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Postings from September 2018
From: Curt Tilmes
September 17, 2018 02:37
Message ID: CAMv20O-cq1bQ3AKNpjmmhNtL1NN49CnRYpdb-z-HwU-OODxdHQ@mail.gmail.com
Rat is a type (a 'class').
It is also a method on class Numeric. You can take anything Numeric, and
call .Rat() on it to get an equivalent Rat (well, within $epsilon)
You can't, for example, say
my Rat $x = pi;
Since pi is not rational -- it won't fit in that box.
You can, however, ask pi to turn itself into a Rat (or something pretty
close), then it will fit.
my Rat $x = pi.Rat;
On Sun, Sep 16, 2018 at 10:29 PM ToddAndMargo <ToddAndMargo@zoho.com> wrote:
> Hi All,
> What in the world are they trying to say here?
> (Numeric) method Rat
> method Rat(Numeric:D: Real $epsilon = 1.0e-6 --> Rat:D)
> If this Numeric is equivalent to a Real, return a Rat which
> is within $epsilon of that Real's value. Fail
> with X::Numeric::Real otherwise.
> And is this why I can not find a type "Rat"? Because
> it is a method?
> Then why does
> $ p6 'my Real $x; $x = 3.1415; dd $x;'
> Rat $x = 3.1415
> say it is a type "Rat"?
> Yours in confusion,
by Curt Tilmes
by Vadim Belman