Foo::_fiddle has no relation to the Bar::_fiddle method and the similarity of names is a coincidence. Unfortunately, calling the Foo::wonk method via an instance of Bar will still call the Bar::_fiddle method, even though this may not be desireable behavior. Not having clean encapsulation of private methods makes this very difficult to get around. You could try to get around it like this: 
  # in package Foo
  sub wonk {
      my $self = shift;
      _fiddle($self, @_);
  }

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I'd prefer to write that $self->Foo::_fiddle, even though it would be slower.
That looks better, but if the private method violates encapsulation and reaches into the object (a common practice), it might be making assumptions about what's there, even if those assumptions are not warranted.
Don't understand what problem/assumptions you see as problematic here. Can you elaborate?

I don't think I would use delegation for private methods; it feels like using a wrench to unscrew a lightbulb.

In reply to Re: Re: Re: Often Overlooked OO Programming Guidelines by ysth
in thread Often Overlooked OO Programming Guidelines by Ovid

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