indices

/*
 *  call-seq:
 *     hsh.indexes(key, ...)    => array
 *     hsh.indices(key, ...)    => array
 *
 *  Deprecated in favor of <code>Hash#select</code>.
 *
 */

static VALUE
rb_hash_indexes(argc, argv, hash)
    int argc;
    VALUE *argv;
    VALUE hash;
{
    VALUE indexes;
    int i;

    rb_warn("Hash#%s is deprecated; use Hash#values_at",
            rb_id2name(rb_frame_last_func()));
    indexes = rb_ary_new2(argc);
    for (i=0; i<argc; i++) {
        RARRAY(indexes)->ptr[i] = rb_hash_aref(hash, argv[i]);
        RARRAY(indexes)->len++;
    }
    return indexes;
}