Method: Module#alias_method

Defined in:
vm_method.c

#alias_method(new_name, old_name) ⇒ Module

Makes new_name a new copy of the method old_name. This can be used to retain access to methods that are overridden.

module Mod
  alias_method :orig_exit, :exit
  def exit(code=0)
    puts "Exiting with code #{code}"
    orig_exit(code)
  end
end
include Mod
exit(99)

produces:

Exiting with code 99

Returns:




# File 'vm_method.c'

static VALUE
rb_mod_alias_method(VALUE mod, VALUE newname, VALUE oldname)
{
    rb_alias(mod, rb_to_id(newname), rb_to_id(oldname));
    return mod;
}