diff options
Diffstat (limited to 'doc/html/boost_typeerasure/basic.html')
| -rw-r--r-- | doc/html/boost_typeerasure/basic.html | 21 |
1 files changed, 7 insertions, 14 deletions
diff --git a/doc/html/boost_typeerasure/basic.html b/doc/html/boost_typeerasure/basic.html index f73b5c92c8..129886b9be 100644 --- a/doc/html/boost_typeerasure/basic.html +++ b/doc/html/boost_typeerasure/basic.html @@ -92,7 +92,7 @@ </p> <p> </p> -<pre class="programlisting"><span class="identifier">BOOST_TYPE_ERASURE_MEMBER</span><span class="special">((</span><span class="identifier">has_push_back</span><span class="special">),</span> <span class="identifier">push_back</span><span class="special">,</span> <span class="number">1</span><span class="special">)</span> +<pre class="programlisting"><span class="identifier">BOOST_TYPE_ERASURE_MEMBER</span><span class="special">(</span><span class="identifier">push_back</span><span class="special">)</span> <span class="keyword">void</span> <span class="identifier">append_many</span><span class="special">(</span><span class="identifier">any</span><span class="special"><</span><span class="identifier">has_push_back</span><span class="special"><</span><span class="keyword">void</span><span class="special">(</span><span class="keyword">int</span><span class="special">)>,</span> <span class="identifier">_self</span><span class="special">&></span> <span class="identifier">container</span><span class="special">)</span> <span class="special">{</span> <span class="keyword">for</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="identifier">i</span> <span class="special"><</span> <span class="number">10</span><span class="special">;</span> <span class="special">++</span><span class="identifier">i</span><span class="special">)</span> @@ -104,11 +104,8 @@ <p> We use the macro <code class="computeroutput"><a class="link" href="../BOOST_TYPE_ERASURE_MEMBER.html" title="Macro BOOST_TYPE_ERASURE_MEMBER">BOOST_TYPE_ERASURE_MEMBER</a></code> to define a concept called <code class="computeroutput"><span class="identifier">has_push_back</span></code>. - The second parameter is the name of the member function and the last macro - parameter indicates the number of arguments which is <code class="computeroutput"><span class="number">1</span></code> - since <code class="computeroutput"><span class="identifier">push_back</span></code> is unary. When - we use <code class="computeroutput"><span class="identifier">has_push_back</span></code>, we have - to tell it the signature of the function, <code class="computeroutput"><span class="keyword">void</span><span class="special">(</span><span class="keyword">int</span><span class="special">)</span></code>. + When we use <code class="computeroutput"><span class="identifier">has_push_back</span></code>, + we have to tell it the signature of the function, <code class="computeroutput"><span class="keyword">void</span><span class="special">(</span><span class="keyword">int</span><span class="special">)</span></code>. This means that the type we store in the any has to have a member that looks like: </p> @@ -135,16 +132,12 @@ stores a reference to an external object instead of allocating its own object. </p> <p> - There's actually another <code class="computeroutput"><a class="link" href="../boost/type_erasure/placeholder.html" title="Struct placeholder">placeholder</a></code> - here. The second parameter of <code class="computeroutput"><span class="identifier">has_push_back</span></code> - defaults to <code class="computeroutput"><span class="identifier">_self</span></code>. If we wanted - to define a const member function, we would have to change it to <code class="computeroutput"><span class="keyword">const</span> <span class="identifier">_self</span></code>, - as shown below. + Member functions can be const. </p> <p> </p> -<pre class="programlisting"><span class="identifier">BOOST_TYPE_ERASURE_MEMBER</span><span class="special">((</span><span class="identifier">has_empty</span><span class="special">),</span> <span class="identifier">empty</span><span class="special">,</span> <span class="number">0</span><span class="special">)</span> -<span class="keyword">bool</span> <span class="identifier">is_empty</span><span class="special">(</span><span class="identifier">any</span><span class="special"><</span><span class="identifier">has_empty</span><span class="special"><</span><span class="keyword">bool</span><span class="special">(),</span> <span class="keyword">const</span> <span class="identifier">_self</span><span class="special">>,</span> <span class="keyword">const</span> <span class="identifier">_self</span><span class="special">&></span> <span class="identifier">x</span><span class="special">)</span> <span class="special">{</span> +<pre class="programlisting"><span class="identifier">BOOST_TYPE_ERASURE_MEMBER</span><span class="special">(</span><span class="identifier">empty</span><span class="special">)</span> +<span class="keyword">bool</span> <span class="identifier">is_empty</span><span class="special">(</span><span class="identifier">any</span><span class="special"><</span><span class="identifier">has_empty</span><span class="special"><</span><span class="keyword">bool</span><span class="special">()</span> <span class="keyword">const</span><span class="special">>,</span> <span class="keyword">const</span> <span class="identifier">_self</span><span class="special">&></span> <span class="identifier">x</span><span class="special">)</span> <span class="special">{</span> <span class="keyword">return</span> <span class="identifier">x</span><span class="special">.</span><span class="identifier">empty</span><span class="special">();</span> <span class="special">}</span> </pre> @@ -155,7 +148,7 @@ </p> <p> </p> -<pre class="programlisting"><span class="identifier">BOOST_TYPE_ERASURE_FREE</span><span class="special">((</span><span class="identifier">has_getline</span><span class="special">),</span> <span class="identifier">getline</span><span class="special">,</span> <span class="number">2</span><span class="special">)</span> +<pre class="programlisting"><span class="identifier">BOOST_TYPE_ERASURE_FREE</span><span class="special">(</span><span class="identifier">getline</span><span class="special">)</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">></span> <span class="identifier">read_lines</span><span class="special">(</span><span class="identifier">any</span><span class="special"><</span><span class="identifier">has_getline</span><span class="special"><</span><span class="keyword">bool</span><span class="special">(</span><span class="identifier">_self</span><span class="special">&,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">&)>,</span> <span class="identifier">_self</span><span class="special">&></span> <span class="identifier">stream</span><span class="special">)</span> <span class="special">{</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">></span> <span class="identifier">result</span><span class="special">;</span> |