From tony at metracom.com  Thu Sep 21 01:09:46 2017
From: tony at metracom.com (Tony)
Date: Thu, 21 Sep 2017 01:09:46 -0700
Subject: [Oc-pm] OC PM Perl meeting September 25th @ 7pm
Message-ID: <8391760d-7697-6c29-97b4-39afb137abcf@metracom.com>


OC Perl Mongers,  this months Perl meeting will be on Monday the 25th @ 
7pm.  We could use a volunteer speaker.

The September programming challenge is posted on the website. You get 10 
points for every programming language you can solve it with.

Here's the list: https://dzone.com/articles/big-list-256-programming

See you next week,

http://oc.pm.org

Tony

From bobmath11 at icloud.com  Tue Sep 26 11:25:25 2017
From: bobmath11 at icloud.com (Bob Mathews)
Date: Tue, 26 Sep 2017 11:25:25 -0700
Subject: [Oc-pm] perl6
Message-ID: <ED937899-B313-4F1C-AF00-1B00D0B2E4C9@icloud.com>

Perl6 Deep Dive p58:
> Thus, any Rat number is a rational value equal to the division N/D. The integer numerator part is a value that can be arbitrarily long. The denominator part is a 64-bit integer.


FOR THE LOVE OF GOD, WHY? This ?optimization? of limiting the denominator to 64 bits makes the Rat type useless for my purposes. It silently converts to a double-precision float if the denominator overflows.

-bob

From bobmath11 at icloud.com  Wed Sep 27 09:15:56 2017
From: bobmath11 at icloud.com (Bob Mathews)
Date: Wed, 27 Sep 2017 09:15:56 -0700
Subject: [Oc-pm] perl6
In-Reply-To: <ED937899-B313-4F1C-AF00-1B00D0B2E4C9@icloud.com>
References: <ED937899-B313-4F1C-AF00-1B00D0B2E4C9@icloud.com>
Message-ID: <DDEE090F-6F82-45F2-8E56-0B5795C7F3CC@icloud.com>

> On Sep 26, 2017, at 11:25 AM, Bob Mathews <bobmath11 at icloud.com> wrote:
> Perl6 Deep Dive p58:
>> Thus, any Rat number is a rational value equal to the division N/D. The integer numerator part is a value that can be arbitrarily long. The denominator part is a 64-bit integer.

So it turns out that:
a) The book is incomplete. FatRat doesn?t have this behavior, but it?s not mentioned. I thought we were diving deep here.
b) The book is wrong. It is possible to create a Rat with a denominator larger than 64 bits, though it ?usually? enforces that limit.
c) Perl6 is buggy. No surprise here.
> say 1.111111111111111111111
1.11111111111111111604544
 -bob
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