From: Robert Klemme <shortcutter@...>
Date: 2009-06-09T23:07:36+09:00
Subject: Re: "puts"ing an array

2009/6/9 Rob Biedenharn <Rob@agileconsultingllc.com>:
> On Jun 9, 2009, at 8:52 AM, Peter Bailey 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")
>
> Dir.glob returns an Array
>>
>> File.open("F:/workflows/graphics/receipts/pngfiles.txt", "w") do |file|
>>  file.puts "#{files}"
>> end
>
> The default Array#to_s is like Array#join('').  You probably want to do
> either:
>  file.puts files.join("\n")
> or iterate on the files:
>  files.each do |pngfilename|
>    file.puts pngfilename
>  end

It's even simpler:

file.puts files

Kind regards

robert

-- 
remember.guy do |as, often| as.you_can - without end
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