From: Drew Olson <olsonas@...>
Date: 2007-02-07T00:36:27+09:00
Subject: Re: Parse csv similar file

Gavin Kistner wrote:
> On Feb 6, 7:32 am, "Rebhan, Gilbert" <Gilbert.Reb...@huk-coburg.de>
> wrote:
>> i want to get a collection for every E followed by digits,
>> so with the example above, i want to get =
> 
> lines = DATA.readlines.map{ |line|
>   line.chomp.split( ';' )
> }
> lookup = {}
> lines.each{ |data|
>   key = data.find{ |value| /^E/ =~ value }
>   lookup[ key ] = data
> }
> p lookup[ "E050441" ]
> #=> ["AP850SDS", "INCLIB", "E050441", "AP013", "240107", "0730"]
> __END__
> AP850KP;INCLIB;E023889;AP013;240107;0730
> AP850SD$;INCLIB;E052337;AP013;240107;0730
> AP850SDA;INCLIB;E050441;AP013;240107;0730
> AP850SDI;INCLIB;E023889;AP013;240107;0730
> AP850SDO;INCLIB;E052337;AP013;240107;0730
> AP850SDS;INCLIB;E050441;AP013;240107;0730

I think he wants to append this array with information each time he sees 
the same key, so modify your code like so:

lines = DATA.readlines.map{ |line|
  line.chomp.split( ';' )
}
lookup = {}
lines.each{ |data|
  key = data.find{ |value| /^E/ =~ value }
  lookup[ key ] ||= []
  lookup[ key ] << data
}

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