Folks, I am only beginning to unwrap the christmas present but I immediately fell in love with the perl6 arithmetic system. Not is it rich but it is also fast.
% perl6 > 340282366920938463463374607431768211297.is-prime True > 340282366920938460843936948965011886881.is-prime False And type conversions between numbers are smooth and seamless. I couldn’t help loving Rat … except for one thing. % perl6 > pi 3.14159265358979 > pi.Rat 3.141593 > pi.Rat.nude (355 113) That’s so 5th century! https://en.wikipedia.org/wiki/Zu_Chongzhi And of course, > pi.Rat == pi False https://perl6advent.wordpress.com/2009/12/14/day-14-going-to-the-rats/ However, we can be more precise by simply giving 0 to $epsilon. > pi.Rat(0).nude (245850922 78256779) > pi.Rat(0) == pi True > e.Rat(0) == e True > log(2).Rat(0) == log(2) True This I feel more natural. http://doc.perl6.org/routine/Rat#role_Real says the default $epsilon is 1e-6. Why so large? Why not zero? Dan the Perl6 Newbie
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