Espaços nominais
Variantes
Acções

std::chrono::high_resolution_clock::now

Da cppreference.com

 
 
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
initializer_list(C++11)
bitset
hash(C++11)
Os operadores relacionais
Original:
Relational operators
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rel_ops::operator!=
rel_ops::operator>
rel_ops::operator<=
rel_ops::operator>=
Pares e tuplas
Original:
Pairs and tuples
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pair
tuple(C++11)
piecewise_construct_t(C++11)
piecewise_construct(C++11)
Troque, avançar e avançar
Original:
Swap, forward and move
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swap
forward(C++11)
move(C++11)
move_if_noexcept(C++11)
declval(C++11)
 
 
std::chrono::high_resolution_clock
Funções de membro
Original:
Member functions
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high_resolution_clock::now
 
(a partir do 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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Índice

[editar] Parâmetros

(Nenhum)
Original:
(none)
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[editar] Valor de retorno

Um ponto de tempo representa o tempo atual.
Original:
A time point representing the current time.
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[editar] Exceções

noexcept specification:  
noexcept
  (a partir do C++ 11)

[editar] Exemplo

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

Possible output:

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