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    <p>Actually, I don't think the boost libraries are going to become legacy.</p> <p>Yes, you should be able to use <code>std::type_traits</code>, <code>regex</code>, <code>shared_ptr</code>, <code>unique_ptr</code>, <code>tuple&lt;&gt;</code>, <code>std::tie</code>, <code>std::begin</code> instead of Boost Typetraits/Utility, Boost Smartpointer, Boost Tuple, Boost Range libraries, but there should in practice be no real need to 'switch' unless you are moving more of your code to c++11.</p> <p>Also, in my experience, the <code>std</code> versions of most of these are somewhat less featureful. E.g. AFAICT the standard does <em>not</em> have</p> <ul> <li>Perl5 regular expressions</li> <li>call_traits</li> <li>Certain regex interface members (such as <code>bool boost::basic_regex&lt;&gt;::empty()</code>) and othe interface differences <ul> <li>this bites more since the Boost interface is exactly matched with Boost Xpressive</li> <li>and it plays much more nicely with Boost String Algorithms Obviously, the latter don't have <em>standard</em> counterparts (yet?)</li> </ul></li> <li>Many things relating to TMP (Boost Fusion)</li> <li><p>Lazy, expression template-based lambdas; they have inevitable benefits in that they <em>can</em> be polymorphic <em>today</em>, as opposed to C++11. Therefore they can often be more succinct:</p> <pre><code> std::vector&lt;int&gt; v = {1,2,-9,3}; for (auto i : v | filtered(_arg1 &gt;=0)) std::cout &lt;&lt; i &lt;&lt; "\n"; // or: boost::for_each(v, std::cout &lt;&lt; _arg1); </code></pre> <p>Most definitely, this still has some appeal over C++11 lambdas (with trailing return types, explicit capturing and declared parameters).</p></li> </ul> <p>Also, there is a BIG role for Boost, precisely in facilitating path-wise migration from C++03 to C++11 and integrating C++11 and C++03 codebases. I'm particularly thinking of</p> <ul> <li>Boost Auto (BOOST_AUTO)</li> <li>Boost Utility (<code>boost::result_of&lt;&gt;</code> and related)</li> <li>Boost Foreach (BOOST_FOREACH)</li> <li>Don't forget: Boost Move - which makes it possible to write classes with move semantics with a syntax that will compile equally well on C++03 compilers with Boost 1_48+ and C++11 compilers.</li> </ul> <p>Just my $0.02</p>
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