On Tue, Sep 15, 2009 at 02:35:46AM +0200, Uriel wrote: [snip]
> > > > Some examples: > > > > 1. I designed a software to automate testing of the boxes that we > > build. The main language used is Python (I guess it's hard to avoid OO > > when using python). Basically the design is such that I have a test > > case class that is used when instantiating different test cases > > (attributes include: name, status, tester, etc.). How would you > > approach this in a non-OO way? > > It is perfectly possible to write Python code without doing OO, as > long as you stay away from the awful 'frameworks' out there that force > you all kinds of insane crap like mixins down your throat. > > For example I just wrote a tracker for App Engine in python without > even using a single class: http://repo.cat-v.org/atrack/ Other people > had writen trackers before, but they used OO and they were *much* > bigger, much more complicated, much slower, and much harder to hack > on. > > Note that using classes in python is OK, as long as you just use them > as structs, and *never* *ever* *under any circumstance* use > inheritance. And there is the main problem because some APIs pretty > much force you to use inheritance, but usually that can be isolated > with some care, but it is a big pain. > > (Also 'objects' in python act much as dictionaries if you ignore the > inheritance stuff, so dictionaries and classes can be used somewhat > interchangeably). > I've been looking at the source of atrack. It is good reference. Thanks for sharing. > > > > > 2. A colleague of mine needed to design a packet generation engines for > > our box. He used OO concepts in CC by using techniques such as VTABLE, > > defines for methods, classes, etc: > > > > /** > > * Macros for declaring classes > > */ > > #define CLASS(CX, SX)\ > > typedef struct CX *CX;\ > > struct CX {struct SX super; > > #define IMPLEMENTS(IX) struct IX *IX > > #define VTABLE(CX, SX) };\ > > extern struct CX##Class __##CX;\ > > typedef struct CX##Class *CX##Class;\ > > struct CX##Class {struct SX##Class super; > > #define METHODS }; > > #define END_CLASS > > > > So then, he can instantiate multiple different engines depending on > > processor load, etc. > > Your friend should beaten up semi-unconscious with metal bars, thrown > into a big hole in the ground, and then have the hole filed with > liquid feces until he drowns. > I'll think about it :). > Peace > > uriel >
