Slow performance compared to C++, ideas?

[deadalnix]

On Tuesday, 4 June 2013 at 04:13:57 UTC, Manu wrote:
> And I argue the subjective opinion, that code can't possibly be 
> correct if
> the author never considered how the API may be used outside his 
> design
> premise, and can never test it.

This very sentence show that you miss the point of OOP and Liskov 
substitution principle.

To make the argument cleared, let's consider a lib with a class 
A. The whole lib uses A and must now know about subclasses of A. 
Not even A itself.

As a consequence, A don't need to be tested for all kind of 
future possible override.

If I, as a programmer, create a class B that extends A, it is my 
responsibility to ensure that my class really behave as an A. As 
a matter of fact, the lib don't know anything about B, and that 
is the whole point of OOP.