From: Rob Biedenharn <Rob@...>
Date: 2009-07-24T01:23:27+09:00
Subject: Re: Dir.entries, output showing nils

On Jul 23, 2009, at 11:42 AM, Mmcolli00 Mom wrote:
> When I output to line for RegisteredUser it shows all filenames as nil
> for all but the files. What can I change to show only the filename
> meeting the conditions?
> Thanks, MC
>
> outputs....
> nil
> nil
> nil
> nil
> AUR123443.txt
>
> Dir.entries(ascpath).each do |filename|
>
>  if filename =~ /^AU/ then
>    if filename[2..2] == "R" then
>    RegisteredUser = filename
>    else
>    NonRegisteredUser = filename
>    end
>  end
>
> #below shows nil for all files and then shows the registereduser file.
> puts RegisteredUser
>
> end
> --  
> Posted via http://www.ruby-forum.com/.


First, Capitalized names in Ruby are constants. You probably want a  
local_variable instead.

I'm not sure from your example and question what you really want, but  
here are some options:

# An array of filenames that start with AU
files = Dir.glob("AU*")   # or Dir["AU*"]

# Split one array into a pair of arrays (in another array) based on a  
condition:
files.partition {|filename| filename[2..2] == "R"}

(which is Enumerable#partition)

Does that help?

-Rob

Rob Biedenharn		http://agileconsultingllc.com
Rob@AgileConsultingLLC.com