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.
Push to talk (PTT), is a means of instantaneous communication commonly employed in wireless cellular phone services that uses a button to switch a device from voice transmission mode to voice reception mode. The operation of phones used in this way is similar to walkie talkie use. PTT switches a phone from full duplex mode, where both parties can hear each other simultaneously, to half duplex mode, where only one party can speak at one time. Multiple parties to the conversation may also be included.