Question

Let’s say I have this each loop in Ruby.

@list.each { |i|
  puts i

  if i > 10
    break
  end
}

Where I want to loop through the list until a condition is met.

This stung me as “un Ruby’ish” and since I’m new to Ruby, is there a Ruby way to do this?

Answer 1

You can use Enumerable#detect or Enumerable#take_while, depending on the result you want.

@list.detect { |i|
  puts i
  i > 10
} # Returns the first element greater than 10, or nil.

As others have noted, a better style would be to first make your sub-selection and then act on it, e.g.:

@list.take_while{ |i| i <= 10 }.each{|i| puts i}