From: Chris Blair <cblair1986@...>
Date: 2006-11-16T16:47:45+09:00
Subject: Re: Splitting an array into quads and putting them back together again.

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On 11/12/06, Martin DeMello <martindemello@gmail.com> wrote:
>
> require 'enumerator'
>
> class Array
>   def |(other)
>     self.zip(other).map {|a,b| a+b}
>   end
>
>   def /(other)
>     self + other
>   end
> end
>
> a1 = [[1,2],[5,6]]
> b1 = [[3,4],[7,8]]
> a2 = [[9,10],[13,14]]
> b2 = [[11,12],[15,16]]
>
> p (a1|b1)/(a2|b2)
>
> class Array
>   def shape(cols)
>     enum_slice(cols).map {|i| i.inject {|j, k| j|k}}.inject {|a, i| a/i}
>   end
> end
>
> p [a1, b1, a2, b2].shape(2)
>
>
Thanks! I don't quite understand the code, right now, but it does work
exactly how I wanted it. Sorry for the delay in responding, I haven't had
access to the internet for a little while.

Thanks again!

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