<div class="t-tr-text">operador<div class="t-tr-dropdown"><div><div><div class="t-tr-dropdown-arrow-border"></div><div class="t-tr-dropdown-arrow"></div><div class="t-tr-dropdown-h">Original:</div><div class="t-tr-dropdown-orig">operator</div><div class="t-tr-dropdown-notes">The text has been machine-translated via [http://translate.google.com Google Translate].<br/> You can help to correct and verify the translation. Click [http://en.cppreference.com/w/Cppreference:MachineTranslations here] for instructions.</div></div></div></div></div> new<div class="t-tr-text">, Operador<div class="t-tr-dropdown"><div><div><div class="t-tr-dropdown-arrow-border"></div><div class="t-tr-dropdown-arrow"></div><div class="t-tr-dropdown-h">Original:</div><div class="t-tr-dropdown-orig">, operator</div><div class="t-tr-dropdown-notes">The text has been machine-translated via [http://translate.google.com Google Translate].<br/> You can help to correct and verify the translation. Click [http://en.cppreference.com/w/Cppreference:MachineTranslations here] for instructions.</div></div></div></div></div> new[]

 

C++

Idioma

Conceptos

Utilidades de la biblioteca

Strings biblioteca

Contenedores biblioteca

Algoritmos biblioteca

Los iteradores biblioteca

Numéricos biblioteca

Entrada / salida de la biblioteca

Localizaciones biblioteca

Expresiones biblioteca Regular (C++11)

Operaciones de biblioteca Atómica (C++11)

Tema Biblioteca de ayuda (C++11)

 

Utilidades de la biblioteca

Escriba apoyo (basic types, RTTI, type traits)

Gestión de memoria dinámica

Gestión de errores

Programa de servicios públicos

Funciones variadic

Fecha y hora

Objetos Function

initializer_list (C++11)

bitset

hash (C++11)

Operadores relacionales 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 y 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.

pair

tuple (C++11)

piecewise_construct_t (C++11)

piecewise_construct (C++11)

Cambiar, hacia adelante y mover Original: Swap, forward and move The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

swap

forward (C++11)

move (C++11)

move_if_noexcept (C++11)

declval (C++11)

 

Gestión de memoria dinámica

Bajo la gestión de memoria de nivel
Los asignadores Original: Allocators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
allocator
allocator_traits (C++11)
allocator_arg_t (C++11)
allocator_arg (C++11)
uses_allocator (C++11)
scoped_allocator_adaptor (C++11)
Inicializar el almacenamiento Original: Uninitialized storage The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
uninitialized_copy
uninitialized_copy_n (C++11)
uninitialized_fill
uninitialized_fill_n
raw_storage_iterator
get_temporary_buffer
return_temporary_buffer
Punteros inteligentes Original: Smart pointers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
unique_ptr (C++11)
shared_ptr (C++11)
weak_ptr (C++11)
auto_ptr (obsoleto)
owner_less (C++11)
enable_shared_from_this (C++11)
bad_weak_ptr (C++11)
default_delete (C++11)
Garbage soporte colección Original: Garbage collection support The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
declare_reachable (C++11)
undeclare_reachable (C++11)
declare_no_pointers (C++11)
undeclare_no_pointers (C++11)
pointer_safety (C++11)
get_pointer_safety (C++11)
Varios Original: Miscellaneous The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
pointer_traits (C++11)
addressof (C++11)
align (C++11)
C Library Original: C Library The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
malloc calloc	realloc free

 

Bajo la gestión de memoria de nivel

Funciones Original: Functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

operator new operator new[]

operator delete operator delete[]

get_new_handler (C++11)

set_new_handler

Clases Original: Classes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

bad_alloc

bad_array_new_length (C++11)

nothrow_t

Tipos Original: Types The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

new_handler

Objetos Original: Objects The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

nothrow

 

Defined in header <new>
void* operator new  ( std::size_t count );	(1)
void* operator new[]( std::size_t count );	(2)
void* operator new  ( std::size_t count, const std::nothrow_t& );	(3)
void* operator new[]( std::size_t count, const std::nothrow_t& );	(4)
void* operator new  ( std::size_t, void* ptr );	(5)
void* operator new[]( std::size_t, void* ptr );	(6)

Asigna solicitado número de bytes. Estas funciones de asignación son llamados por nuevas expresiones- asignar memoria en el que nuevo objeto se inicializa .

Original:

Allocates requested number of bytes. These allocation functions are called by nuevas expresiones- to allocate memory in which new object would then be initialized.

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1-2)

Asigna count bytes de memoria libre. Llama al puntero de función que devuelve std::get_new_handler en caso de error y repite los intentos de asignación hasta nuevo controlador no vuelve o se convierte en un puntero nulo, momento en el cual arroja std::bad_alloc .

