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<div class="titlepage"><div><div><h4 class="title">
<a name="phoenix.modules.operator.supported_operators"></a><a class="link" href="supported_operators.html" title="Supported operators">Supported
operators</a>
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<a name="phoenix.modules.operator.supported_operators.unary_operators"></a><h6>
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<a class="link" href="supported_operators.html#phoenix.modules.operator.supported_operators.unary_operators">Unary
operators</a>
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<pre class="programlisting"><span class="identifier">prefix</span><span class="special">:</span> <span class="special">~,</span> <span class="special">!,</span> <span class="special">-,</span> <span class="special">+,</span> <span class="special">++,</span> <span class="special">--,</span> <span class="special">&amp;</span> <span class="special">(</span><span class="identifier">reference</span><span class="special">),</span> <span class="special">*</span> <span class="special">(</span><span class="identifier">dereference</span><span class="special">)</span>
<span class="identifier">postfix</span><span class="special">:</span> <span class="special">++,</span> <span class="special">--</span>
</pre>
<a name="phoenix.modules.operator.supported_operators.binary_operators"></a><h6>
<a name="id856727"></a>
<a class="link" href="supported_operators.html#phoenix.modules.operator.supported_operators.binary_operators">Binary
operators</a>
</h6>
<pre class="programlisting"><span class="special">=,</span> <span class="special">[],</span> <span class="special">+=,</span> <span class="special">-=,</span> <span class="special">*=,</span> <span class="special">/=,</span> <span class="special">%=,</span> <span class="special">&amp;=,</span> <span class="special">|=,</span> <span class="special">^=,</span> <span class="special">&lt;&lt;=,</span> <span class="special">&gt;&gt;=</span>
<span class="special">+,</span> <span class="special">-,</span> <span class="special">*,</span> <span class="special">/,</span> <span class="special">%,</span> <span class="special">&amp;,</span> <span class="special">|,</span> <span class="special">^,</span> <span class="special">&lt;&lt;,</span> <span class="special">&gt;&gt;</span>
<span class="special">==,</span> <span class="special">!=,</span> <span class="special">&lt;,</span> <span class="special">&gt;,</span> <span class="special">&lt;=,</span> <span class="special">&gt;=</span>
<span class="special">&amp;&amp;,</span> <span class="special">||,</span> <span class="special">-&gt;*</span>
</pre>
<a name="phoenix.modules.operator.supported_operators.ternary_operator"></a><h6>
<a name="id856928"></a>
<a class="link" href="supported_operators.html#phoenix.modules.operator.supported_operators.ternary_operator">Ternary
operator</a>
</h6>
<pre class="programlisting"><span class="identifier">if_else</span><span class="special">(</span><span class="identifier">c</span><span class="special">,</span> <span class="identifier">a</span><span class="special">,</span> <span class="identifier">b</span><span class="special">)</span>
</pre>
<p>
The ternary operator deserves special mention. Since C++ does not allow
us to overload the conditional expression: <code class="computeroutput"><span class="identifier">c</span>
<span class="special">?</span> <span class="identifier">a</span>
<span class="special">:</span> <span class="identifier">b</span></code>,
the if_else pseudo function is provided for this purpose. The behavior
is identical, albeit in a lazy manner.
</p>
<a name="phoenix.modules.operator.supported_operators.member_pointer_operator"></a><h6>
<a name="id857031"></a>
<a class="link" href="supported_operators.html#phoenix.modules.operator.supported_operators.member_pointer_operator">Member
pointer operator</a>
</h6>
<pre class="programlisting"><span class="identifier">a</span><span class="special">-&gt;*</span><span class="identifier">member_object_pointer</span>
<span class="identifier">a</span><span class="special">-&gt;*</span><span class="identifier">member_function_pointer</span>
</pre>
<p>
The left hand side of the member pointer operator must be an actor returning
a pointer type. The right hand side of the member pointer operator may
be either a pointer to member object or pointer to member function.
</p>
<p>
If the right hand side is a member object pointer, the result is an actor
which, when evaluated, returns a reference to that member. For example:
</p>
<pre class="programlisting"><span class="keyword">struct</span> <span class="identifier">A</span>
<span class="special">{</span>
<span class="keyword">int</span> <span class="identifier">member</span><span class="special">;</span>
<span class="special">};</span>
<span class="identifier">A</span><span class="special">*</span> <span class="identifier">a</span> <span class="special">=</span> <span class="keyword">new</span> <span class="identifier">A</span><span class="special">;</span>
<span class="special">...</span>
<span class="special">(</span><span class="identifier">arg1</span><span class="special">-&gt;*&amp;</span><span class="identifier">A</span><span class="special">::</span><span class="identifier">member</span><span class="special">)(</span><span class="identifier">a</span><span class="special">);</span> <span class="comment">// returns member a-&gt;member
</span></pre>
<p>
If the right hand side is a member function pointer, the result is an actor
which, when invoked, calls the specified member function. For example:
</p>
<pre class="programlisting"><span class="keyword">struct</span> <span class="identifier">A</span>
<span class="special">{</span>
<span class="keyword">int</span> <span class="identifier">func</span><span class="special">(</span><span class="keyword">int</span><span class="special">);</span>
<span class="special">};</span>
<span class="identifier">A</span><span class="special">*</span> <span class="identifier">a</span> <span class="special">=</span> <span class="keyword">new</span> <span class="identifier">A</span><span class="special">;</span>
<span class="keyword">int</span> <span class="identifier">i</span> <span class="special">=</span> <span class="number">0</span><span class="special">;</span>
<span class="special">(</span><span class="identifier">arg1</span><span class="special">-&gt;*&amp;</span><span class="identifier">A</span><span class="special">::</span><span class="identifier">func</span><span class="special">)(</span><span class="identifier">arg2</span><span class="special">)(</span><span class="identifier">a</span><span class="special">,</span> <span class="identifier">i</span><span class="special">);</span> <span class="comment">// returns a-&gt;func(i)
</span></pre>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2002-2005, 2010 Joel de Guzman, Dan Marsden, Thomas Heller<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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