Method getBegin

include/tscore/Extendible.h:225–229

  size_t initFields(uintptr_t start_ptr); ///< tell this extendible where it's memory offset start is.

  uintptr_t
  getBegin() const
  {
    return uintptr_t(this) + ext_loc;
  }

  template <typename T> friend T          *create();
  template <typename T> friend uintptr_t   details::initRecurseSuper(T &, uintptr_t);