libs/local_function/test/add.cpp

   1
   2 // Copyright (C) 2009-2012 Lorenzo Caminiti
   3 // Distributed under the Boost Software License, Version 1.0
   4 // (see accompanying file LICENSE_1_0.txt or a copy at
   5 // http://www.boost.org/LICENSE_1_0.txt)
   6 // Home at http://www.boost.org/libs/local_function
   7
   8 #include <boost/config.hpp>
   9 #ifdef BOOST_NO_VARIADIC_MACROS
  10 #   error "variadic macros required"
  11 #else
  12
  13 #include <boost/local_function.hpp>
  14 #include <boost/detail/lightweight_test.hpp>
  15 #include <algorithm>
  16
  17 //[add
  18 int main(void) {                            // Some local scope.
  19     int sum = 0, factor = 10;               // Variables in scope to bind.
  20
  21     void BOOST_LOCAL_FUNCTION(const bind factor, bind& sum, int num) {
  22         sum += factor * num;
  23     } BOOST_LOCAL_FUNCTION_NAME(add)
  24
  25     add(1);                                 // Call the local function.
  26     int nums[] = {2, 3};
  27     std::for_each(nums, nums + 2, add);     // Pass it to an algorithm.
  28
  29     BOOST_TEST(sum == 60);                  // Assert final summation value.
  30     return boost::report_errors();
  31 }
  32 //]
  33
  34 #endif // VARIADIC_MACROS
  35