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t1 = Thread.new { sleep 100 }
t2 = Thread.new do
if Thread.current == Thread.main
puts "This is the main thread." # Does NOT print
end
1.upto(1000)
sleep 0.1
end
count = Thread.list.size # 3
if Thread.list.include?(Thread.main)
puts "Main thread is alive." # Always prints!
end
if Thread.current == Thread.main
puts "I'm the main thread." # Prints here...
end
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