Recursive stack size

How i can know 开发者_运维知识库the current method stack frame while a recursive call in ruby?

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I have no idea why you would need that, but caller.size should do the job:

def recurse(n)
  puts caller.size
  recurse(n-1) unless n <= 0
end

recurse(5)  # => Outputs 1 to 6

This works in Ruby 1.9, but there is apparently a bug in Ruby 1.8. Just filed it on redmine.