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<img src="" class="logo" alt=""><h1>Infer an R vector prototype</h1>
<small class="dont-index">Source: <a href="https://github.com/apache/arrow-nanoarrow/blob/main/r/R/infer-ptype.R" class="external-link"><code>R/infer-ptype.R</code></a></small>
<div class="d-none name"><code>infer_nanoarrow_ptype.Rd</code></div>
</div>
<div class="ref-description section level2">
<p>Resolves the default <code>to</code> value to use in <code><a href="convert_array.html">convert_array()</a></code> and
<code><a href="convert_array_stream.html">convert_array_stream()</a></code>. The default conversions are:</p>
</div>
<div class="section level2">
<h2 id="ref-usage">Usage<a class="anchor" aria-label="anchor" href="#ref-usage"></a></h2>
<div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">infer_nanoarrow_ptype</span><span class="op">(</span><span class="va">x</span><span class="op">)</span></span></code></pre></div>
</div>
<div class="section level2">
<h2 id="arguments">Arguments<a class="anchor" aria-label="anchor" href="#arguments"></a></h2>
<dl><dt>x</dt>
<dd><p>A <a href="as_nanoarrow_schema.html">nanoarrow_schema</a>,
<a href="as_nanoarrow_array.html">nanoarrow_array</a>, or
<a href="as_nanoarrow_array_stream.html">nanoarrow_array_stream</a>.</p></dd>
</dl></div>
<div class="section level2">
<h2 id="value">Value<a class="anchor" aria-label="anchor" href="#value"></a></h2>
<p>An R vector of zero size describing the target into which
the array should be materialized.</p>
</div>
<div class="section level2">
<h2 id="details">Details<a class="anchor" aria-label="anchor" href="#details"></a></h2>
<ul><li><p>null to <code><a href="https://vctrs.r-lib.org/reference/unspecified.html" class="external-link">vctrs::unspecified()</a></code></p></li>
<li><p>boolean to <code><a href="https://rdrr.io/r/base/logical.html" class="external-link">logical()</a></code></p></li>
<li><p>int8, uint8, int16, uint16, and int13 to <code><a href="https://rdrr.io/r/base/integer.html" class="external-link">integer()</a></code></p></li>
<li><p>uint32, int64, uint64, float, and double to <code><a href="https://rdrr.io/r/base/double.html" class="external-link">double()</a></code></p></li>
<li><p>string and large string to <code><a href="https://rdrr.io/r/base/character.html" class="external-link">character()</a></code></p></li>
<li><p>struct to <code><a href="https://rdrr.io/r/base/data.frame.html" class="external-link">data.frame()</a></code></p></li>
<li><p>binary and large binary to <code><a href="https://blob.tidyverse.org/reference/blob.html" class="external-link">blob::blob()</a></code></p></li>
<li><p>list, large_list, and fixed_size_list to <code><a href="https://vctrs.r-lib.org/reference/list_of.html" class="external-link">vctrs::list_of()</a></code></p></li>
<li><p>time32 and time64 to <code><a href="https://hms.tidyverse.org/reference/hms.html" class="external-link">hms::hms()</a></code></p></li>
<li><p>duration to <code><a href="https://rdrr.io/r/base/difftime.html" class="external-link">difftime()</a></code></p></li>
<li><p>date32 to <code><a href="https://rdrr.io/r/base/as.Date.html" class="external-link">as.Date()</a></code></p></li>
<li><p>timestamp to <code><a href="https://rdrr.io/r/base/as.POSIXlt.html" class="external-link">as.POSIXct()</a></code></p></li>
</ul><p>Additional conversions are possible by specifying an explicit value for
<code>to</code>. For details of each conversion, see <code><a href="convert_array.html">convert_array()</a></code>.</p>
</div>
<div class="section level2">
<h2 id="ref-examples">Examples<a class="anchor" aria-label="anchor" href="#ref-examples"></a></h2>
<div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span><span class="fu">infer_nanoarrow_ptype</span><span class="op">(</span><span class="fu"><a href="as_nanoarrow_array.html">as_nanoarrow_array</a></span><span class="op">(</span><span class="fl">1</span><span class="op">:</span><span class="fl">10</span><span class="op">)</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> integer(0)</span>
<span class="r-in"><span></span></span>
</code></pre></div>
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