[MUD-Dev] Data Storage and MFC Questions

[david.l.smith at home.com]

Ben Chambers [bjchambers at phoenixdsl.com]:

>  What is the best way of storing the data for a MUD.  I know that
>  the most common is probably arrays or hash tables.  Hash Tables,
>  from what I understand are arrays that have a faster lookup because
>  of the hash function.  Which one do you use, and why?  Also, has
>  anyone ever tried using MFC to write a MUD server?  For example, I
>  have found the MFC Map, which is basically a wrapping of a hash
>  table, as having a good chance for usage in data storage.  You
>  write a subroutine as part of the class describing the hash
>  function for a specific type of data.  Then you just add data by
>  index and value.  And you can reference by index, or delete by
>  index.  It is a very easy way of using a hash table.  MFC also has
>  prospects in other aspects of MUD Design.  It allows for the
>  simplification of many processes, including dynamic object
>  creation.

Hmm,

MFC CMap <almost identically equal to> std::map<T >

I've found that the dynamic object creation pattern in MFC is really
one of the *only* reasons to prefer it over straight c++ and the std
library. However, if you look at MFC's rules, there's a lot of
trade-off to not rolling your own implementation for that kind of
thing. First, MFC's *not* using rtti, rather it's using an
object-hierarchy enforced type info system. Rtti's part of the
language (and portable), plus if you start a good object hierarchy you
can get the nifty parts of MFC (dynamic object creation, good
exception and memory handling, rtti, and serialization) using
platform/compiler portable code.

As for the object hierarchy itself that MFC gives you, I've found
everything I need in a combination of the Qt library and the ACE
library (Qt for my windowing, ACE for communications and threading --
especially threading).

Just MHO,
-Dave
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