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(This article was first published on <strong><a href="http://perfdynamics.blogspot.com/2016/05/pdq-70-dev-is-underway.html"> The Pith of Performance</a></strong>, and kindly contributed to <a rel="nofollow" href="http://www.r-bloggers.com/">R-bloggers)</a> </div>
<p>The primary goal for this release is to make <a target="_blank" href="http://www.perfdynamics.com/Tools/PDQ.html">PDQ</a> acceptable for uploading to <a target="_blank" href="https://cran.r-project.org/">CRAN</a>. This is a non-trivial exercise because there is some legacy C code in the PDQ library that needs to be reorganized while, at the same time, keeping it consistent for programmatically porting to other languages besides R—chiefly Perl (for the <a target="_blank" href="http://www.perfdynamics.com/iBook/ppa_new.html">book</a>) and Python.
<div><a target="_blank" href="https://3.bp.blogspot.com/-8ZB-EvHyVh4/Vy7MqfW7GxI/AAAAAAAAB78/3iVMTMrclDk5YRY7IHvd6BHtWZA5jmGVwCLcB/s1600/Screen%2BShot%2B2016-05-07%2Bat%2B10.19.42%2BPM.png"><img src="https://3.bp.blogspot.com/-8ZB-EvHyVh4/Vy7MqfW7GxI/AAAAAAAAB78/3iVMTMrclDk5YRY7IHvd6BHtWZA5jmGVwCLcB/s400/Screen%2BShot%2B2016-05-07%2Bat%2B10.19.42%2BPM.png" border="0"></a></div>
<p>To get there, the following steps have been identified:
<ol type="A">
<li>
<h3>High Priority</h3>
<ol>
<li>Migrate from <a target="_blank" href="https://sourceforge.net/projects/pdq-qnm-pkg/">SourceForge</a> to <a target="_blank" href="https://github.com/">GitHub</a>.
<li> Change the return type for these functions from int to void:
<ul>
<li> PDQ_CreateOpen()
<li> PDQ_CreateClosed()
<li> PDQ_CreateNode()
<li> PDQ_CreateMultiNode() </ul>
<p> Using the returned int as a counter was deprecated in version 6.1.1.
<li>Convert <a target="_blank" href="http://www.perfdynamics.com/Tools/PDQ-R.html">PDQ-R</a> to <a target="_blank" href="http://www.rcpp.org/">Rcpp</a> interface.
<li>Clean out the Examples directory and other contributed code directories leaving only Examples that actually use the PDQ C library.
<li>Add unit tests for PDQ C library, Perl, Python, and R.
<li>Get interface accepted on <a target="_blank" href="https://cran.r-project.org/">CRAN</a>
<p>In addition, the ability to solve multi-class multi-server queueing nodes will be introduced.
<li>
<h3>Low Priority</h3>
<ol>
<li>Get interface accepted on <a target="_blank" href="http://www.cpan.org/">CPAN</a> and <a target="_blank" href="https://pypi.python.org/pypi">PyPI</a>.
<li>Convert to build system from makefiles to <a target="_blank" href="https://en.wikipedia.org/wiki/CMake">Cmake</a>. </ol>

<p>Stay tuned!</p>
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<div>To <strong>leave a comment</strong> for the author, please follow the link and comment on their blog: <strong><a href="http://perfdynamics.blogspot.com/2016/05/pdq-70-dev-is-underway.html"> The Pith of Performance</a></strong>.</div>
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