autoload(p1, p2)
Registers filename to be loaded (using Kernel::require) the first time that module (which may be a String or a symbol) is accessed.
autoload(:MyModule, "/usr/local/lib/modules/my_module.rb")
static VALUE rb_f_autoload(VALUE obj, VALUE sym, VALUE file) { VALUE klass = rb_class_real(rb_vm_cbase()); if (NIL_P(klass)) { rb_raise(rb_eTypeError, "Can not set autoload on singleton class"); } return rb_mod_autoload(klass, sym, file); }