Is “inline” implicit in C++ member functions defined in class definition

Question

According to the C++ specification, are the following two classes equivalently defined?

class A
{
   void f()
   {
   }
};

class B
{
   inline void f()
   {         


        

Answer 1

The C++ ISO standard says:

A function defined within a class definition is an inline function.

But, this doesn't mean the function will necessarily be inlined: generally nowadays, it appears that the compiler will decide if inlining the function will lead to any benefits.