From: Gennady Bystritsky <Gennady.Bystritsky@...>
Date: 2006-05-11T15:18:55+09:00
Subject: Re: A more elegant way to do this?

Array() will do the job:

Array(nil) => []
Array([1,2,3]) => [1, 2, 3]
Array(1) => [1]

In your case:

Array(conf['hosts'][hostname]['groups']).each { ... }

Gennady.

> -----Original Message-----
> From: Tim Uckun [mailto:timuckun@gmail.com] 
> Sent: Wednesday, May 10, 2006 21:32
> To: ruby-talk ML
> Subject: A more elegant way to do this?
> 
> Can anybody suggest a more elegant and rubyish way to do this?
> 
> I am reading a YAML file and then trying to iterate over arrays and
> hashes that may or may not be there.
> 
>  unless conf['hosts'][hostname]['groups'].nil?
>    conf['hosts'][hostname]['groups'].each { |group|
>      unless conf['crontables'][group].nil?
>          conf['crontables'][group].each { | tab_item|
>            tab_entries << tab_item
>          }
>       end #Unless
>     }
>   end #unless
>