From: John Griffiths <indiehead@...>
Date: 2009-05-15T00:38:29+09:00
Subject: Re: find previous & next in array

> The safest is probably
> 
> i = a.index('c')
> 
> if i
>   predecessor = i > 0 ? a[i -1] : nil
>   successor = a[i + 1] # safe!
> end
> 
> Or as a variant
> 
> i = a.index('c') and begin
>   predecessor = i > 0 ? a[i -1] : nil
>   successor = a[i + 1] # safe!
> end
> 
> Kind regards
> 
> robert

thanks Robert, i was trying to build up a little function to find the 
prev/next elements in an array, thanks to your help it's sorted; 
couldn't find a solution online. appreciate it all.


John.
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