.. _program_listing_file__tmp_ws_src_libcaer_driver_include_libcaer_driver_resize_hack.hpp:

Program Listing for File resize_hack.hpp
========================================

|exhale_lsh| :ref:`Return to documentation for file <file__tmp_ws_src_libcaer_driver_include_libcaer_driver_resize_hack.hpp>` (``/tmp/ws/src/libcaer_driver/include/libcaer_driver/resize_hack.hpp``)

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

.. code-block:: cpp

   // -*-c++-*---------------------------------------------------------------------------------------
   // Copyright 2023 Bernd Pfrommer <bernd.pfrommer@gmail.com>
   //
   // Licensed under the Apache License, Version 2.0 (the "License");
   // you may not use this file except in compliance with the License.
   // You may obtain a copy of the License at
   //
   //     http://www.apache.org/licenses/LICENSE-2.0
   //
   // Unless required by applicable law or agreed to in writing, software
   // distributed under the License is distributed on an "AS IS" BASIS,
   // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   // See the License for the specific language governing permissions and
   // limitations under the License.
   
   #ifndef LIBCAER_DRIVER__RESIZE_HACK_HPP_
   #define LIBCAER_DRIVER__RESIZE_HACK_HPP_
   
   #include <stddef.h>
   
   namespace libcaer_driver
   {
   //
   // resize without initializing, taken from
   // https://stackoverflow.com/questions/15219984/
   // using-vectorchar-as-a-buffer-without-initializing-it-on-resize
   
   template <typename V>
   void resize_hack(V & v, size_t newSize)
   {
     struct vt
     {
       typename V::value_type v;
       vt() {}
     };
     static_assert(sizeof(vt[10]) == sizeof(typename V::value_type[10]), "alignment error");
     typedef std::vector<
       vt, typename std::allocator_traits<typename V::allocator_type>::template rebind_alloc<vt>>
       V2;
     reinterpret_cast<V2 &>(v).resize(newSize);
   }
   }  // namespace libcaer_driver
   #endif  // LIBCAER_DRIVER__RESIZE_HACK_HPP_