the hot air balloon is the oldest successful human carrying flight technology the first hot air balloon flown in the united states was launched from the walnut street jail in philadelphia on january 9 1793 by the french aeronaut jean pierre blanchardhe first hot air balloon flown in the united states was launched from the walnut street jail in philadelphia on january 9 1793 by the french aeronaut jean pierre blanchard
shared_ptr is now part of the C++11 Standard, as std::shared_ptr. Starting with Boost release 1.53, shared_ptr can be used to hold a pointer to a dynamically allocated array. This is accomplished by using an array type (T[] or T[N]) as the template parameter.
std::unique_ptr is a smart pointer that retains sole ownership of an object through a pointer and destroys that object when the unique_ptr goes out of scope. No two unique_ptr instances can manage the same object. The object is destroyed and its memory deallocated when either of the following happens: 1  the managing unique_ptr object is destroyed.  the managing unique_ptr object is assigned another pointer via operator= or reset().