C extension: How to create a Hash entry with Symbol key?

ruby-talk
1

Hi, I do know how to create a hash from C in wich keys and values are strings:

  VALUE hash = rb_hash_new();
  rb_hash_aset(hash, rb_str_new("mykey",5), rb_str_new2(myvalue));

But now I want to create Hash entries with Symbol keys so the resulting Hash
would look like:
  { :mykey => "lalala" }

By reading the C API documentation I don't find how to do it:
  http://www.eqqon.com/index.php/Ruby_C_Extension

Any help please? Thanks a lot.

···

--
Iñaki Baz Castillo <ibc@aliax.net>

2

ops, solved right now:

  rb_hash_aset(hash, ID2SYM( rb_intern("mykey") ), rb_str_new2(myvalue));

:slight_smile:

···

El Miércoles, 21 de Octubre de 2009, Iñaki Baz Castillo escribió:

Hi, I do know how to create a hash from C in wich keys and values are
strings:

  VALUE hash = rb_hash_new();
  rb_hash_aset(hash, rb_str_new("mykey",5), rb_str_new2(myvalue));

But now I want to create Hash entries with Symbol keys so the resulting
Hash would look like:
  { :mykey => "lalala" }

--
Iñaki Baz Castillo <ibc@aliax.net>

3

This should do it.....

rb_hash_aset(hash, ID2SYM(rb_intern("mykey")), rb_str_new2(myvalue));

John

···

On Tue, Oct 20, 2009 at 4:54 PM, Iñaki Baz Castillo <ibc@aliax.net> wrote:

Hi, I do know how to create a hash from C in wich keys and values are
strings:

VALUE hash = rb_hash_new();
rb_hash_aset(hash, rb_str_new("mykey",5), rb_str_new2(myvalue));

But now I want to create Hash entries with Symbol keys so the resulting
Hash
would look like:
{ :mykey => "lalala" }