Method swap

include/prealloced_array.h:538–548

Exchanges the content of the container by the content of rhs, which is another vector object of the same type. Sizes may differ. We use std::swap to do the operation. */

    We use std::swap to do the operation.
   */
  void swap(Prealloced_array &rhs) {
    // Just swap pointers if both arrays have done malloc.
    if (!using_inline_buffer() && !rhs.using_inline_buffer()) {
      std::swap(m_ext.m_alloced_size, rhs.m_ext.m_alloced_size);
      std::swap(m_ext.m_alloced_capacity, rhs.m_ext.m_alloced_capacity);
      std::swap(m_ext.m_array_ptr, rhs.m_ext.m_array_ptr);
      std::swap(m_psi_key, rhs.m_psi_key);
      return;
    }
    std::swap(*this, rhs);
  }

  /**
    Requests the container to reduce its capacity to fit its size.