Tonight I went to Austin Ruby. At the end there was a pairing exercise.
The kata can be found on the Austin Ruby github page. It involved threads. I thought the point of using a high-level language like Ruby was to never deal with threads.
require 'thread'
p_count = ARGV[0]
if p_count.nil?
p_count = "2"
end
p_count = p_count.to_i
queue = Queue.new
puts "starting pusher"
pusher = Thread.new do
i = 0
while(true) do
queue << i
sleep 0.5
# puts "Adding #{i} to queue"
i = i + 1
true
end
end
sleep 20
puts "starting pulls"
pullers = []
y = 0
p_count.times do
y = y + 1
t = Thread.new {
while true do
puts "#{Thread.current.object_id}: #{queue.pop}"
sleep(rand(0..2))
end
}
pullers << t
sleep 0.7
t.run
puts "New thread"
end
while true do
# It is supposed to print forever
end
Image from World Digital Library, assumed allowed under Fair Use. Image from the Ashburnham Pentateuch, or Tours Pentateuch, a Latin manuscript of the first five books of the Old Testament from the 6th century or 7th century. Its place of origin is unknown.