Learn to Program, 2nd Edition

Exercises from Chapter 9

Improved ask Method

How you could do it:

def ask question
  while true
    puts question
    reply = gets.chomp.downcase
    if reply == 'yes'
      return true
    end
    if reply == 'no'
      return false
    end
    #  If we got this far, then we're going to loop
    #  and ask the question again.
    puts 'Please answer "yes" or "no".'
  end
end
likes_it = ask 'Do you like eating tacos?'
puts likes_it

Do you like eating tacos?
yes
true

How I would do it:

def ask question
  while true
    puts question
    reply = gets.chomp.downcase
    return true  if reply == 'yes'
    return false if reply == 'no'
    puts 'Please answer "yes" or "no".'
  end
end
puts(ask('Do you like eating tacos?'))

Do you like eating tacos?
yes
true

Old-School ...