From: Florian Gross <flgr@...>
Date: 2004-09-29T01:19:24+09:00
Subject: Re: Best name for "this method" ?

trans. (T. Onoma) wrote:
> Well, that's my question. Does it just retrieve a reference or does it have to 
> create the binding? If it's just grabbing a reference to an already existing 
> binding, that's fine, but then I don't see why using set_trace_function 
> should slow a program down as much as it does. So I'm guessing it has to 
> create a binding. Although ruby_frame->prev suggests it already exists.

 From my limited knowledge of the internals it would only have to tweak 
a BLOCK and wrap it into a Binding object. That's still not costless of 
course, but you only have to pay that performance cost when you're 
actually using Binding.of_caller which is okay IMHO.

Regards,
Florian Gross