From: "Jesús Gabriel y Galán" <jgabrielygalan@...>
Date: 2009-06-09T22:31:12+09:00
Subject: Re: "puts"ing an array

On Tue, Jun 9, 2009 at 2:52 PM, Peter Bailey<pbailey@bna.com> wrote:
> Hi,
> In the "pickaxe" book I see how to use a "puts" to populate a file with
> data. I try the same thing, and, it works, but, it's listing the data as
> an array. How can I get separate lines for each item in the array?
> Thanks,
> Peter
>
> In the book:
>  File.open("output.txt", "w") do |file|
>  file.puts "Hello"
>  file.puts "1 + 2 = #{1+2}"
>  end
>  # Now read the file in and print its contents to STDOUT
>  puts File.read("output.txt")
> produces:
>  Hello
>  1 + 2 = 3
>
> My script:
>  Dir.chdir("L:/png/69000")
>  files = Dir.glob("*.png")
>  File.open("F:/workflows/graphics/receipts/pngfiles.txt", "w") do |file|
>  file.puts "#{files}"
>  end
> produces:
>  69116.png69251.png69391.pngAZ69080.pngAZ69982.pngcx69362.pngcx69363.png

Dir.glob returns an array, so two possibilities are (untested):

File.open("F:/workflows/graphics/receipts/pngfiles.txt", "w") do |file|
  file.puts files.join("\n")
end

File.open("F:/workflows/graphics/receipts/pngfiles.txt", "w") do |file|
  files.each {|f| file.puts f }
end

Hope this helps,

Jesus.