From: Morton Goldberg <m_goldberg@...>
Date: 2007-07-28T08:22:53+09:00
Subject: Re: How to delete array element and add to previous element

On Jul 27, 2007, at 12:55 PM, Morton Goldberg wrote:

> The following code isn't a full solution to your problem, but I  
> think it might suggest a strategy you can use.
>
> <code>
> raw_data = DATA.read
> data = []
> raw_data.each do |line|
>    data << line.chomp.split(/\t/)
> end
> recd = nil
> data.each_with_index do |row, i|
>    if row[0].empty?
>       recd[2] << row[2]
>       data[i] = nil
>    else
>       recd = row
>    end
> end
> data.compact!
> p data
>
> __END__
> 49	7	RP13,RP15,RP17,RP19,RP24,	12X2	33XD	Wireless, Independent, 5%
> 		RP32,RP33
> 50	4	RP27,RP28,RP30,RP31 	10XC4	3X567	Network, Isolated, 5%
> 51	31	R1,R2,R8,R30,R32,R33,R35,	0603,R10K,1%	0603	3%,1/12W
> 		R37,R39,R41,R42,R43,R49,
> 		R50,R51,R52,R58,R68,R69,
> 		R71,R72,R74,R85,R95,R117,
> 		R129,R130,R155,R156,R158,
> 		R160
> </code>
>
> <result>
> [["49", "7", "RP13,RP15,RP17,RP19,RP24,RP32,RP33", "12X2", "33XD",  
> "Wireless, Independent, 5%"],
> ["50", "4", "RP27,RP28,RP30,RP31 ", "10XC4", "3X567", "Network,  
> Isolated, 5%"],
> ["51", "31",  
> "R1,R2,R8,R30,R32,R33,R35,R37,R39,R41,R42,R43,R49,R50,R51,R52,R58,R68, 
> R69,R71,R72,R74,R85,R95,R117,R129,R130,R155,R156,R158,R160",  
> "0603,R10K,1%", "0603", "3%,1/12W"]]
> </result>

The following does the job in one pass, rather than three:

<code>
raw_data = DATA.read
data = []
recd = nil
raw_data.each do |line|
    row = line.chomp.split("\t")
    if row[0].empty?
       recd[2] << row[2]
    else
       data << (recd = row)
    end
end
p data
</code>

Regards, Morton