From: "Iñaki Baz Castillo" <ibc@...>
Date: 2009-10-13T02:10:02+09:00
Subject: Re: Any "easy" example of using T_HASH in a C extension?

El Lunes, 12 de Octubre de 2009, Aaron Patterson escribió:
> On Oct 12, 2009, at 9:24 AM, Iñaki Baz Castillo wrote:
> > Hi, I've found some tutorials explaining how to create and manipulat
> > a Ruby
> > array from a C extension using T_ARRAY and its realted functions.
> > However I find nothing about T_HASH, and trying to extract the
> > functions from
> > Ruby "hash.c" code is... not very cool.
> 
> Sure it is!  All of the hipsters at Beauty Bar were talking about it
> the other night.  But you'd better hop on board quickly before it
> becomes uncool, otherwise you're going to have to wait until it
> becomes "retro cool".
>
> > Is there any tutorial about creating a simple hash in Ruby C
> > extension?
> 
> rb_hash_new(void)
> rb_hash_aset(VALUE hash, VALUE key, VALUE val)
> rb_hash_aref(VALUE hash, VALUE key)

Yeah! just found these functions in an online presentation. :)
 

> Though, if you're just doing hash manipulation, why not just do it in
> Ruby?

Not exactly. I've coded a parser in C and it must return a Ruby hash.

Thanks a lot.



-- 
Iñaki Baz Castillo <ibc@aliax.net>