c++ - passing a derived class object to constructor of template class - Stack Overflow

The issue is that you can't convert a pointer-to-method from pointer-to-method-of-derived-type to pointer-to-method-of-base-type, because pointer-to-methods are contravariant with the object type.

Consider:

Base

#write #indeed #erasure #derived::dosomethingelse #instance))

https://stackoverflow.com/questions/12216381/passing-a-derived-class-object-to-constructor-of-template-class https://stackoverflow.com/questions/12216381/passing-a-derived-class-object-to-constructor-of-template-class

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