Problem with overloading/inheritance/virtual methods

[Simas Toleikis]

Two classes:

class BaseClass
{
public:
virtual void Foo() = 0; // pure virtual here
virtual void Foo(int x);
};

class DerivedClass: public BaseClass
{
public:
void Foo();
};

When calling Foo(int) from DerivedClass pointer compiler cant see this
overload. Where is the problem?

 

[Victor Bazarov]

Two classes:

class BaseClass
{
public:
virtual void Foo() = 0; // pure virtual here
virtual void Foo(int x);
};

class DerivedClass: public BaseClass
{
public:
void Foo();
};

When calling Foo(int) from DerivedClass pointer compiler cant see this
overload. Where is the problem?

The "problem" is called "name hiding". It can be "solved" with the help
of 'using' declaration in DerivedClass:

class DerivedClass: public BaseClass
{
public:
using BaseClass::Foo; // brings all 'BaseClass' Foo in this scope
void Foo();
};


V