Method: Class#allocate

Defined in:
object.c

#allocate ⇒ Object

Allocates space for a new object of class's class and does not call initialize on the new instance. The returned object must be an instance of class.

klass = Class.new do
  def initialize(*args)
    @initialized = true
  end

  def initialized?
    @initialized || false
  end
end

klass.allocate.initialized? #=> false

Returns:




# File 'object.c'

/*
 *  call-seq:
 *     class.allocate()   ->   obj
 *
 *  Allocates space for a new object of <i>class</i>'s class and does not
 *  call initialize on the new instance. The returned object must be an
 *  instance of <i>class</i>.
 *
 *      klass = Class.new do
 *        def initialize(*args)
 *          @initialized = true
 *        end
 *
 *        def initialized?
 *          @initialized || false
 *        end
 *      end
 *
 *      klass.allocate.initialized? #=> false
 *
 */

VALUE
rb_obj_alloc(VALUE klass)
{
    VALUE obj;

    if (RCLASS_SUPER(klass) == 0 && klass != rb_cBasicObject) {
    rb_raise(rb_eTypeError, "can't instantiate uninitialized class");
    }
    if (FL_TEST(klass, FL_SINGLETON)) {
    rb_raise(rb_eTypeError, "can't create instance of singleton class");
    }
    obj = rb_funcall(klass, ID_ALLOCATOR, 0, 0);
    if (rb_obj_class(obj) != rb_class_real(klass)) {
    rb_raise(rb_eTypeError, "wrong instance allocation");
    }
    return obj;
}