value_or() requires that U is convertible to T

Due to Vladimir Batov.

doc/html/boost_optional/reference/detailed_semantics.html

@@ -1408,7 +1408,8 @@
 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
 <li class="listitem">
             <span class="bold"><strong>Requires:</strong></span> <code class="computeroutput"><span class="identifier">T</span></code>
-            is CopyConstructible.
+            is <a href="../../../../../utility/CopyConstructible.html" target="_top"><code class="computeroutput"><span class="identifier">CopyConstructible</span></code></a> and <code class="computeroutput"><span class="identifier">U</span> <span class="special">&amp;&amp;</span></code>
+            is convertible to <code class="computeroutput"><span class="identifier">T</span></code>.
           </li>
 <li class="listitem">
             <span class="bold"><strong>Returns:</strong></span> First overload: <code class="computeroutput"><span class="keyword">bool</span><span class="special">(*</span><span class="keyword">this</span><span class="special">)</span> <span class="special">?</span> <span class="special">**</span><span class="keyword">this</span>

doc/html/boost_optional/tutorial/design_overview/the_interface.html

@@ -98,10 +98,11 @@
         </p>
 <p>
           Such a <span class="emphasis"><em>de facto</em></span> idiom for referring to optional objects
-          can be formalized in the form of a concept: the <a href="../../../../../../utility/OptionalPointee.html" target="_top">OptionalPointee</a>
-          concept. This concept captures the syntactic usage of operators <code class="computeroutput"><span class="special">*</span></code>, <code class="computeroutput"><span class="special">-&gt;</span></code>
-          and contextual conversion to <code class="computeroutput"><span class="keyword">bool</span></code>
-          to convey the notion of optionality.
+          can be formalized in the form of a concept: the <a href="../../../../../../utility/OptionalPointee.html" target="_top"><code class="computeroutput"><span class="identifier">OptionalPointee</span></code></a> concept. This
+          concept captures the syntactic usage of operators <code class="computeroutput"><span class="special">*</span></code>,
+          <code class="computeroutput"><span class="special">-&gt;</span></code> and contextual conversion
+          to <code class="computeroutput"><span class="keyword">bool</span></code> to convey the notion
+          of optionality.
         </p>
 <p>
           However, pointers are good to <span class="underline">refer</span>
@@ -127,7 +128,7 @@
           this semantics, so are inappropriate for the initialization and transport
           of optional values, yet are quite convenient for handling the access to
           the possible undefined value because of the idiomatic aid present in the
-          <a href="../../../../../../utility/OptionalPointee.html" target="_top">OptionalPointee</a>
+          <a href="../../../../../../utility/OptionalPointee.html" target="_top"><code class="computeroutput"><span class="identifier">OptionalPointee</span></code></a>
           concept incarnated by pointers.
         </p>
 <h6>

doc/html/boost_optional/tutorial/in_place_factories.html

@@ -31,9 +31,9 @@
         One of the typical problems with wrappers and containers is that their interfaces
         usually provide an operation to initialize or assign the contained object
         as a copy of some other object. This not only requires the underlying type
-        to be <a href="../../../../../utility/CopyConstructible.html" target="_top">Copy Constructible</a>,
-        but also requires the existence of a fully constructed object, often temporary,
-        just to follow the copy from:
+        to be <a href="../../../../../utility/CopyConstructible.html" target="_top"><code class="computeroutput"><span class="identifier">CopyConstructible</span></code></a>, but also requires
+        the existence of a fully constructed object, often temporary, just to follow
+        the copy from:
       </p>
 <pre class="programlisting"><span class="keyword">struct</span> <span class="identifier">X</span>
 <span class="special">{</span>

doc/html/index.html

@@ -133,7 +133,7 @@
 </div>
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
-<td align="left"><p><small>Last revised: June 13, 2014 at 21:36:29 GMT</small></p></td>
+<td align="left"><p><small>Last revised: June 14, 2014 at 20:46:55 GMT</small></p></td>
 <td align="right"><div class="copyright-footer"></div></td>
 </tr></table>
 <hr>