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std::unordered_map - cppreference.com

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Definido no cabeçalho

<unordered_map>

template< class Key, class T, class Hash = std::hash<Key>, class KeyEqual = std::equal_to<Key>, class Allocator = std::allocator< std::pair<const Key, T> > > class unordered_map;

 (desde C++11)

Mapa desordenada é um recipiente que contém associativa pares chave-valor com chaves únicas. Busca, inserção, remoção e têm complexidade de tempo constante média.

Original:

Unordered map is an associative container that contains key-value pairs with unique keys. Search, insertion, and removal have average constant-time complexity.

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std::unordered_map cumpre os requisitos da Container, AllocatorAwareContainer, UnorderedAssociativeContainer.

Original:

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Tipos de membro

Tipo de membro

Original:

Member type

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 Definition
key_type Key [edit]
mapped_type T [edit]
value_type std::pair<const Key, T> [edit]
size_type

Tipo integral sem sinal (geralmente size_t)

Original:

Unsigned integral type (usually size_t)

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difference_type

tipo inteiro com sinal (geralmente

Original:

Signed integer type (usually

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ptrdiff_t) [edit]
hasher Hash [edit]
key_equal KeyEqual [edit]
allocator_type Allocator [edit]
reference value_type& [edit]
const_reference const value_type& [edit]
pointer std::allocator_traits<Allocator>::pointer [edit]
const_pointer std::allocator_traits<Allocator>::const_pointer [edit]
iterator ForwardIterator [edit]
const_iterator

Iterador constante

Original:

Constant forward iterator

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local_iterator

Um tipo de iterador cuja categoria, valor, diferença, ponteiro tipos de referência and
são os mesmos que iterator. Este iterator
pode ser usado para percorrer um único balde, mas não através baldes

Original:

An iterator type whose category, value, difference, pointer and
reference types are the same as iterator. This iterator
can be used to iterate through a single bucket but not across buckets

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[edit]
const_local_iterator

Um tipo de iterador cuja categoria, valor, diferença, ponteiro tipos de referência and
são os mesmos que const_iterator. Este iterator
pode ser usado para percorrer um único balde, mas não através baldes

Original:

An iterator type whose category, value, difference, pointer and
reference types are the same as const_iterator. This iterator
can be used to iterate through a single bucket but not across buckets

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[edit]

Funções de membro

constrói o unordered_map

Original:

constructs the unordered_map

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(função pública membro) [edit]

destrói o unordered_map

Original:

destructs the unordered_map

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atribui valores para o recipiente

Original:

assigns values to the container

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(função pública membro) [edit]

retorna o alocador de associado

Original:

returns the associated allocator

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Iteradores

Original:

Iterators

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retorna um iterador para o começo

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returns an iterator to the beginning

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retorna um iterador para o fim

Original:

returns an iterator to the end

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Capacidade

Original:

Capacity

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verifica se o recipiente estiver vazio

Original:

checks whether the container is empty

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devolve o número de elementos

Original:

returns the number of elements

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retorna o número máximo possível de elementos

Original:

returns the maximum possible number of elements

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Modificadores

Original:

Modifiers

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apaga o conteúdo

Original:

clears the contents

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(função pública membro) [edit]

insere elementos

Original:

inserts elements

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(função pública membro) [edit]
constructs element in-place
(função pública membro) [edit]

constrói elementos no local usando uma dica

Original:

constructs elements in-place using a hint

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apaga elementos

Original:

erases elements

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(função pública membro) [edit]

Trocar o conteúdo

Original:

swaps the contents

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(função pública membro) [edit]

Pesquisa

Original:

Lookup

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acessar o elemento especificado com verificação de limites

Original:

access specified element with bounds checking

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(função pública membro) [edit]

acessar o elemento especificado

Original:

access specified element

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(função pública membro) [edit]

devolve o número de elementos correspondentes chave específica

Original:

returns the number of elements matching specific key

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(função pública membro) [edit]

encontra elemento com chave específica

Original:

finds element with specific key

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(função pública membro) [edit]

retorna a escala de elementos que combinam com uma tecla específica

Original:

returns range of elements matching a specific key

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(função pública membro) [edit]

Interface de balde

Original:

Bucket interface

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retorna um iterador para o início do balde especificado

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returns an iterator to the beginning of the specified bucket

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retorna um iterador para o final do balde especificado

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returns an iterator to the end of the specified bucket

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retorna o número de baldes

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returns the number of buckets

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(função pública membro) [edit]
returns the maximum number of buckets
(função pública membro) [edit]

devolve o número de elementos no balde específico

Original:

returns the number of elements in specific bucket

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(função pública membro) [edit]

retorna o balde para tecla específica

Original:

returns the bucket for specific key

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Política de hash

Original:

Hash policy

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retorna número médio de elementos por balde

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returns average number of elements per bucket

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(função pública membro) [edit]

gerencia número médio máximo de elementos por balde

Original:

manages maximum average number of elements per bucket

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(função pública membro) [edit]
reserves at least the specified number of buckets.
This regenerates the hash table.
(função pública membro) [edit]

reserva espaço para pelo menos o número especificado de elements.
This regenera a tabela hash .

Original:

reserves space for at least the specified number of elements.
This regenerates the hash table.

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(função pública membro) [edit]

Observadores

Original:

Observers

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retorno da função de hash usado para as chaves

Original:

returns function used to hash the keys

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(função pública membro) [edit]

retorna a função utilizada para comparar as chaves para a igualdade

Original:

returns the function used to compare keys for equality

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(função pública membro) [edit]

Não-membros funções

compara os valores na unordered_map

Original:

compares the values in the unordered_map

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(modelo de função) [edit]

o algoritmo especializado std::swap

Original:

specializes the std::swap algorithm

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(modelo de função) [edit]