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Diffstat (limited to 'doc/html/boost/type_erasure/placeholder.html')
| -rw-r--r-- | doc/html/boost/type_erasure/placeholder.html | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/doc/html/boost/type_erasure/placeholder.html b/doc/html/boost/type_erasure/placeholder.html index 2f7f48a304..8349d6bc48 100644 --- a/doc/html/boost/type_erasure/placeholder.html +++ b/doc/html/boost/type_erasure/placeholder.html @@ -36,7 +36,7 @@ <span class="keyword">struct</span> <a class="link" href="placeholder.html" title="Struct placeholder">placeholder</a> <span class="special">{</span> <span class="special">}</span><span class="special">;</span></pre></div> <div class="refsect1"> -<a name="idp655739008"></a><h2>Description</h2> +<a name="idp568075536"></a><h2>Description</h2> <p>Placeholders are used heavily throughout the library. Every placeholder must derive from <a class="link" href="placeholder.html" title="Struct placeholder">placeholder</a>. The library provides a number of placeholders, out of the box, but you are welcome to define your own, if you want more descriptive names. The placeholder <a class="link" href="_self.html" title="Struct _self">_self</a> is special in that it is used as the default wherever possible.</p> <p>What exactly is a placeholder? Placeholders act as a substitute for template parameters in concepts. The library automatically replaces all the placeholders used in a concept with the actual types involved when it stores an object in an <a class="link" href="any.html" title="Class template any">any</a>.</p> <p>For example, in the following,</p> |