Using rb_str_insert from c

Ruby
1

Hi all,

The function:

static VALUE rb_str_insert(VALUE, VALUE, VALUE)

is defined in string.c but is static and so is not avalible to me to
call
directly on my string. I have a feeling rb_funcall is my answer but I
can’t
find any decent documentation on getting the functions ID.

Can anyone help?

Cheers,
Phil

2

Phil J. wrote:

Can anyone help?

Cheers,
Phil

Offhand I think this will work:

id_insert = rb_intern(“insert”); // you can do this once

rb_funcall(str, id_insert, 2, idx, str2);

3

On Wed, May 24, 2006 at 07:37:21 +0900, Joel VanderWerf wrote:

id_insert = rb_intern(“insert”); // you can do this once

rb_funcall(str, id_insert, 2, idx, str2);

You were spot-on, the mistake I was making was:

ID id = rb_intern(“insert”);
rb_funcall(cur_str, id, 3, cur_str, idx, str2);

Which I guess would be the Ruby equivilent of:

str.insert(str, 1, “hello world”)

Thanks,
Phil

4

Hi,

At Wed, 24 May 2006 07:27:21 +0900,
Phil J. wrote in [ruby-talk:194275]:

The function:

static VALUE rb_str_insert(VALUE, VALUE, VALUE)

is defined in string.c but is static and so is not avalible to me to call
directly on my string. I have a feeling rb_funcall is my answer but I can’t
find any decent documentation on getting the functions ID.

If you are responsible to the arguments, rb_str_update() might
be an answer.