1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Function template empty</title> 5<link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../../../index.html" title="Chapter 1. Boost.Histogram"> 8<link rel="up" href="../../../histogram/reference.html#header.boost.histogram.algorithm.empty_hpp" title="Header <boost/histogram/algorithm/empty.hpp>"> 9<link rel="prev" href="../accumulators/weighted_sum.html" title="Class template weighted_sum"> 10<link rel="next" href="project_idm45503931171616.html" title="Function template project"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr> 14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../boost.png"></td> 15<td align="center"><a href="../../../../../../../index.html">Home</a></td> 16<td align="center"><a href="../../../../../../libraries.htm">Libraries</a></td> 17<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 19<td align="center"><a href="../../../../../../../more/index.htm">More</a></td> 20</tr></table> 21<hr> 22<div class="spirit-nav"> 23<a accesskey="p" href="../accumulators/weighted_sum.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../../histogram/reference.html#header.boost.histogram.algorithm.empty_hpp"><img src="../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="project_idm45503931171616.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="refentry"> 26<a name="boost.histogram.algorithm.empty"></a><div class="titlepage"></div> 27<div class="refnamediv"> 28<h2><span class="refentrytitle">Function template empty</span></h2> 29<p>boost::histogram::algorithm::empty — Check to see if all histogram cells are empty. </p> 30</div> 31<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> 32<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="../../../histogram/reference.html#header.boost.histogram.algorithm.empty_hpp" title="Header <boost/histogram/algorithm/empty.hpp>">boost/histogram/algorithm/empty.hpp</a>> 33 34</span> 35<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> A<span class="special">,</span> <span class="keyword">typename</span> S<span class="special">></span> 36 <span class="keyword">auto</span> <span class="identifier">empty</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="../histogram.html" title="Class template histogram">histogram</a><span class="special"><</span> <span class="identifier">A</span><span class="special">,</span> <span class="identifier">S</span> <span class="special">></span> <span class="special">&</span> h<span class="special">,</span> <span class="identifier">coverage</span> cov<span class="special">)</span><span class="special">;</span></pre></div> 37<div class="refsect1"> 38<a name="idm45113195436192"></a><h2>Description</h2> 39<p>Use coverage to include or exclude the underflow/overflow bins.</p> 40<p>This algorithm has O(N) complexity, where N is the number of cells.</p> 41<p>Returns true if all cells are empty, and false otherwise. </p> 42</div> 43</div> 44<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 45<td align="left"></td> 46<td align="right"><div class="copyright-footer">Copyright © 2016-2019 Hans 47 Dembinski<p> 48 Distributed under the Boost Software License, Version 1.0. (See accompanying 49 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 50 </p> 51</div></td> 52</tr></table> 53<hr> 54<div class="spirit-nav"> 55<a accesskey="p" href="../accumulators/weighted_sum.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../../histogram/reference.html#header.boost.histogram.algorithm.empty_hpp"><img src="../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="project_idm45503931171616.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> 56</div> 57</body> 58</html> 59
