From: Adam Prescott <adam@...>
Date: 2011-09-20T23:52:17+09:00
Subject: Re: appending \n to each element in an array

--0015174794a4045b4d04ad608231
Content-Type: text/plain; charset=UTF-8

>
> I want to put a newline at the end of each phrase in the array.


>> words = %w[some of my favourite words]
=> ["some", "of", "my", "favourite", "words"]

>> words.map! { |word| "#{word}\n" }
=> ["some\n", "of\n", "my\n", "favourite\n", "words\n"]

>> words
=> ["some\n", "of\n", "my\n", "favourite\n", "words\n"]

Check http://www.ruby-doc.org/core for the methods #map and #map!.

There is also the option of using #each and modifying each string in-place
as you iterate.

>> words = %w[some of my favourite words]
=> words.each { |word| word << "\n" }

However, modifying elements while iterating with #each can make your life
harder, so you should stick to map! to modify the array in-place.

--0015174794a4045b4d04ad608231--