ORDI future | TradeSphere
Any improper use of usernames and passwords for the IIC may affect the fitness and properness of the person concerned under the Insurance Ordinance (Cap. 41) and may bring serious consequences. Future<String> someLongComputation() async { ...
Understanding the Context
} above, someLongComputation will immediately return a future, and after some time, said future will resolve with a string. What the await keyword does is wait until the future has returned a value and then returns said value, basically turning an asynchronous computation into a synchronous one, of course this would negate the whole point of ... The class template std::promise provides a facility to store a value or an exception that is later acquired asynchronously via a std::future object created by the std::promise object. Note that the std::promise object is meant to be used only once.
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Each promise is associated with a shared state, which contains some state information and a result which may be not yet evaluated, evaluated to a ... C++ includes built-in support for threads, atomic operations, mutual exclusion, condition variables, and futures. future (const future &) = delete; ~future (); future & operator =(const future &) = delete; future & operator =(future &&) noexcept; shared_future <R> share () noexcept; // retrieving the value /* see description */ get (); // functions to check state bool valid () const noexcept; void wait () const; template<class Rep, class Period> wait_until waits for a result to become available. It blocks until specified timeout_time has been reached or the result becomes available, whichever comes first. The return value indicates why wait_until returned.
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If the future is the result of a call to async that used lazy evaluation, this function returns immediately without waiting. The behavior is undefined if valid () is false before ... If the future is the result of a call to std::async that used lazy evaluation, this function returns immediately without waiting. This function may block for longer than timeout_duration due to scheduling or resource contention delays. The standard recommends that a steady clock is used to measure the duration.