std::chrono::system_clock - cppreference.com
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      std::chrono::system_clock

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      C++
       
      Biblioteca de utilitários
      Digite apoio (basic types, RTTI, type traits)
      Gerenciamento de memória dinâmica
      De tratamento de erros
      Utilidades do programa
      Variadic funções
      Data e hora
      Objetos de função
      (C++11)
      (C++11)
      Os operadores relacionais
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      Relational operators
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      rel_ops::operator!=
      rel_ops::operator>
      rel_ops::operator<=
      rel_ops::operator>=
      Pares e tuplas
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      Pairs and tuples
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      (C++11)
      (C++11)
      (C++11)
      Troque, avançar e avançar
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      Swap, forward and move
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      (C++11)
      (C++11)
      (C++11)
      (C++11)
       
      Utilitários de data e hora
       
      std::chrono::system_clock
      Funções de membro
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      Member functions
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      system_clock::now
      system_clock::to_time_t
      system_clock::from_time_t
       
      <tbody> </tbody>
      Definido no cabeçalho <chrono>
      class system_clock;
      		 (desde C++11)
      Classe std::chrono::system_clock representa o todo o sistema de relógio de parede em tempo real.
      Original:
      Class std::chrono::system_clock represents the system-wide real time wall clock.
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      Pode não ser monotónica: na maioria dos sistemas, o tempo do sistema pode ser ajustada em qualquer momento. É o único relógio de C + + que tem a capacidade para mapear os seus pontos de tempo ao estilo C, tempo e, portanto, a ser exibida.
      Original:
      It may not be monotonic: on most systems, the system time can be adjusted at any moment. It is the only C++ clock that has the ability to map its time points to C-style time, and, therefore, to be displayed.
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      std::chrono::system_clock cumpre os requisitos da TrivialClock.
      Original:
      std::chrono::system_clock meets the requirements of TrivialClock.
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      Tipos de membro

      Tipo de membro
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      Member type
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      		 Definition
      rep
      assinado tipo de aritmética que representa o número de carrapatos na duração do relógio
      Original:
      signed arithmetic type representing the number of ticks in the clock's duration
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      period
      um tipo de std::ratio representa o período tique-taque do relógio, em segundos
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      an std::ratio type representing the tick period of the clock, in seconds
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      duration
      std::chrono::duration<rep, period>, capaz de representar durações negativos
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      std::chrono::duration<rep, period>, capable of representing negative durations
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      time_point
      o tipo de ponto este relógio do tempo, std::chrono::time_point<system_clock>
      Original:
      the type of this clock's time point, std::chrono::time_point<system_clock>
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      Constantes de membros

      bool is_steady
      [estática]
      true se o tempo entre os carrapatos é constante e as chamadas para os valores now retorno que aumentam de forma monótona
      Original:
      true if the time between ticks is constant and calls to now return values that increase monotonically
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      (membro estático público constante)

      Funções de membro

      [estática]
      retorna um std::chrono::time_point representando o presente momento
      Original:
      returns a std::chrono::time_point representing the current point in time
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      (função public static membro) [edit]
      [estática]
      converte um sistema de ponto relógio para std::time_t
      Original:
      converts a system clock time point to std::time_t
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      (função public static membro) [edit]
      [estática]
      converte std::time_t a um ponto de tempo do relógio do sistema
      Original:
      converts std::time_t to a system clock time point
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      (função public static membro) [edit]

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