Hey Jake, thanks very much for this Ruby series. It’s a really nice complement to books and online tutorials like Codecademy. Sometimes the tutorials can be really frustrating because the hint and Q&A board might not be enough to get you out of being stuck on a problem, killing your momentum and motivation.

As an extra means of practice, it would be really cool if your videos were accompanied by a description of exactly what will be accomplished in that lesson (i.e, written like a homework problem, just like the ‘Review’ exercises of the Codecademy lessons). That way, learners could try out the problem first if they think they might be able to do it on their own, and then use the video to check against their work or for help if they can’t make it run. 

4:26 “so what that does is it makes bomb_timer negative one” – no, it is shorthand for subtracting one from bomb_timer

Hi, I was wondering if there is any difference in result between your code:

loop do
any_number -= 5
next if any_number % 2 != 0
puts “#{any_number}”
break if any_number <= 0 end and this: loop do any_number -= 5 puts "#{any_number}" if any_number % 2 == 0 break if any_number <= 0 end Thanks.

While I would not be anywhere near as rude as Jędrek, I do concur that you should have long since explained the use of the up arrow, which is actually pretty common on command-line systems, and switched to using that, probably taking the time to explain it for two to three videos and presuming people knew what was happening after that point, by simply saying “… and up arrow to recall the last command”. The drag and drop stuff is really, really, **really** tedious by this point…

(error)
                   Time_fix = 50
                    until Time_fix < = 20                     puts Time_fix [line5]             time_fix = time_fix - 1 end (then, in the prompt) --> :5:in ‘

You are such a great teacher! Thanks for explaining everything so simply.

I can ‘t understand the last example of loop do & next if 🙁

Why did you put puts “#{even}” using the speech marks-curly braces to print the next if loop, would puts even not have worked?

These videos are extremely helpful and ive been waiting for the loops for a while. glad to finally get to it now! 

3:54 It could also be represented as bomb_timer -= 1. Nice video.

Hi Jake,

Im confused regarding this code on the loop do:

no = 100
loop do
  no -= 1
  next if no % 2 != 0
  puts “#{no}”
  break if no <= 0 end Here is the reasoning as I understand it: (1) sets no to 100 (2) do the following (3) -1 from no to  give 99 (4) next(I dont know what this next is for).  If our no (99) does not have a remainder of zero after being divided by 2 (it doesnt in this case because the remainder is 1) then it outputs the number.  But wouldnt this output be 99? Whenever I run the program it outputs 98, 96 and all the other even numbers. Please can you clarify?

You call “while” a method, but I believe “while” is a token.

for those of you who are used to c, c++ etc. a do-while loop in c is a begin-end while in ruby. ex:
hp = 30                       
begin
  hp -= 2
  puts “Damage done, hp remaining #{hp}”
end while hp > 0
puts “Game Over”