From: Tanushree Bhoi <tanushree.bhoi@...>
Date: 2006-05-26T17:59:13+09:00
Subject: Re: help regarding extracting a particular value in a file

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Hi Nuralanur

Thanks for your reply and help.
My data.txt file contains data like

p1,p2,p3
c1,c2,c3

I did try your code.Its giving output
p2
c2

but i want to retrieve a single value like p2(2nd value of 1st row ) or c3
(3rd value of 2nd row)only.

Thanks in advance
Tanushree





On 5/26/06, Nuralanur@aol.com <Nuralanur@aol.com> wrote:
>
> Assuming that your data is in a file "data_to_split.txt" in the same
> directory,
> you can do this:
>
>
>
> file_name=3D"data_to_split.txt"
> data_array=3DIO.readlines(file_name)  #  reads content of file into an Ar=
ray
> (
> each entry =3D one  line)
> only_second_entries=3D[]
> data_array.each{|line|
> only_second_entries<<(line.split(',')[1])  # note that indices start  at =
0
> in
> Ruby
> }
> p 'only second entries contains'
> p  only_second_entries
>
> If you have more complicated patterns that separate your data than just a
> comma,
> you can also use split in conjunction with "regular  expressions".
>
>          only_second_entries<<(line.split(/,/)[1])  # note that indices
> start  at 0 in Ruby
>
> These "regular expressions" allow to search for things like "a comma and
> then two small letters, followed by at least three numbers and then
> anything but
> "A"", so there is
> room for arbitrary complexity ...
> Regular expressions are explained in detail here:
>
> _http://www.regular-expressions.info/_ (
> http://www.regular-expressions.info/)
>
> Best regards,
>
> Axel
>
>
>


--=20
Thanks & Regards
Tanushree Bhoi
Software Engineer
applabs Technologies
e-mail : tanushree.bhoi@applabs.com
           :tanushree.bhoi@gmail.com

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