ruby,proc , Having trouble calling a Proc within a Method within a Class

Question:

Tag: ruby,proc

I am struggling to debug my issue; I am trying to use a Proc within a method, all inside a class. When I don't type in the "class" details, my program compiles fine; when I specify the class name, however, I get a variety of different errors.

Note: I posted this question on CodeReview.StackExchange.com, but it was off-topic there; the mods (?) recommended I ask the question here.

Background. Here is the prompt that I was given, taken directly from pine.fm:

Grandfather Clock. Write a method which takes a block and calls it once for each hour that has passed today. That way, if I were to pass in the block do puts 'DING!' end, it would chime (sort of) like a grandfather clock. Test your method out with a few different blocks (including the one I just gave you). Hint: You can use Time.now.hour to get the current hour. However, this returns a number between 0 and 23, so you will have to alter those numbers in order to get ordinary clock-face numbers (1 to 12).

The code that works:

def hourlyRing ring
time = Time.now.hour%12;
hour_set =[12, 1, 2, 3, 4, 5, 6, 7, 8 , 9 , 10, 11];
(hour_set[time].to_i).times do
ring.call
end
end

ring = Proc.new do
puts 'DING!'
end

hourlyRing ring


It produces the following (correct, since it's 4 p.m. here) output:

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