.. _program_listing_file__tmp_ws_src_ecl_core_ecl_utilities_include_ecl_utilities_singleton.hpp:

Program Listing for File singleton.hpp
======================================

|exhale_lsh| :ref:`Return to documentation for file <file__tmp_ws_src_ecl_core_ecl_utilities_include_ecl_utilities_singleton.hpp>` (``/tmp/ws/src/ecl_core/ecl_utilities/include/ecl/utilities/singleton.hpp``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   
   /*****************************************************************************
   ** Ifdefs
   *****************************************************************************/
   
   #ifndef ECL_UTILITIES_SINGLETON_HPP_
   #define ECL_UTILITIES_SINGLETON_HPP_
   
   /*****************************************************************************
   ** Namespaces
   *****************************************************************************/
   
   namespace ecl {
   
   /*****************************************************************************
   ** Class [Singleton]
   *****************************************************************************/
   template<typename T> class Singleton
   {
     public:
       static T& instance()
       {
           static T the_single_instance;  // assumes T has a protected default constructor
           return the_single_instance;
       }
   
       virtual ~Singleton () {}
   };
   
   } // namespace ecl
   
   #endif /*ECL_UTILITIES_SINGLETON_HPP_*/