[Python-Dev] conceptual clarity

[Antoine Pitrou]

Le Thu, 17 Sep 2009 14:30:28 +1200, Greg Ewing a écrit :
> 
> 3) an Address with an attached Network
> 
> An Address could be constructed in three ways:
> 
>    Address(ip_number)
> 
>    Address(ip_number, network = <Network instance>)
> 
>    Address(ip_number, mask = <mask>)
>      # constructs and attaches a suitably-masked Network instance
> 
> We could also have some_network[n] return an Address referring back to
> the network object it was obtained from.

It seems you are uselessly conflating two perfectly distinct concepts: 
Address and Network. You also haven't addresses the issue of comparing 
together (and hashing) two addresses with the same IP but pointing to a 
different network. No answer to this issue seems satisfactory and 
obviously right.

As it is, -1 from me. Either we only keep two concepts (Address and 
Network), or if we introduce a third one (AddressWithMask, whatever) for 
added practicality; but we shouldn't blur the line between the two former 
canonical concepts under the pretext that a platypus-like Address might 
be helpful in some particular situations.

Regards

Antoine.