.. _program_listing_file_src_bitrl_utils_predicates.h:

Program Listing for File predicates.h
=====================================

|exhale_lsh| :ref:`Return to documentation for file <file_src_bitrl_utils_predicates.h>` (``src/bitrl/utils/predicates.h``)

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

.. code-block:: cpp

   #ifndef PREDICATES_H
   #define PREDICATES_H
   
   #include "bitrl/bitrl_types.h"
   
   namespace bitrl{
    
     struct NotNull 
     {
     
       NotNull()
       {}
       
       template<typename ITERATOR>
       bool operator()(const ITERATOR* itr)const{
           return itr!=nullptr;
       }
     };
     
     struct IsActive
     {
     
       IsActive()
       {}
       template<typename ITERATOR>
       bool operator()(const ITERATOR* itr)const{
         return itr->is_active();
       }
     
     };
   
     struct ActiveBoundaryObject
     {
   
        ActiveBoundaryObject()
        {}
   
        template<typename ITERATOR>
        bool operator()(const ITERATOR* itr)const{
   
            return (itr->is_active() && itr->on_boundary());
        }
     };
   
   }
   #endif