std::packaged_task<R(Args...)>::~packaged_task - cppreference.com
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    std::packaged_task<R(Args...)>::~packaged_task

    From cppreference.com
     
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    std::packaged_task
     
    ~packaged_task();

    Abandons the shared state and destroys the stored task object.

    As with std::promise::~promise, if the shared state is abandoned before it was made ready, an std::future_error exception is stored with the error code std::future_errc::broken_promise).

    Parameters

    (none)

    Example