>result.rows()</code>. This is efficient and is
recommended in two cases:
<ol>
<li>If you don't need to take ownership of the resulting values (e.g., you're comparing
or making a modified clone).</li>
<li>When the data you're retrieving is cheap to clone. All scalar values are relatively
cheap: they're either small values or <code>Rc</code>.</li>
</ol>
</li>
<li>By direct reference to a row by index, using <code>result.row(i)</code>. This also returns
a reference.</li>
<li>By consuming the results using <code>into_iter</code>. This allocates short-lived vectors,
but gives you ownership of the enclosed <code>TypedValue</code>s.</li>
</ul>
</div><h2 id='fields' class='fields small-section-header'>
Fields<a href='#fields' class='anchor'></a></h2><span id="structfield.width" class="structfield small-section-header">
<a href="#structfield.width" class="anchor field"></a>
<span id="width.v" class='invisible'>
<code>width: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></code>
</span></span><span id="structfield.values" class="structfield small-section-header">
<a href="#structfield.values" class="anchor field"></a>
<span id="values.v" class='invisible'>
<code>values: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a>&lt;T&gt;</code>
</span></span>
<h2 id='methods' class='small-section-header'>
Methods<a href='#methods' class='anchor'></a>
</h2>
<h3 id='impl' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl&lt;T&gt; <a class="struct" href="../mentat_query_projector/struct.RelResult.html" title="struct mentat_query_projector::RelResult">RelResult</a>&lt;T&gt;</code><a href='#impl' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_projector/relresult.rs.html#42-72' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.empty' class="method"><span id='empty.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.empty' class='fnname'>empty</a>(width: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="struct" href="../mentat_query_projector/struct.RelResult.html" title="struct mentat_query_projector::RelResult">RelResult</a>&lt;T&gt;</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_projector/relresult.rs.html#43-48' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><h4 id='method.is_empty' class="method"><span id='is_empty.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.is_empty' class='fnname'>is_empty</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_projector/relresult.rs.html#50-52' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><h4 id='method.row_count' class="method"><span id='row_count.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.row_count' class='fnname'>row_count</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_projector/relresult.rs.html#54-56' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><h4 id='method.rows' class="method"><span id='rows.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.rows' class='fnname'>rows</a>(&amp;self) -&gt; <a class="struct" href="https://doc.rust-lang.org/nightly/core/slice/struct.Chunks.html" title="struct core::slice::Chunks">Chunks</a>&lt;T&gt;</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_projector/relresult.rs.html#58-61' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><h4 id='method.row' class="method"><span id='row.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.row' class='fnname'>row</a>(&amp;self, index: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&amp;[T]</a>&gt;</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_projector/relresult.rs.html#63-71' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4></div>
<h2 id='implementations' class='small-section-header'>
Trait Implementations<a href='#implementations' class='anchor'></a>
</h2>
<div id='implementations-list'>
<h3 id='impl-Clone' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl&lt;T:&nbsp;<a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="struct" href="../mentat_query_projector/struct.RelResult.html" title="struct mentat_query_projector::RelResult">RelResult</a>&lt;T&gt;</code><a href='#impl-Clone' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_projector/relresult.rs.html#34' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.clone' class="method"><span id='clone.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone' class='fnname'>clone</a>(&amp;self) -&gt; <a class="struct" href="../mentat_query_projector/struct.RelResult.html" title="struct mentat_query_projector::RelResult">RelResult</a>&lt;T&gt;</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_projector/relresult.rs.html#34' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Returns a copy of the value. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone">Read more</a></p>
</div><h4 id='method.clone_from' class="method"><span id='clone_from.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from' class='fnname'>clone_from</a>(&amp;mut self, source: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>Self)</code></span></td><td><span class='out-of-band'><div class='ghost'></div><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/clone.rs.html#117-119' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from">Read more</a></p>
</div></div><h3 id='impl-Debug' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl&lt;T:&nbsp;<a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a>&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="../mentat_query_projector/struct.RelResult.html" title="struct mentat_query_projector::RelResult">RelResult</a>&lt;T&gt;</code><a href='#impl-Debug' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_projector/relresult.rs.html#34' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.fmt' class="method"><span id='fmt.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&amp;self, __arg_0: &amp;mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_projector/relresult.rs.html#34' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></p>
