C++ const question

Question

If I do this:

// In header 
class Foo {
void foo(bar*);
};

// In cpp
void Foo::foo(bar* const pBar) {
//Stuff
}

The compiler does not comp

Answer 1

This is simpler to understand with a variable type other than a pointer. For example, you can have the following function declaration:

void foo( int i );

The definition can look like this:

void foo( const int i ) { ... }

Whether the variable 'i' is const or not on the definition side is an implementation detail. It has no impact for the clients of that function.