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Bug #12535
closedare there 2 sleep methods defined?
Description
I'm updating this gem which "patches" the sleep method to use prepend, as I wanted to drop support to ruby < 2.0 . (previous implementation was using alias method chain like solution)
So I came across this funny behaviour:
module AlternativeSleep
def sleep(*)
puts "going to sleep now..."
super
end
end
class << self
prepend AlternativeSleep
end
class << Kernel
prepend AlternativeSleep
end
puts "these are the locations..."
puts Kernel.method(:sleep)
puts method(:sleep)
puts "now to work. if you see the going to sleep message only once, there's your bug"
Kernel.sleep 1
sleep 1
In order to make sleep work in both cases, I have to do those 2 prepends. Try to comment one of them, and you'll see that one of them will always work.
I'm led to believe that sleep method has two implementations, although that doesn't seem to make sense. Could you provide with some insight?
When I was using the alias-method-chain example, I was including in the main object, as main#sleep
somehow seemed to land in Kernel.sleep
(?) .
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