ruby - Does self ALWAYS refer to the current instance in an instance method definition? -

i understand question in instance method, self refers current instance of class. true no matter how many layers of methods or loops deep in within instance method definition?

generally, yes, though there metaprogramming methods can strange things self - instance, object#instance_eval allows pass block evaluated in context of instance. in case, self within block of other instance, so:

class foo end  class bar   def wacky     puts self.class #"bar"     foo.new.instance_eval       puts self.class #"foo"     end   end end 

without careful reading, might tempted think self within block refers bar instance, not so.

so see, purposes, can assume self self bound when entering method. although have ability pass blocks around different binding, self doesn't re-bound "by accident" in ruby. more interesting reading, might @ ruby binding class' documentation.