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<title>Issue 190: min() and max() functions should be std::binary_functions</title>
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<p><em>This page is a snapshot from the LWG issues list, see the <a href="lwg-active.html">Library Active Issues List</a> for more information and the meaning of <a href="lwg-active.html#NAD">NAD</a> status.</em></p>
<h3 id="190"><a href="lwg-closed.html#190">190</a>. min() and max() functions should be std::binary_functions</h3>
<p><b>Section:</b> 26.8.9 <a href="https://wg21.link/alg.min.max">[alg.min.max]</a> <b>Status:</b> <a href="lwg-active.html#NAD">NAD</a>
 <b>Submitter:</b> Mark Rintoul <b>Opened:</b> 1999-08-26 <b>Last modified:</b> 2016-01-28</p>
<p><b>Priority: </b>Not Prioritized
</p>
<p><b>View other</b> <a href="lwg-index-open.html#alg.min.max">active issues</a> in [alg.min.max].</p>
<p><b>View all other</b> <a href="lwg-index.html#alg.min.max">issues</a> in [alg.min.max].</p>
<p><b>View all issues with</b> <a href="lwg-status.html#NAD">NAD</a> status.</p>
<p><b>Discussion:</b></p>
<p>Both std::min and std::max are defined as template functions.  This
is very different than the definition of std::plus (and similar
structs) which are defined as function objects which inherit
std::binary_function.<br/>
<br/>
        This lack of inheritance leaves std::min and std::max somewhat useless in standard library algorithms which require
a function object that inherits std::binary_function.</p>

<p><i>[
post Bellevue:  Alisdair requested to re-Open.
]</i></p>


<p><i>[
2009-07 Frankfurt
]</i></p>


<blockquote>
<p>
C++0x has lambdas to address this problem now.
</p>
<p>
Moved to NAD.
</p>
</blockquote>



<p><b>Rationale:</b></p>
<p>Although perhaps an unfortunate design decision, the omission is not a defect
in the current standard.&nbsp; A future standard may wish to consider additional
function objects.</p>




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