</div></div><h3 id='impl-PartialEq' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl&lt;T:&nbsp;<a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a>&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a> for <a class="struct" href="../mentat_query_projector/struct.RelResult.html" title="struct mentat_query_projector::RelResult">RelResult</a>&lt;T&gt;</code><a href='#impl-PartialEq' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_projector/relresult.rs.html#34' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.eq' class="method"><span id='eq.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#tymethod.eq' class='fnname'>eq</a>(&amp;self, __arg_0: &amp;<a class="struct" href="../mentat_query_projector/struct.RelResult.html" title="struct mentat_query_projector::RelResult">RelResult</a>&lt;T&gt;) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_projector/relresult.rs.html#34' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>This method tests for <code>self</code> and <code>other</code> values to be equal, and is used by <code>==</code>. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#tymethod.eq">Read more</a></p>
</div><h4 id='method.ne' class="method"><span id='ne.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#method.ne' class='fnname'>ne</a>(&amp;self, __arg_0: &amp;<a class="struct" href="../mentat_query_projector/struct.RelResult.html" title="struct mentat_query_projector::RelResult">RelResult</a>&lt;T&gt;) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_projector/relresult.rs.html#34' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>This method tests for <code>!=</code>.</p>
</div></div><h3 id='impl-Eq' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl&lt;T:&nbsp;<a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Eq.html" title="trait core::cmp::Eq">Eq</a>&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Eq.html" title="trait core::cmp::Eq">Eq</a> for <a class="struct" href="../mentat_query_projector/struct.RelResult.html" title="struct mentat_query_projector::RelResult">RelResult</a>&lt;T&gt;</code><a href='#impl-Eq' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_projector/relresult.rs.html#34' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'></div><h3 id='impl-From%3CVec%3CVec%3CTypedValue%3E%3E%3E' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a>&lt;<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a>&lt;<a class="enum" href="../mentat_core/types/enum.TypedValue.html" title="enum mentat_core::types::TypedValue">TypedValue</a>&gt;&gt;&gt; for <a class="struct" href="../mentat_query_projector/struct.RelResult.html" title="struct mentat_query_projector::RelResult">RelResult</a>&lt;<a class="enum" href="../mentat_core/types/enum.Binding.html" title="enum mentat_core::types::Binding">Binding</a>&gt;</code><a href='#impl-From%3CVec%3CVec%3CTypedValue%3E%3E%3E' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_projector/relresult.rs.html#110-122' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.from' class="method"><span id='from.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from' class='fnname'>from</a>(src: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a>&lt;<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a>&lt;<a class="enum" href="../mentat_core/types/enum.TypedValue.html" title="enum mentat_core::types::TypedValue">TypedValue</a>&gt;&gt;) -&gt; Self</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_projector/relresult.rs.html#111-121' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Performs the conversion.</p>
</div></div><h3 id='impl-IntoIterator' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/trait.IntoIterator.html" title="trait core::iter::traits::IntoIterator">IntoIterator</a> for <a class="struct" href="../mentat_query_projector/struct.RelResult.html" title="struct mentat_query_projector::RelResult">RelResult</a>&lt;T&gt;</code><a href='#impl-IntoIterator' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_projector/relresult.rs.html#143-153' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='associatedtype.Item' class="type"><span id='Item.t' class='invisible'><code>type <a href='https://doc.rust-lang.org/nightly/core/iter/traits/trait.IntoIterator.html#associatedtype.Item' class="type">Item</a> = <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a>&lt;T&gt;</code></span></h4>
<div class='docblock'><p>The type of the elements being iterated over.</p>
</div><h4 id='associatedtype.IntoIter' class="type"><span id='IntoIter.t' class='invisible'><code>type <a href='https://doc.rust-lang.org/nightly/core/iter/traits/trait.IntoIterator.html#associatedtype.IntoIter' class="type">IntoIter</a> = SubvecIntoIterator&lt;T&gt;</code></span></h4>
<div class='docblock'><p>Which kind of iterator are we turning this into?</p>
</div><h4 id='method.into_iter' class="method"><span id='into_iter.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='https://doc.rust-lang.org/nightly/core/iter/traits/trait.IntoIterator.html#tymethod.into_iter' class='fnname'>into_iter</a>(self) -&gt; Self::<a class="type" href="https://doc.rust-lang.org/nightly/core/iter/traits/trait.IntoIterator.html#associatedtype.IntoIter" title="type core::iter::traits::IntoIterator::IntoIter">IntoIter</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/mentat_query_projector/relresult.rs.html#147-152' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Creates an iterator from a value. <a href="https://doc.rust-lang.org/nightly/core/iter/traits/trait.IntoIterator.html#tymethod.into_iter">Read more</a></p>
</div></div></div>
<h2 id='synthetic-implementations' class='small-section-header'>
Auto Trait Implementations<a href='#synthetic-implementations' class='anchor'></a>
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<h3 id='impl-Send' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="../mentat_query_projector/struct.RelResult.html" title="struct mentat_query_projector::RelResult">RelResult</a>&lt;T&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>,&nbsp;</span></code><a href='#impl-Send' class='anchor'></a></span></td><td><span class='out-of-band'></span></td></tr></tbody></table></h3><div class='impl-items'></div><h3 id='impl-Sync' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="../mentat_query_projector/struct.RelResult.html" title="struct mentat_query_projector::RelResult">RelResult</a>&lt;T&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>,&nbsp;</span></code><a href='#impl-Sync' class='anchor'></a></span></td><td><span class='out-of-band'></span></td></tr></tbody></table></h3><div class='impl-items'></div></div></section>
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