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    std::future::valid

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    < cpp‎ | thread‎ | future

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    C++
     
    Thema Support-Bibliothek
    Threads
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    Threads
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    thread(C++11)
    this_thread Namespace
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    this_thread namespace
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    get_id(C++11)
    yield(C++11)
    sleep_for(C++11)
    sleep_until(C++11)
    Gegenseitigen Ausschluss
    Original:
    Mutual exclusion
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    mutex(C++11)
    timed_mutex(C++11)
    Generische Sperrverwaltung
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    Generic lock management
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    lock(C++11)
    try_lock(C++11)
    defer_lock
    try_to_lock
    adopt_lock    		(C++11)
    (C++11)
    (C++11)
    Zustand Variablen
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    Condition variables
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    condition_variable(C++11)
    condition_variable_any(C++11)
    notify_all_at_thread_exit(C++11)
    cv_status(C++11)
    Futures
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    Futures
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    promise(C++11)
    future(C++11)
    shared_future(C++11)
    packaged_task(C++11)
    async(C++11)
     
    std::future
    future::future
    future::~future
    future::operator=
    future::share
    Erste das Ergebnis
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    Getting the result
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    future::get
    State
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    State
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    future::valid
    future::wait
    future::wait_for
    future::wait_until
     
    bool valid()const;
    		(seit C++11)
    Prüft, ob das Future einen Zustand mit einem Promise teilt. Dies ist nur der Fall für Futures die durch std::promise::get_future(), std::packaged_task::get_future() oder std::async() entstanden sind, bis das erste Mal get()orshare() aufgerufen wird .
    Original:
    Checks if the future refers to a state shared with a promise. This is the case only for futures returned by std::promise::get_future(), std::packaged_task::get_future() or std::async() until the first time get()orshare() is called.
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    Inhaltsverzeichnis

    [Bearbeiten]Parameter

    (None)
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    (none)
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    [Bearbeiten]Rückgabewert

    true wenn sich *this auf einen gemeinsamen Zustand bezieht, sonst false .
    Original:
    true if *this refers to a shared state, otherwise false.
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    [Bearbeiten]Ausnahmen

    noexcept specification:  
    noexcept
      (seit C++11)

    [Bearbeiten]Beispiel

    This section is incomplete
    Reason: no example

    [Bearbeiten]Siehe auch

    wartet darauf dass das Ergebnis verfügbar wird
    Original:
    waits for the result to become available
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    (öffentliche Elementfunktion)[edit]
    Von „https://de.cppreference.com/mwiki/index.php?title=cpp/thread/future/valid&oldid=28009“
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