From: Thiago Lewin <thiago.lewin@...>
Date: 2011-03-10T21:25:32+09:00
Subject: Re: delete one line of file

--20cf30434710eee45b049e1ff0eb
Content-Type: text/plain; charset=ISO-8859-1

Hi Joyce,

  # First you should read the file:
  alunos = IO.readlines('alunos.txt') # return an array with all ids

  # Remove the selected id:
  alunos.delete_if do |linha|
    dados = linha.split(":") #"quebra" quando encontrar dois pontos
    outrosDados = dados[0].split("!")

    outrosDados == login
  end

  # Open the file and rewrite the content
  f = File.open('alunos.txt', 'w')
  alunos.each |a|
    f.puts a
  end
  f.close

  This should work!




On Wed, Mar 9, 2011 at 11:55 PM, Joyce Lima <jojosl@hotmail.com> wrote:

> I'm doing one work school, sorry don't write english very good, I'm
> brasilian. I want delete only one line of File.
> I have two files and have to handle them according
> with data received by users in case some have
> Students enrolled in the following way name! id: registration.
> The user enters the id of the student, I have to search
> the file and delete the row for that id. Since there
> I found nothing specific files I'm using
> delete_if, look at the code, I'll attach it.
>
> Attachments:
> http://www.ruby-forum.com/attachment/6016/bd.rb
>
>
> --
> Posted via http://www.ruby-forum.com/.
>
>

--20cf30434710eee45b049e1ff0eb--