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<title>libsigc++ 2.0: sigc::adaptor_base Struct Reference</title>
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<h1>sigc::adaptor_base Struct Reference<br>
<small>
[<a class="el" href="group__adaptors.html">Adaptors</a>]</small>
</h1>A hint to the compiler.
<a href="#_details">More...</a>
<p>
Inheritance diagram for sigc::adaptor_base:<p><center><img src="structsigc_1_1adaptor__base__inherit__graph.png" border="0" usemap="#sigc_1_1adaptor__base__inherit__map" alt="Inheritance graph"></center>
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<hr><a name="_details"></a><h2>Detailed Description</h2>
A hint to the compiler.
<p>
Functors which have all methods based on templates should publicly inherit from this hint and define a nested template class <code><a class="el" href="structsigc_1_1deduce__result__type.html">deduce_result_type</a></code> that can be used to deduce the methods' return types.<p>
<a class="el" href="structsigc_1_1adaptor__base.html">adaptor_base</a> inherits from the <a class="el" href="structsigc_1_1functor__base.html">functor_base</a> hint so derived types should also have a result_type defined.<p>
Adaptors don't inherit from this type directly. They use use <a class="el" href="structsigc_1_1adapts.html">sigc::adapts</a> as a base type instead. sigc::adaptors wraps arbitrary functor types as well as function pointers and class methods.
<p>
<hr>The documentation for this struct was generated from the following file:<ul>
<li><a class="el" href="deduce__result__type_8h.html">deduce_result_type.h</a></ul>
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