From: Christoph <chr_news@...>
Date: 2002-04-02T05:10:37+09:00
Subject: Re: Why isn't Math object-oriented?

"Hal E. Fulton" <hal9000@hypermetrics.com> wrote in
....
> I think I agree. My opinion is that the solution suggested by
> Nobu Nokada should be standard; i.e., by default these
> should be callable either as
>
>     func(num)
>
> or as
>
>     num.func
>
> After all... There's More Than One Way To Do It.

This would only work if the Math module functions are implemented
in terms of Numeric (or one of its Class underlings) instance methods  -
other wise, lets say I want to implement a sin() method for quadric
matrixes I'll have to redefine the ``global'' Math#sin(arg) method  - i.e.

class << Math
    alias old_sin sin
    def sin(x)
        unless x.is_a? SquareMatrix
            old_sin(x)
        else
            ...
         end
     end
end


/Christoph