From: Reid Thompson <reid.thompson@...>
Date: 2009-03-06T01:03:24+09:00
Subject: Re: add a new line after, w/txtfile thats comma delimited

On Fri, 2009-03-06 at 00:43 +0900, Robert Klemme wrote:
> On 05.03.2009 16:07, Mmcolli00 Mom wrote:
> > How do you add a new line after you have split a text file with
> > continuous values delimited with commas? Thanks in advance. MC
> > 
> > For example:
> > textfile contains: value1,value2,value3..
> > 
> > I want to output this file like this:
> > value1
> > value2
> > value3
> > 
> > #Here is my code:
> > 
> > File.open('temp.txt', 'r') do |temp|
> >      arraym = [] #<--I am using array so that I can use array functions
> > .but I dont have to use array for this
> 
> This creation of the empty Array is completely superfluous as you do 
> nothing with this Array.  You even do not need to declare the variable 
> outside of the block since you use it inside only and do not retain 
> values between iterations (lines).
> 
> >       temp.each_line do |line|
> >          arraym=  line.split(",",0)
> >          b.puts ""
> >          b.puts arraym # + "\n"
> >          b.puts ""
> >       end
> >  end
> 
> It can be as simple as
> 
> File.foreach "temp.txt" do |line|
>    puts "", line.split(/,/), ""
> end
> 
> You can as well do
> 
> File.foreach "temp.txt" do |line|
>    printf "\n%s\n", line.gsub(/,/, "\n")
> end
> 
> Kind regards
> 
> 	robert
> 
rthompso@raker /tmp $ echo "value1,value2,value3" >/tmp/file.txt
rthompso@raker /tmp $ echo "value1,value2,value3" >/tmp/file2.txt
rthompso@raker /tmp $ echo "value1,value2,value3" >/tmp/file1.txt
rthompso@raker /tmp $ cat file*txt
value1,value2,value3
value1,value2,value3
value1,value2,value3
rthompso@raker /tmp $  ruby -p -i -e 'gsub(/,/, "\n")' file*.txt
rthompso@raker /tmp $ cat file*txt
value1
value2
value3
value1
value2
value3
value1
value2
value3