Automatic counter in Ruby for each?

Question

I want to use a for-each and a counter:

i=0
for blah in blahs
    puts i.to_s + \" \" + blah
    i+=1
end

Is there a better way to do it?

Answer 1

Yes, it's collection.each to do loops, and then each_with_index to get the index.

You probably ought to read a Ruby book because this is fundamental Ruby and if you don't know it, you're going to be in big trouble (try: http://poignantguide.net/ruby/).

Taken from the Ruby source code:

 hash = Hash.new
 %w(cat dog wombat).each_with_index {|item, index|
   hash[item] = index
 }
 hash   #=> {"cat"=>0, "wombat"=>2, "dog"=>1}