<p><div><div><div><div data-show-faces="false" data-height="21" data-width="100" data-layout="button_count" data-send="true" data-href="https://www.r-bloggers.com/prrd-0-0-2-many-improvements/"></div></div><div></div></div><div></div></div>
<div>
(This article was first published on <strong><a href="http://dirk.eddelbuettel.com/blog/2018/01/26#prrd_0.0.2"> Thinking inside the box </a></strong>, and kindly contributed to <a rel="nofollow" href="https://www.r-bloggers.com/">R-bloggers)</a> </div>
<p>The <a rel="nofollow" href="http://dirk.eddelbuettel.com/code/prrd.html" target="_blank">prrd</a> package was <a rel="nofollow" href="http://dirk.eddelbuettel.com/blog/2018/01/07#prrd_0.0.1" target="_blank">introduced recently</a>, and made it to <a rel="nofollow" href="https://cran.r-project.org/" target="_blank">CRAN</a> shortly thereafter. The idea of <a rel="nofollow" href="http://dirk.eddelbuettel.com/code/prrd.html" target="_blank">prrd</a> is simple, and described in some more detail on <a rel="nofollow" href="http://dirk.eddelbuettel.com/code/prrd.html" target="_blank">its webpage</a> and its <a rel="nofollow" href="https://github.com/eddelbuettel/prrd" target="_blank">GitHub repo</a>. Reverse dependency checks are an important part of package development and is easily done in a (serial) loop. But these checks are also generally <em>embarassingly parallel</em> as there is no or little interdependency between them (besides maybe shared build depedencies). See the following screenshot (running six parallel workers, arranged in split <a rel="nofollow" href="http://byobu.co/" target="_blank">byobu</a> session).</p>
<div>
<img src="https://i1.wp.com/github.com/eddelbuettel/prrd/raw/master/local/screenshot_prrd_rcpparmadillo.png?w=456&ssl=1" data-recalc-dims="1">
</div>
<p>This note announce the second, and much improved, release. The package now runs on all operating systems supported by R and no longer has external system requirements. Several functions were improved, two new helper functions were added in a so-far still preliminary form, and everything is more robust now.</p>
<p>The release is summarised in the NEWS entry:</p>
<blockquote>
<h4>Changes in prrd version 0.0.2 (2018-01-24)</h4>
<ul>
<li>
<p>The package no longer require <code>wget</code>.</p>
</li>
<li>
<p>Enhanced sanity checker function.</p>
</li>
<li>
<p>Expanded and improved dequeue function.</p>
</li>
<li>
<p>No longer use <code>$HOME</code> in <code>xvfb-run-safe</code> (<a rel="nofollow" href="https://github.com/eddelbuettel/prrd/issues/2" target="_blank">#2</a>).</p>
</li>
<li>
<p>The use of <code>xvfb-run</code> use is now conditional on the OS (<a rel="nofollow" href="https://github.com/eddelbuettel/prrd/issues/3" target="_blank">#3</a>).</p>
</li>
<li>
<p>The set of available packages is no longer constrained to CRAN, but could be via the local setup script (<a rel="nofollow" href="https://github.com/eddelbuettel/prrd/issues/4" target="_blank">#4</a>).</p>
</li>
<li>
<p>The <code>dequeue()</code> function now uses <code>system2()</code>.</p>
</li>
<li>
<p>The <code>enqueue()</code> functions checks if no reverse dependencies are found and stops (<a rel="nofollow" href="https://github.com/eddelbuettel/prrd/issues/6" target="_blank">#6</a>).</p>
</li>
<li>
<p>The <code>enqueue()</code> functions checks for repository information being set (<a rel="nofollow" href="https://github.com/eddelbuettel/prrd/issues/5" target="_blank">#5</a>).</p>
</li>
</ul>
</blockquote>
