std::chrono::system_clock::now

 

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Os operadores relacionais Original: Relational operators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

rel_ops::operator!= rel_ops::operator> rel_ops::operator<= rel_ops::operator>=

Pares e tuplas Original: Pairs and tuples The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

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std::chrono::system_clock

Funções de membro Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

system_clock::now

system_clock::to_time_t

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staticstd::chrono::time_point<std::chrono::system_clock> now();		(desde C++11)

Retorna um ponto de tempo, representando, com o ponto atual no tempo.

Original:

Returns a time point representing with the current point in time.

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Parâmetros

(Nenhum)

Original:

(none)

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Valor de retorno

Um ponto de tempo representa o tempo atual.

Original:

A time point representing the current time.

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Exceções

noexcept specification:  

noexcept

  (desde C++11)

Exemplo

#include <iostream>#include <vector>#include <chrono>   int main(){for(unsignedlonglong size =1; size <10000000; size *=10){auto start = std::chrono::system_clock::now();std::vector<int> v(size, 42);auto end = std::chrono::system_clock::now();   auto elapsed = end - start;std::cout<< size <<": "<< elapsed.count()<<'\n';}}

Potencial saída:

1: 1 10: 2 100: 3 1000: 6 10000: 47 100000: 507 1000000: 4822