Differences between POO and MOO
POO was modeled closely after its predecessor and inspriation, MOO. As
such, we've mostly followed the conventions described in the
Programmer's Manual. However, there are some differences (besides the
language itself), which are described here.
Parsing (important!) : in MOO, all functions are
verbs, each of which has a defined grammar. In POO, functions are just
functions, and they are invoked via special "command" structures.
In short, POO's parsing system is completely different from MOO's, and
(we think) a bit more sophisticated.
Directories. POO includes a special type of object,
the Directory, which makes its contents look like
properties. We use this extensively to keep basic objects organized, and
to avoid using object numbers. For example, $pub is a Directory which
contains several others, including one called "rooms"; if "rooms" contains
a particular object called "standard", we can refer to it as
$pub.rooms.standard. (Pretty neat, eh?)
Extra Preposition : in addition to the standard MOO
prepositions, POO includes the equals sign ("=" or " = "). This is handy
for constructions such as @set self.age=42, a little quicker than
s@et self.age to 42.
2/14/97 (Happy Valentine's Day!)
. . . . . . Joe Strout