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First of all, sorry for the unacceptable long delay; I was still putting
life back on tracks after a long holiday away from anything that
resembles a computer. :)

> No reason, except that it never came up. What would you use a tonumber
> metamethod for?

Nothing special: I was just curious. It would be interesting, however,
to implement something meaningful for tonumber depending on the class:
complex numbers could have an absolute value, sets could have a
cardinality, matrices, a determinant, and so on.

> Also, please note that the tostring metamethod is not actually a core
> metamethod, but rather a feature of the tostring function (and print
> uses tostring).

Thanks for the reminder. :)


A mathematician is a device for turning coffee into theorems.
        -- P. Erdos 

Luis Carvalho
Applied Math PhD Student - Brown University
PGP Key: E820854A <>

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