ruby - How to use "Next!" on Rails for a loop?

Question

Salutations,

I'm a newbie learning the Rails (Ruby On Rails) program and I've came to a road block on one of the lessons. The assignment has me creating an odd numbers for the script to read starting from "18 to 0" using the "next" component. This is the example they've given me to change :

i = 20
loop do
  i -= 1
  print "#{i}"
  break if i <= 0
end "

I wanted to know if I should the "next" to create a modulo that will begin with i leading to 0 or instead 18 ? It would be like this :

i = 20
loop do
  i -= 1
  next if i % 18 == 0
  print "#{i}"
  break if i <= 0
end

• T-Boye

Answer 1

First of all, what is the question? If the question is, how to skip even numbers, then you are almost there. You would do % 2 instead of % 18 though. If the question is "what does next do" you should look here and scroll down to the next section.

Suggestion:

i = 19
loop do
  i -= 1
  next if i % 2 == 1
  print i
  break if i <= 0
end