<p><a rel="nofollow" href="http://dirk.eddelbuettel.com/cranberries/index.html" target="_blank">CRANberries</a> provides the usual summary of changes to the <a rel="nofollow" href="http://dirk.eddelbuettel.com/cranberries/2018/01/25#prrd_0.0.2" target="_blank">previous version</a>. See the aforementioned <a rel="nofollow" href="http://dirk.eddelbuettel.com/code/prrd.html" target="_blank">webpage</a> and its <a rel="nofollow" href="https://github.com/eddelbuettel/prrd" target="_blank">repo</a> for details. For more questions or comments use the <a rel="nofollow" href="https://github.com/eddelbuettel/prrd/issues" target="_blank">issue tracker</a> off the <a rel="nofollow" href="https://github.com/eddelbuettel/prrd" target="_blank">GitHub repo</a>.</p>
<p>
This post by <a rel="nofollow" href="http://dirk.eddelbuettel.com/" target="_blank">Dirk Eddelbuettel</a> originated on his <a rel="nofollow" href="http://dirk.eddelbuettel.com/blog/" target="_blank">Thinking inside the box</a> blog. Please report excessive re-aggregation in third-party for-profit settings.</p>
<p>
	<p>
<div>
<div>To <strong>leave a comment</strong> for the author, please follow the link and comment on their blog: <strong><a href="http://dirk.eddelbuettel.com/blog/2018/01/26#prrd_0.0.2"> Thinking inside the box </a></strong>.</div>
<hr>
<a rel="nofollow" href="https://www.r-bloggers.com/">R-bloggers.com</a> offers <strong><a rel="nofollow" href="https://feedburner.google.com/fb/a/mailverify?uri=RBloggers">daily e-mail updates</a></strong> about <a rel="nofollow" href="https://www.r-project.org/" title="The R Project for Statistical Computing">R</a> news and <a rel="nofollow" href="https://www.r-bloggers.com/search/tutorial" title="R tutorials">tutorials</a> on topics such as: <a rel="nofollow" href="https://www.r-bloggers.com/search/data%20science" title="Data science">Data science</a>, <a rel="nofollow" href="https://www.r-bloggers.com/search/Big%20Data" title="Big Data">Big Data, <a rel="nofollow" href="https://www.r-users.com/" title="R jobs">R jobs</a>, visualization (<a rel="nofollow" href="https://www.r-bloggers.com/search/ggplot2" title="ggplot and ggplot2 tutorials">ggplot2</a>, <a rel="nofollow" href="https://www.r-bloggers.com/search/boxplot" title="Boxplots using lattice and ggplot2 tutorials">Boxplots</a>, <a rel="nofollow" href="https://www.r-bloggers.com/search/map" title="Maps and gis">maps</a>, <a rel="nofollow" href="https://www.r-bloggers.com/search/animation" title="Animation in R">animation</a>), programming (<a rel="nofollow" href="https://www.r-bloggers.com/search/RStudio" title="RStudio IDE for R">RStudio</a>, <a rel="nofollow" href="https://www.r-bloggers.com/search/sweave" title="Sweave and literate programming">Sweave</a>, <a rel="nofollow" href="https://www.r-bloggers.com/search/LaTeX" title="LaTeX in R">LaTeX</a>, <a rel="nofollow" href="https://www.r-bloggers.com/search/SQL" title="SQL and databases">SQL</a>, <a rel="nofollow" href="https://www.r-bloggers.com/search/eclipse" title="Eclipse IDE for R">Eclipse</a>, <a rel="nofollow" href="https://www.r-bloggers.com/search/git" title="git and github, Version Control System">git</a>, <a rel="nofollow" href="https://www.r-bloggers.com/search/hadoop" title="Large data in R using Hadoop">hadoop</a>, <a rel="nofollow" href="https://www.r-bloggers.com/search/Web+Scraping" title="Web Scraping of google, facebook, yahoo, twitter and more using R">Web Scraping</a>) statistics (<a rel="nofollow" href="https://www.r-bloggers.com/search/regression" title="Regressions and ANOVA analysis tutorials">regression</a>, <a rel="nofollow" href="https://www.r-bloggers.com/search/PCA" title="principal component analysis tutorial">PCA</a>, <a rel="nofollow" href="https://www.r-bloggers.com/search/time+series" title="Time series">time series</a>, <a rel="nofollow" href="https://www.r-bloggers.com/search/trading" title="finance trading">trading</a>) and more...
<img width="1" alt="" src="http://feeds.feedburner.com/~r/RBloggers/~4/5cBrZlVNHLY" height="1"></a></div>