From: Robert Klemme <shortcutter@...>
Date: 2007-03-31T06:00:06+09:00
Subject: Re: newbie, hash or 2dArry

On 30.03.2007 18:54, Zac Elston wrote:
> I'm lost or just tired from guessing.
> 
> I need to make an hash I can call by hostname as the key and some random
> amount of data after that as the values.  now a hash works great for 1
> to 1 maps (h[serverX] ==> result) but I need
> h[serverX][query|result|time]
> 
> so how would I write a hash that would give me access to
> 
> in:
> h[host_to_query]["query"]] = @query
> h[host_to_query]["result"]] = queryhost(host_to_query,@query)

This is syntactically incorrect since oyu have one closing bracket too much.

> out:
> for h.each |host| puts h[[host]["result"]]

Here's an alternative:

Info = Struct.new :query, :result, :time
h = Hash.new {|h,k| h[k] = Info.new}
h[serverX].query = @query
h[serverX].result = queryhost(host_to_query,@query)
h.each {|ho,inf| puts inf.result}

Of course you can use Arrays instead of Info but the code with Info is 
more readable and less error prone.

Kind regards

	robert