escaping the .each { } iteration early in Ruby

Question

code:

 c = 0    items.each { |i|      puts i.to_s        # if c > 9 escape the each iteration early - and do not repeat      c++    }   

I want to grab the first 10 items then leave the "each" loop.

What do I replace the commented line with? is there a better approach? something more Ruby idiomatic?

Answer 1

While the break solution works, I think a more functional approach really suits this problem. You want to take the first 10 elements and print them so try

items.take(10).each { |i| puts i.to_s } 

Answer 2

There is no ++ operator in Ruby. It's also convention to use do and end for multi-line blocks. Modifying your solution yields:

c = 0   items.each do |i|     puts i.to_s       break if c > 9   c += 1  end 

Or also:

items.each_with_index do |i, c|     puts i.to_s       break if c > 9 end 

See each_with_index and also Programming Ruby Break, Redo, and Next.

Update: Chuck's answer with ranges is more Ruby-like, and nimrodm's answer using take is even better.