From: joemacbusiness@...
Date: 2008-12-25T04:56:27+09:00
Subject: Re: newbie qusetion: read a file and print out same file

On Dec 24, 9:26 am, "David A. Black" <dbl...@rubypal.com> wrote:
> Hi --
>
>
>
> On Thu, 25 Dec 2008, joemacbusin...@gmail.com wrote:
> > Hi All,
>
> > How do I read an input file and print it back to STDOUT
> > exactly as the original file.   This should be very simple
> > but the output of my program is all garbled.
> > What am I doing wrong?
> > ( I am usinghttp://www.rubycentral.com/bookto learn Ruby)
>
> > The program, input, and runtime output are below.
>
> > Thanks, --JM
> > ================= snip ==============
>
> > $ cat ./test56.rb
> > #!/usr/local/bin/ruby
>
> > inputFile = File.readlines("input4", 'r')
>
> > for item in inputFile
> >    item.chop()
> >    print item, "\n"
> > end
>
> You're working too hard :-)
>
>    input_file = File.readlines("input4")
>    puts input_file
>
> or just
>
>    puts File.read("input4")
>
> If you do have occasion to loop through an array of lines (which no
> doubt you will at some point), remember that chop doesn't do a
> permanent chop. What you probably want is chomp!, which removes a
> trailing newline if there is one.
>
> David
>
> --
> David A. Black / Ruby Power and Light, LLC
> Ruby/Rails consulting & training:http://www.rubypal.com
> Coming in 2009: The Well-Grounded Rubyist (http://manning.com/black2)


Hello David,

I wanted to loop through the input file "line-by-line"
and print it out the same way.  Sorry I did not make that
clear.
Here is the code block that does what I wanted.

inputFile = File.open("input4", 'r')
while line = inputFile.gets()
    puts line
end

Thank you, --JM