Re: equals metamethod and hash functions

[Rici Lake <lua@...>]

On 8-Jun-05, at 10:35 AM, Paul Chiusano wrote:
> You could relax the requirement that the hash be perfect, if you put
> objects with the same hash in a list, ensuring that the list contains
> no duplicates according to equals. Maybe this is the most reasonable
> workaround.
>
> I am just used to python and java, where you can define your own
> hashing and equals methods for each type of object. It seems like it
> would be pretty easy to add a __hash metamethod to Lua... is there any
> interest in implementing this, or some reason not to?

If you can construct hash functions and equality functions for your 
objects, why is it more difficult to stringify? Your __hash metamethod 
and __eq metamethod would have to be perfect, too, in combination.