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std::error_code::operator bool

Da cppreference.com.
< cpp‎ | error‎ | error code
Versione del 26 ott 2012 alle 07:00 di TranslationBot (Discussione | contributi)

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C++
 
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)
 
La gestione degli errori
Gestione delle eccezioni
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Exception handling
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exception
uncaught_exception
exception_ptr(C++11)
make_exception_ptr(C++11)
current_exception(C++11)
rethrow_exception(C++11)
nested_exception(C++11)
throw_with_nested(C++11)
rethrow_if_nested(C++11)
Gestione delle eccezioni fallimenti
Original:
Exception handling failures
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terminate
terminate_handler
get_terminate(C++11)
set_terminate
unexpected(deprecato)
bad_exception
unexpected_handler(deprecato)
get_unexpected(C++11)(deprecato)
set_unexpected(deprecato)
Eccezione categorie
Original:
Exception categories
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logic_error
invalid_argument
domain_error
length_error
out_of_range
runtime_error
range_error
overflow_error
underflow_error
Codici di errore
Original:
Error codes
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Codici di errore
errno
Asserzioni
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Assertions
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assert
impianto system_error
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system_error facility
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error_category(C++11)
generic_category(C++11)
system_category(C++11)
error_condition(C++11)
errc(C++11)
error_code(C++11)
system_error(C++11)
 
std::error_code
Membri funzioni
Original:
Member functions
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error_code::error_code
error_code::operator=
error_code::assign
Modificatori
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Modifiers
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error_code::clear
Osservatori
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Observers
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error_code::value
error_code::category
error_code::default_error_condition
error_code::message
error_code::operator bool
Non membri funzioni
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Non-member functions
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operator<
operator==
operator!=
operator<<
make_error_code
Helper classi
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Helper classes
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is_error_code_enum
hash<std::error_code>
 
explicit operator bool() const;
 (dal C++11)
Controlla se il valore di errore è valido, cioè non da zero.
Original:
Checks if the error value is valid, i.e. non-zero.
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Parametri

(Nessuno)
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(none)
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Valore di ritorno

false se value() == 0, true altrimenti.
Original:
false if value() == 0, true otherwise.
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Eccezioni

noexcept specification:  
noexcept
  (dal C++11)
Estratto da "https://it.cppreference.com/mwiki/index.php?title=cpp/error/error_code/operator_bool&oldid=4714"