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docs: fixed requirements in value_or()

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This commit is contained in:
Andrzej Krzemienski
2014-06-16 14:23:34 +02:00
parent 0a2a8957fa
commit 9edf2ddac1
7 changed files with 60 additions and 29 deletions
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13
doc/html/boost_optional/tutorial/type_requirements.html
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@ -60,10 +60,9 @@
<span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="identifier">p</span> <span class="special">=</span> <span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;();</span>
</pre>
<p>
If <code class="computeroutput"><span class="identifier">T</span></code> is <code class="computeroutput"><span class="identifier">CopyConstructible</span></code>,
<code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span></code> is
also <code class="computeroutput"><span class="identifier">CopyConstructible</span></code> and
can be easily initialized from an lvalue of type <code class="computeroutput"><span class="identifier">T</span></code>:
If <code class="computeroutput"><span class="identifier">T</span></code> is <a href="../../../../../utility/CopyConstructible.html" target="_top"><code class="computeroutput"><span class="identifier">CopyConstructible</span></code></a>, <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span></code> is
also <a href="../../../../../utility/CopyConstructible.html" target="_top"><code class="computeroutput"><span class="identifier">CopyConstructible</span></code></a>
and can be easily initialized from an lvalue of type <code class="computeroutput"><span class="identifier">T</span></code>:
</p>
<pre class="programlisting"><span class="identifier">T</span> <span class="identifier">v</span> <span class="special">=</span> <span class="identifier">make_T</span><span class="special">();</span>
<span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="identifier">o</span> <span class="special">=</span> <span class="identifier">v</span><span class="special">;</span>
@ -85,10 +84,8 @@
can be constructed and assigned from an rvalue of type <code class="computeroutput"><span class="identifier">T</span></code>.
</p>
<p>
Similarly, if <code class="computeroutput"><span class="identifier">T</span></code> is <code class="computeroutput"><span class="identifier">Copyable</span></code> (both <code class="computeroutput"><span class="identifier">CopyConstructible</span></code>
and <code class="computeroutput"><span class="identifier">CopyAssignable</span></code>) then
<code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span></code> is
also <code class="computeroutput"><span class="identifier">Copyable</span></code> and additionally
Similarly, if <code class="computeroutput"><span class="identifier">T</span></code> is <code class="computeroutput"><span class="identifier">Copyable</span></code> (both <a href="../../../../../utility/CopyConstructible.html" target="_top"><code class="computeroutput"><span class="identifier">CopyConstructible</span></code></a> and <code class="computeroutput"><span class="identifier">CopyAssignable</span></code>) then <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span></code>
is also <code class="computeroutput"><span class="identifier">Copyable</span></code> and additionally
can be constructed and assigned from an lvalue of type <code class="computeroutput"><span class="identifier">T</span></code>.
</p>
<p>