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Hi, I'm trying to get the value of a array from ruby source code,
That=
 is array.c

./ruby
arr=3DArray.n=
ew(3)
arr[0]=3D5
arr[1]=3D3
arr[2]=3D2

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These= lines should call this function, https://github.com/ruby/ruby/blob/= trunk/array.c#L568 according to this, http://www.ruby-doc.org/core-1.9.= 3/Array.html

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So I have added couple of line= s there to display the values of array. But i didn't get the expected resul= t.

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el=
se {
    memfill(RARRAY_PTR(ary), len=
, val);
    ARY_SET_LEN(ary, len);
    int i;
&nbs=
p;   int result<=
/span>;
    res=
ult =3D
 0;
    VALUE *s_arr =3D RARRAY_PTR(ary);
    for(i =3D 0; i =
< len; i++)<=
/span> {
        result =
=3D LONG2NUM(<=
span class=3D"pln">s_arr[i]);        printf("r: %d\n",result);
&nbs=
p;   }
}

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I got the result like this:

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arr=3DArray.new(3)
arr=
[0]=3D5
arr[=
1]=3D3
arr[<=
/span>2]=3D2
r: 9
r: 9
r:
 9
<=
/pre>=0A=0AWhy is this result? Why 9?
=0A=0AI have followed these =
to solve it:
=0A=0AHow to conve=
rt ruby array to C array with RubyInline?
https://git=
hub.com/ruby/ruby/blob/trunk/README.EXT#L131
https://github.com/ruby/ruby/blob/trunk/include/ruby/ruby.h#L708<=
li>https://github.com/ruby/ruby/blob/trunk/include/ruby/=
ruby.h#L731
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I also try editing/customizing=
 array.c:rb_ary_aset function like this:

static VALUE
r=
b_ary_aset(int argc, VALUE *argv, VALUE ary)
{
    lon=
g offset, beg, len;

    if (argc =3D=3D 3) {
 =
;       rb_ary_modify_check(ary);
  &=
nbsp;     beg =3D NUM2LONG(argv[0]);
    &=
nbsp;   len =3D NUM2LONG(argv[1]);
     &n=
bsp;  rb_ary_splice(ary, beg, len, argv[2]);
    &nb=
sp;   return argv[2];
    }
  &nbs=
p; if (argc !=3D 2) {
        rb_raise(rb_=
eArgError, "wrong number of arguments (%d for 2)", argc);
  &n=
bsp; }
    rb_ary_modify_check(ary);
   =
; if (FIXNUM_P(argv[0])) {
        offset =
=3D
 FIX2LONG(argv[0]);
        goto fixnum;    }
    if (rb_range_beg_len(argv[0], =
&beg, &len, RARRAY_LEN(ary), 1)) {
     &nbs=
p;  /* check if idx is Range */
      &nbs=
p; rb_ary_splice(ary, beg, len, argv[1]);

     &=
nbsp;  return argv[1];
    }
  &=
nbsp; offset =3D NUM2LONG(argv[0]);
fixnum:
    rb_ary=
_store(ary, offset, argv[1]);
    VALUE s;
  =
;  int temp,i;
    for (i=3D0; i<RARRAY_LEN(ary);=
 i++) {
        s =3D rb_inspect(RARRAY_PT=
R(ary)[i]);
        switch (TYPE(s)) {
=
            case T_FIXNUM:
=
           
     temp=3D0;
        &nbs=
p;     break;
         =
;   case T_STRING:
         =
;     temp=3D1;
        &nb=
sp;     break;
        &nbs=
p;   case T_ARRAY:
         =
;     temp=3D2;
        &nb=
sp;     break;
        &nbs=
p;   case T_BIGNUM:
        &nbs=
p;     temp=3D3;
        &n=
bsp;     break;
        &nb=
sp;   default:
         &nb=
sp;    temp=3D4;
       
       rb_raise(rb_eTypeError, "not valid value");
&=
nbsp;             break;
&n=
bsp;         }
    }
&nb=
sp;   return argv[1];


Still i can=
't understand how to get the value casting from VALUE var to int var.

Can anyone please help to display/printf the value of Ruby =
array in C?

Someone please reply.

Any ans=
wer would be highly appreciated.
Thanks in advance.


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