finding out number of records in a table??

["Leo Razoumov" <slonik.az@...>]

Hi Everyone,
Lua Length Operator ('#' or lua_objlen) when applied to tables only
returns the size of table's array portion and says nothing about its
hash portion (records).

For example,

> t={a=1,b=2}
> =#t
0
>

How can one easily find out the number of records stored in a table?
I think that there should be a convenient idiom for such a common task.

Best Regards,
--Leo--