new

/*
 *  call-seq:
 *    Enumerable::Enumerator.new(obj, method = :each, *args)
 *
 *  Creates a new Enumerable::Enumerator object, which is to be
 *  used as an Enumerable object using the given object's given
 *  method with the given arguments.
 *
 *  Use of this method is discouraged.  Use Kernel#enum_for() instead.
 */
static VALUE
enumerator_initialize(argc, argv, obj)
    int argc;
    VALUE *argv;
    VALUE obj;
{
    VALUE recv, meth = sym_each;

    if (argc == 0)
        rb_raise(rb_eArgError, "wrong number of argument (0 for 1)");
    recv = *argv++;
    if (--argc) {
        meth = *argv++;
        --argc;
    }
    return enumerator_init(obj, recv, meth, argc, argv);
}