From: Jamis Buck <jgb3@...>
Date: 2004-10-29T06:38:01+09:00
Subject: Re: Dereferencing PtrData in Ruby/DL

Jamis Buck wrote:
> Carl Youngblood wrote:
> 
>> Thanks Jamis.  Now I have another problem.  How do I get a pointer to
>> a pointer?  Let's say I've just allocated a pointer with:
>>
>> mypointer = DL.malloc(DL.sizeof('P'))
>>
>> How do I get a pointer to that pointer?  mypointer.to_p doesn't seem 
>> to work.
> 
> 
> Try "mypointer.ptr".
> 
> Then "mypointer.ref" to dereference the pointer.

Ack. Other way around. PtrData#ptr dereferences a pointer, while 
PtrData#ref obtains a pointer to the pointer in question.

- Jamis

-- 
Jamis Buck
jgb3@email.byu.edu
http://www.jamisbuck.org/jamis