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PO<unresolved overloaded function type> when trying to pass an aggregated object's method to its class method
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  1. PO<unresolved overloaded function type> when trying to pass an aggregated object's method to its class method
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    copied!<p>I have some problem compiling my code. I have the following structure:</p> <pre><code>#include &lt;cstdlib&gt; using namespace std; typedef double (*FuncType)(int ); class AnotherClass { public: AnotherClass() {}; double funcAnother(int i) {return i*1.0;} }; class MyClass { public: MyClass(AnotherClass &amp; obj) { obj_ = &amp;obj;}; void compute(FuncType foo); void run(); protected: AnotherClass * obj_; /*pointer to obj. of another class */ }; void MyClass::compute(FuncType foo) { int a=1; double b; b= foo(a); } void MyClass::run() { compute(obj_-&gt;funcAnother); } /* * */ int main(int argc, char** argv) { AnotherClass a; MyClass b(a); b.run(); return 0; } </code></pre> <p>When I try to compile it, it gives:</p> <pre><code>main.cpp:39:31: error: no matching function for call to ‘MyClass::compute(&lt;unresolved overloaded function type&gt;)’ main.cpp:30:6: note: candidate is: void MyClass::compute(double (*)(int)) </code></pre> <p>What's wrong here?</p> <p>p/s/ <code>AnotherClass * obj_;</code> should stay like that because I write some function to the big library and can't change it.</p> <p>-------------- working version by Benjamin -------</p> <pre><code>#include &lt;cstdlib&gt; using namespace std; class AnotherClass { public: AnotherClass() {}; double funcAnother(int i) {return i*1.0;} }; struct Foo { /*constructor*/ Foo(AnotherClass &amp; a) : a_(a) {}; double operator()(int i) const { return a_.funcAnother(i); } AnotherClass &amp; a_; }; class MyClass { public: MyClass(AnotherClass &amp; obj) { obj_ = &amp;obj;}; template&lt;typename FuncType&gt; void compute(FuncType foo); void run(); protected: AnotherClass * obj_; /*pointer to obj. of another class */ }; template&lt;typename FuncType&gt; void MyClass::compute(FuncType foo) { int a=1; double b; b= foo(a); } void MyClass::run() { Foo f(*obj_); compute(f); } /* * */ int main(int argc, char** argv) { AnotherClass a; MyClass b(a); b.run(); return 0; } </code></pre> <p>Thank you everybody very much for the help!</p>
 

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