Class predicate

test/test_algorithm.cpp:2202–2208

    TEST(find_if)
    {
      struct predicate
      {
        bool operator()(int i) const
        {
          return (i == 5);
        }
      };

      int* itr1 = std::find_if(std::begin(dataA), std::end(dataA), predicate());
      int* itr2 = etl::find_if(std::begin(dataA), std::end(dataA), predicate());