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std::vector

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C++
 
Biblioteca de contenedores
 
std::vector
Las funciones miembro
Original:
Member functions
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vector::vector
vector::~vector
vector::operator=
vector::assign
vector::get_allocator
Elemento acceso
Original:
Element access
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vector::at
vector::operator[]
vector::front
vector::back
vector::data(C++11)
Los iteradores
Original:
Iterators
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vector::begin
vector::cbegin
(C++11)
vector::end
vector::cend
(C++11)
vector::rbegin
vector::crbegin
(C++11)
vector::rend
vector::crend
(C++11)
Capacidad
Original:
Capacity
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vector::empty
vector::size
vector::max_size
vector::reserve
vector::capacity
vector::shrink_to_fit(C++11)
Modificadores
Original:
Modifiers
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vector::clear
vector::insert
vector::emplace(C++11)
vector::erase
vector::push_back
vector::emplace_back(C++11)
vector::pop_back
vector::resize
vector::swap
 
Defined in header <vector>
template<

    class T,
    class Allocator = std::allocator<T>

> class vector;
std::vector es un contenedor que encapsula secuencia de matrices dinámicas tamaño .
Original:
std::vector is a sequence container that encapsulates dynamic size arrays.
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Los elementos se almacenan de forma contigua, lo que significa que los elementos no se puede acceder sólo a través de los iteradores, pero también con los desplazamientos en punteros regulares a los elementos. Esto significa que un puntero a un elemento de un vector se puede hacer pasar a cualquier función que espera un puntero a un elemento de una matriz .
Original:
The elements are stored contiguously, which means that elements can be accessed not only through iterators, but also using offsets on regular pointers to elements. This means that a pointer to an element of a vector may be passed to any function that expects a pointer to an element of an array.
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El almacenamiento del vector se maneja automáticamente, siendo expandido y contraído, según sea necesario. Vectores suelen ocupar más espacio que las matrices estáticas, ya que se asigna más memoria para manejar el crecimiento futuro. De esta manera un vector no necesita reasignar cada vez que se inserta un elemento, pero sólo cuando la memoria adicional se agota. La cantidad total de memoria asignada puede ser consultada mediante la función capacity(). Memoria adicional se puede devolver al sistema a través de una llamada a shrink_to_fit() .
Original:
The storage of the vector is handled automatically, being expanded and contracted as needed. Vectors usually occupy more space than static arrays, because more memory is allocated to handle future growth. This way a vector does not need to reallocate each time an element is inserted, but only when the additional memory is exhausted. The total amount of allocated memory can be queried using capacity() function. Extra memory can be returned to the system via a call to shrink_to_fit().
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Las reasignaciones suelen ser operaciones costosas en términos de rendimiento. reserve() función puede ser utilizada para eliminar las reasignaciones si el número de elementos que se conoce de antemano .
Original:
Reallocations are usually costly operations in terms of performance. reserve() function can be used to eliminate reallocations if the number of elements is known beforehand.
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La complejidad (eficacia) de las operaciones comunes de vectores es el siguiente:
Original:
The complexity (efficiency) of common operations on vectors is as follows:
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  • Acceso aleatorio - O(1) constante
    Original:
    Random access - constant O(1)
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  • Inserción o extracción de elementos al final - O(1) constante amortizado
    Original:
    Insertion or removal of elements at the end - amortized constant O(1)
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  • La inserción o la eliminación de los elementos - lineal en distancia hasta el extremo de la O(n) vector
    Original:
    Insertion or removal of elements - linear in distance to the end of the vector O(n)
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std::vector cumple los requisitos de Container, AllocatorAwareContainer, SequenceContainer y ReversibleContainer .
Original:
std::vector meets the requirements of Container, AllocatorAwareContainer, SequenceContainer and ReversibleContainer.
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Contenido

[editar] Especializaciones

La biblioteca estándar proporciona una especialización de std::vector para la bool tipo, que está optimizado para la eficiencia del espacio .
Original:
The standard library provides a specialization of std::vector for the type bool, which is optimized for space efficiency.
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eficiente con el espacio bitset dinámico
Original:
space-efficient dynamic bitset
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(clase de plantilla) [edit]

