Purity

[Simen kjaeraas]

Bruno Medeiros <brunodomedeiros+spam at com.gmail> wrote:

> In this code sample if the optimization is applied on the second call to  
> func, it would cause different code with be executed: the else clause  
> instead of the then clause. Obviously this is not acceptable for an  
> optimization, even if such code would be rare in practice.

Ah yes, I see now. I could argue that 'is' is cheating. :p

I believe actually, that pure is only said to promise that the returned
values should be such that func(args) == func(args), not accounting for
overloaded operators.

-- 
Simen