From: Boby Selamet Hartono <vecciora@...>
Date: 2009-05-14T12:48:03+09:00
Subject: Re: find previous & next in array

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2009/5/14 John Griffiths <indiehead@gmail.com>

> hi, anyone know how to do this?
>
> basically i've got an array of items
>
> a = ['a','b','c','d']
>
> now given i can find the position of say 'c' using .index('c'), how do i
> get the positions of the ones previous & next to it.
>
> a recursive routine would probably do it, but looking for something more
> flash
>
> any ideas?
> --
> Posted via http://www.ruby-forum.com/.
>
>
a[a.index(:c)-1] or a[a.index(:c)+1]?

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