[editar] Tipos de miembros

Miembro de tipo
Original:
Member type
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 Definition
value_type T [edit]
allocator_type Allocator [edit]
size_type
Tipo entero sin signo (por lo general size_t)
Original:
Unsigned integral type (usually size_t)
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[edit]
difference_type Signed integer type (usually ptrdiff_t) [edit]
reference Allocator::reference (hasta C++11)
value_type& (desde C++11) [edit]
const_reference Allocator::const_reference (hasta C++11)
const value_type& (desde C++11) [edit]
pointer Allocator::pointer (hasta C++11)
std::allocator_traits<Allocator>::pointer (desde C++11) [edit]
const_pointer Allocator::const_pointer (hasta C++11)
std::allocator_traits<Allocator>::const_pointer (desde C++11) [edit]
iterator RandomAccessIterator [edit]
const_iterator
Iterador constante de acceso aleatorio
Original:
Constant random access iterator
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[edit]
reverse_iterator std::reverse_iterator<iterator> [edit]
const_reverse_iterator std::reverse_iterator<const_iterator> [edit]

[editar] Las funciones miembro
construye el vector
Original:
constructs the vector
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(miembro público función) [edit]
destructs the vector
(miembro público función) [edit]
asigna valores para el contenedor
Original:
assigns values to the container
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(miembro público función) [edit]
asigna valores para el contenedor
Original:
assigns values to the container
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(miembro público función) [edit]
devuelve el asignador asociado
Original:
returns the associated allocator
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(miembro público función) [edit]
Elemento acceso
Original:
Element access
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acceder al elemento especificado con comprobación de límites
Original:
access specified element with bounds checking
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(miembro público función) [edit]
acceder al elemento especificado
Original:
access specified element
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(miembro público función) [edit]
acceso al primer elemento
Original:
access the first element
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(miembro público función) [edit]
access the last element
(miembro público función) [edit]
(C++11)
dirigir el acceso a la matriz subyacente
Original:
direct access to the underlying array
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(miembro público función) [edit]
Los iteradores
Original:
Iterators
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devuelve un iterador al principio
Original:
returns an iterator to the beginning
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(miembro público función) [edit]

devuelve un iterador hasta el final
Original:
returns an iterator to the end
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(miembro público función) [edit]

devuelve un iterador inverso al principio
Original:
returns a reverse iterator to the beginning
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(miembro público función) [edit]

devuelve un iterador inverso hasta el final
Original:
returns a reverse iterator to the end
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(miembro público función) [edit]
Capacidad
Original:
Capacity
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comprueba si el recipiente está vacío
Original:
checks whether the container is empty
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(miembro público función) [edit]
devuelve el número de elementos
Original:
returns the number of elements
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(miembro público función) [edit]
devuelve el número máximo posible de elementos
Original:
returns the maximum possible number of elements
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(miembro público función) [edit]
reservas de almacenamiento
Original:
reserves storage
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(miembro público función) [edit]
devuelve el número de elementos que se pueden almacenar en el almacenamiento asignado actualmente
Original:
returns the number of elements that can be held in currently allocated storage
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(miembro público función) [edit]
(C++11)
reduce el uso de memoria por la liberación de memoria no utilizada
Original:
reduces memory usage by freeing unused memory
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(miembro público función) [edit]
Modificadores
Original:
Modifiers
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borra el contenido
Original:
clears the contents
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(miembro público función) [edit]
Inserta elementos
Original:
inserts elements
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(miembro público función) [edit]
(C++11)
 constructs element in-place
(miembro público función) [edit]
borra elementos
Original:
erases elements
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(miembro público función) [edit]
agrega elementos al final
Original:
adds elements to the end
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(miembro público función) [edit]
(C++11)
construye elementos en lugar de al final
Original:
constructs elements in-place at the end
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(miembro público función) [edit]
elimina el último elemento
Original:
removes the last element
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(miembro público función) [edit]
changes the number of elements stored
(miembro público función) [edit]
intercambia los contenidos
Original:
swaps the contents
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(miembro público función) [edit]

[editar] Terceros funciones
lexicográficamente compara los valores del vector
Original:
lexicographically compares the values in the vector
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(función de plantilla) [edit]
el algoritmo se especializa std::swap
Original:
specializes the std::swap algorithm
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(función de plantilla) [edit]
Obtenido de «http://es.cppreference.com/mwiki/index.php?title=cpp/container/vector&oldid=32110»