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<section id="architectural-overview">
<span id="id1"></span><h1>Architectural Overview<a class="headerlink" href="#architectural-overview" title="Permalink to this heading">#</a></h1>
<p>A general overview of Apache Arrow project can be found on the
<a class="reference external" href="https://arrow.apache.org/">front page</a> and in the
<a class="reference external" href="https://arrow.apache.org/overview/">Apache Arrow Overview</a>.
You can also have a look at the
<a class="reference external" href="https://arrow.apache.org/faq/">Frequently Asked Questions</a>.</p>
<p>For an Architectural Overview of Arrow’s libraries please
refer to:</p>
<ul class="simple">
<li><p><a class="reference internal" href="../../python/getting_involved.html#py-arch-overview"><span class="std std-ref">PyArrow Architecture</span></a></p></li>
<li><p>R package Architecture can be found on this page.</p></li>
</ul>
<section id="r-package-architectural-overview">
<h2>R package Architectural Overview<a class="headerlink" href="#r-package-architectural-overview" title="Permalink to this heading">#</a></h2>
<figure class="align-default">
<img alt="Main parts of R package architecture: dplyr-*, dplyr-funcs*, tools, tests and src/." src="../../_images/R_architectural_overview.png" />
</figure>
<ul class="simple">
<li><p>The <code class="docutils literal notranslate"><span class="pre">r/R/dplyr-*</span></code> files define the verbs used in a regular
dplyr syntax on Arrow objects.</p></li>
<li><p>The <code class="docutils literal notranslate"><span class="pre">r/R/dplyr-funcs*</span></code> files define bindings to Arrow C++
functions that can be used with already defined dplyr verbs.</p></li>
<li><p>All the C++ code connected to the R package lives in <code class="docutils literal notranslate"><span class="pre">arrow/r/src</span></code>.
It also includes C++ code which connects libarrow (the Arrow C++
library) and the R code in package.</p></li>
<li><p>If the libarrow source package is bundled with R package using
<code class="docutils literal notranslate"><span class="pre">make</span> <span class="pre">sync-cpp</span></code> command then it will be included in the
<code class="docutils literal notranslate"><span class="pre">r/tools/cpp</span></code> folder.</p></li>
</ul>
<p><strong>Additionally</strong></p>
<ul class="simple">
<li><p>The <code class="docutils literal notranslate"><span class="pre">r/man</span></code> directory includes generated R documentation that
shouldn’t be updated directly but in the corresponding <code class="docutils literal notranslate"><span class="pre">.R</span></code> file.</p></li>
<li><p>The vignettes are
<a class="reference external" href="https://r-pkgs.org/vignettes.html#introduction">“a long-form guide to the package”</a>
and can be found in <code class="docutils literal notranslate"><span class="pre">r/vignettes</span></code>.</p></li>
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