From: Adam Prescott <adam@...>
Date: 2011-09-04T05:16:21+09:00
Subject: Re: Beginner needing help - Writing right-angle triangle program

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On Sat, Sep 3, 2011 at 4:36 PM, Gavin Kistner <phrogz@me.com> wrote:

> def right_triangle_sides( circumference )
>  [].tap do |solutions|
>    1.upto(circumference-2) do |a|
>      1.upto(a-1) do |b|
>        c = circumference-a-b
>        if a*a+b*b == c*c
>          solutions.concat( [a,b,c].permutation.to_a )
>        end
>      end
>    end
>  end
> end
>

A very curious use of #tap.

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