Learn to Program, 2nd Edition

The Method each

The method each allows us to do something (whatever we want) to each object the array points to. (It looks weird, though, and this can throw people off, so brace yourself.)

For example, if we want to say something nice about each language in the following array, we could do something like this:

languages = ['English', 'Norwegian', 'Ruby']
languages.each do |lang|
  puts 'I love ' + lang + '!'
  puts 'Don\'t you?'
end
puts 'And let\'s hear it for Java!'
puts '<crickets chirp in the distance>'

I love English!
Don't you?
I love Norwegian!
Don't you?
I love Ruby!
Don't you?
And let's hear it for Java!
<crickets chirp in the distance>

What just happened? (Aside from Java getting pwn3d, heh-heh.) Well, we were able to go through ...