From: Dave Thomas <Dave@...>
Date: 2000-11-29T23:59:06+09:00
Subject: [ruby-talk:6632] Re: Why is WeakRef#__getobj__ missing from the pickaxe book?

cjon@sapphire.engin.umich.edu (Cullen J O'neill) writes:

> My question is, isn't it a better idea to just get a real reference
> to the object using __getobj__?

There are two reasons I can think of, but neither is a show-stopper.

1. You're assuming an implementation, which might not be there
   forever.

2. You're taking a risk by regenerating the original object
   reference.

The downside to using WeakRef the conventional way is a small
overhead during method dispatch as it searches one level up the class
chain. On balance, I'd probably just use it the conventional way.


Dave