Namespace
Varianti

std::chrono::duration::operator+(unary), std::chrono::duration::operator-(unary)

Da cppreference.com.
< cpp‎ | chrono‎ | duration

 
 
Utilità libreria
Tipo di supporto (basic types, RTTI, type traits)
Gestione della memoria dinamica
La gestione degli errori
Programma di utilità
Funzioni variadic
Data e ora
Funzione oggetti
initializer_list(C++11)
bitset
hash(C++11)
Gli operatori relazionali
Original:
Relational operators
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rel_ops::operator!=
rel_ops::operator>
rel_ops::operator<=
rel_ops::operator>=
Coppie e tuple
Original:
Pairs and tuples
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pair
tuple(C++11)
piecewise_construct_t(C++11)
piecewise_construct(C++11)
Swap, in avanti e spostare
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::duration
Membri funzioni
Original:
Member functions
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duration::duration
duration::operator=
duration::count
duration::zero
duration::min
duration::max
duration::operator+
duration::operator-
duration::operator++
duration::operator--
duration::operator+=
duration::operator-=
duration::operator*=
duration::operator/=
duration::operator%=
Non membri funzioni
Original:
Non-member functions
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common_type
operator+
operator-
operator*
operator/
operator%
operator==
operator!=
operator<
operator<=
operator>
operator>=
duration_cast
Helper classi
Original:
Helper classes
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treat_as_floating_point
duration_values
 
constexpr duration operator+() const;
(1)
constexpr duration operator-() const;
(2)
Implementa unari meno e più unario per la durata.
Original:
Implements unary plus and unary minus for the durations.
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Se rep_ è una variabile membro nell'azienda il numero di zecche in un oggetto durata
Original:
If rep_ is a member variable holding the number of ticks in a duration object,
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1)
Equivalente a return *this;
Original:
Equivalent to return *this;
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2)
Equivalente a return duration(-rep_);
Original:
Equivalent to return duration(-rep_);
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Indice

[modifica] Parametri

(Nessuno)
Original:
(none)
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[modifica] Valore di ritorno

1)
una copia di questo oggetto durata
Original:
a copy of this duration object
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2)
una copia di questo oggetto durata, con il numero di tick negati
Original:
a copy of this duration object, with the number of ticks negated
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[modifica] Esempio

#include <chrono>
#include <iostream>
 
int main()
{
    std::chrono::seconds s1(10);
    std::chrono::seconds s2 = -s1;
 
    std::cout << "negated 10 seconds are " << s2.count() << " seconds\n";
}

Output:

negated 10 seconds are -10 seconds

[modifica] Vedi anche

incrementa o decrementa il conteggio
Original:
increments or decrements the tick count
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(membro pubblico funzione) [edit]
implementa operazioni aritmetiche con durate come argomenti
Original:
implements arithmetic operations with durations as arguments
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(funzione di modello) [edit]