Original:

Allocates count bytes from free store. Calls the function pointer returned by std::get_new_handler on failure and repeats allocation attempts until new handler does not return or becomes a null pointer, at which time throws std::bad_alloc.

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3-4)

Igual que el 1-2, pero devuelve un puntero nulo cuando se std::bad_alloc 1-2 tiro

Original:

Same as 1-2, but returns a null pointer when 1-2 would throw std::bad_alloc

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5-6)

no hace nada, ptr devoluciones. Estas versiones son llamados por la nueva expresión que construir objetos en el almacenamiento asignado previamente .

Original:

does nothing, returns ptr. These versions are called by new-expression which construct objects in previously allocated storage.

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Sustitución y sobrecarga

Las versiones 1-4) se declara implícitamente en cada unidad de traducción, incluso si el encabezado <new> no está incluido. Estas funciones son reemplazables': proporcionado por el usuario no miembro de función con la misma firma que sustituye a la versión implícita. A lo sumo una sustitución puede ser proporcionado para cada una de las cuatro funciones de asignación implícita. Además, el programa puede definir versiones de miembro de clase de estas funciones o definir las funciones de asignación con firmas diferentes (excepto en que no se permite a reemplazar (5-6) las versiones de la función de asignación). La firma añadido debe ser similar a la siguiente, donde count es el número de bytes a asignar y placement_params' son los parámetros especificados para la expresión new:

Original:

The versions 1-4) are implicitly declared in each translation unit even if the <new> header is not included. These functions are replaceable: a user-provided non-member function with the same signature replaces the implicit version. At most one replacement may be provided for each of the four implicit allocation functions. Also, program can define class member versions of these functions or define allocation functions with different signatures (except that it is not permitted to replace (5-6) versions of the allocation function). The added signature should look like the following, where count is number of bytes to allocate and placement_params are the parameters supplied to the new expression:

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void* operator new  (size_t count/*, placement_params*/);		for the new version
void* operator new[](size_t count/*, placement_params*/);		for the new[] version

La función de asignación se puede sustituir / sobrecargado de dos maneras:

Original:

The allocation function can be replaced/overloaded in two ways:

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'En el ámbito global': para llamarlo, la firma de las funciones de asignación sobrecargado debe ser visible en el lugar de asignación, salvo implícitamente declaradas funciones predeterminadas de asignación. Esta función de asignación se utiliza para todas las asignaciones con parámetros correspondientes en el programa actual

Original:

in the global scope: in order to call it, the signature of the overloaded allocation functions must be visible at the place of allocation, except for implicitly declared default allocation functions. This allocation function will be used for all allocations with corresponding parameters in the current program

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'En el ámbito local': el operator new sobrecargado debe ser miembro público static function de la clase. Esta función de asignación se utilizará únicamente para la asignación de esa clase particular .

Original:

in the local scope: the overloaded operator new must be static public member function of the class. This allocation function will be used only for allocations of that particular class.

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Durante la compilación, cada expresión new mira el nombre de la función adecuada asignación de una parte en el ámbito de la clase y después de que en el ámbito global. Puede ser instruidos para saltarse el primer paso llamando new como ::new. Tenga en cuenta, que según sobrecarga de reglas, las funciones de asignación declarada en el ámbito de clase oculta todas las funciones de asignación globales. Para obtener más información NJ expresión ver. Nota, que no es posible colocar en función de asignación de un espacio de nombres .

Original:

During compilation, each new expression looks up for appropriate allocation function's name firstly in the class scope and after that in the global scope. It can be instructed to skip the first step by calling new as ::new. Note, that as per sobrecarga de reglas, any allocation functions declared in class scope hides all global allocation functions. For more information see NJ expresión. Note, that it is not possible to place allocation function in a namespace.

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Parámetros

count	-	número de bytes para asignar Original: number of bytes to allocate The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
ptr	-	puntero a un área de memoria para inicializar el objeto a Original: pointer to a memory area to initialize the object at The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Valor de retorno

1-4)

puntero al área de memoria asignada

Original:

pointer to allocated memory area

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5-6) ptr

Excepciones

1-2)

std::bad_alloc lanza en la falta de asignación de memoria

Original:

throws std::bad_alloc on failure to allocate memory

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3-6)

noexcept specification:  

noexcept

  (ya que C + +11)

Ver también

operator delete operator delete[]	funciones desasignación Original: deallocation functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función)
get_new_handler (C++11)	obtiene el nuevo controlador actual Original: obtains the current new handler The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función)
set_new_handler	registra un controlador nuevo Original: registers a new handler The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función)
get_temporary_buffer	Obtiene el almacenamiento sin inicializar Original: obtains uninitialized storage The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función)
malloc	asigna memoria Original: allocates memory The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función)