////////////////////////////////////////////////////////////////////////////// // // (C) Copyright Ion Gaztanaga 2013-2013. Distributed under the Boost // Software License, Version 1.0. (See accompanying file // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) // // See http://www.boost.org/libs/container for documentation. // ////////////////////////////////////////////////////////////////////////////// //[doc_custom_small_vector #include //Make sure assertions are active #ifdef NDEBUG #undef NDEBUG #endif #include int main () { using namespace boost::container; //This option specifies the desired alignment for the internal value_type typedef small_vector_options< inplace_alignment<16u> >::type alignment_16_option_t; //Check 16 byte alignment option small_vector sv; assert(((std::size_t)sv.data() % 16u) == 0); //This option specifies that a vector will increase its capacity 50% //each time the previous capacity was exhausted. typedef small_vector_options< growth_factor >::type growth_50_option_t; //Fill the vector until full capacity is reached small_vector growth_50_vector(10, 0); const std::size_t old_cap = growth_50_vector.capacity(); growth_50_vector.resize(old_cap); //Now insert an additional item and check the new buffer is 50% bigger growth_50_vector.push_back(1); assert(growth_50_vector.capacity() == old_cap*3/2); //This option specifies that a vector that will use "unsigned char" as //the type to store capacity or size internally. typedef small_vector_options< stored_size >::type size_option_t; //Size-optimized vector is smaller than the default one. typedef small_vector, size_option_t > size_optimized_vector_t; assert((sizeof(size_optimized_vector_t) < sizeof(small_vector))); return 0; } //]