Namespace
Varianti

std::unordered_map

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C++
 
Contenitori libreria
 
std::unordered_map
Membri funzioni
Original:
Member functions
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unordered_map::unordered_map
unordered_map::~unordered_map
unordered_map::operator=
unordered_map::get_allocator
Iteratori
Original:
Iterators
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unordered_map::begin
unordered_map::cbegin
unordered_map::end
unordered_map::cend
Capacità
Original:
Capacity
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unordered_map::erase
unordered_map::size
unordered_map::max_size
Modificatori
Original:
Modifiers
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unordered_map::clear
unordered_map::insert
unordered_map::emplace
unordered_map::emplace_hint
unordered_map::erase
unordered_map::swap
Lookup
Original:
Lookup
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unordered_map::count
unordered_map::find
unordered_map::equal_range
Benna interfaccia
Original:
Bucket interface
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unordered_map::begin2
unordered_map::end2
unordered_map::bucket_count
unordered_map::max_bucket_count
unordered_map::bucket_size
unordered_map::bucket
Politica di Hash
Original:
Hash policy
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unordered_map::load_factor
unordered_map::max_load_factor
unordered_map::rehash
unordered_map::reserve
Osservatori
Original:
Observers
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unordered_map::hash_function
unordered_map::key_eq
 
Elemento definito nell'header <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;
 (dal C++11)

La mappa non ordinata è un contenitore associativo che contiene coppie chiave-valore con chiavi univoche. Ricerca, inserimento e rimozione hanno in media complessità in tempo costante.

std::unordered_map soddisfi i requisiti di Container, AllocatorAwareContainer, UnorderedAssociativeContainer.
Original:
std::unordered_map meets the requirements of Container, AllocatorAwareContainer, UnorderedAssociativeContainer.
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Indice

[modifica] Membri tipi

Membro tipo
Original:
Member type
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 Definition
key_type Key [modifica]
mapped_type T [modifica]
value_type std::pair<const Key, T> [modifica]
size_type Tipo intero senza segno (generalmente size_t)[modifica]
difference_type Tipo intero con segno (generalmente ptrdiff_t) [modifica]
hasher Hash [modifica]
key_equal KeyEqual [modifica]
allocator_type Allocator [modifica]
reference value_type& [modifica]
const_reference const value_type& [modifica]
pointer std::allocator_traits<Allocator>::pointer [modifica]
const_pointer std::allocator_traits<Allocator>::const_pointer [modifica]
iterator ForwardIterator [modifica]
const_iterator Iteratore in avanti su costanti[modifica]
local_iterator
Un tipo di iteratore cui categoria, il valore, la differenza, puntatore tipi di riferimento and
sono gli stessi iterator. Questo iterator
può essere utilizzato per scorrere un secchio unico, ma non tra secchi
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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[modifica]
const_local_iterator
Un tipo di iteratore cui categoria, il valore, la differenza, puntatore tipi di riferimento and
sono gli stessi const_iterator. Questo iterator
può essere utilizzato per scorrere un secchio unico, ma non tra secchi
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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[modifica]

[modifica] Membri funzioni

mihai are mere
costruisce il unordered_map
(metodo pubblico) [modifica]
distrugge il unordered_map
(metodo pubblico) [modifica]
assegna valori al contenitore
Original:
assigns values to the container
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(metodo pubblico) [modifica]
restituisce l'allocatore associato
Original:
returns the associated allocator
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(metodo pubblico) [modifica]
Iteratori
Original:
Iterators
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restituisce un iteratore all'inizio
Original:
returns an iterator to the beginning
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(metodo pubblico) [modifica]

restituisce un iteratore fino alla fine
Original:
returns an iterator to the end
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(metodo pubblico) [modifica]
Capacità
Original:
Capacity
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verifica se il contenitore è vuoto
Original:
checks whether the container is empty
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(metodo pubblico) [modifica]
restituisce il numero di elementi
Original:
returns the number of elements
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(metodo pubblico) [modifica]
restituisce il massimo numero possibile di elementi
Original:
returns the maximum possible number of elements
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(metodo pubblico) [modifica]
Modificatori
Original:
Modifiers
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cancella il contenuto
Original:
clears the contents
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(metodo pubblico) [modifica]
inserti di elementi
Original:
inserts elements
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(metodo pubblico) [modifica]
constructs element in-place
(metodo pubblico) [modifica]
costruisce elementi in-place con un suggerimento
Original:
constructs elements in-place using a hint
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(metodo pubblico) [modifica]
cancella elementi
Original:
erases elements
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(metodo pubblico) [modifica]
swap il contenuto
Original:
swaps the contents
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(metodo pubblico) [modifica]
Lookup
Original:
Lookup
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accedere elemento specificato con verifica dei limiti
Original:
access specified element with bounds checking
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(metodo pubblico) [modifica]
accedere elemento specificato
Original:
access specified element
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(metodo pubblico) [modifica]
restituisce il numero di elementi corrispondenti chiave specifica
Original:
returns the number of elements matching specific key
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(metodo pubblico) [modifica]
trova elemento con chiave specifica
Original:
finds element with specific key
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(metodo pubblico) [modifica]
Benna interfaccia
Original:
Bucket interface
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restituisce un iteratore all'inizio della benna specificato
Original:
returns an iterator to the beginning of the specified bucket
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(metodo pubblico) [modifica]
ritorna un iteratore alla fine della benna specificato
Original:
returns an iterator to the end of the specified bucket
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(metodo pubblico) [modifica]
restituisce il numero di secchi
Original:
returns the number of buckets
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(metodo pubblico) [modifica]
returns the maximum number of buckets
(metodo pubblico) [modifica]
restituisce il numero di elementi in bucket specifico
Original:
returns the number of elements in specific bucket
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(metodo pubblico) [modifica]
restituisce la benna per la chiave specifica
Original:
returns the bucket for specific key
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(metodo pubblico) [modifica]
Politica di Hash
Original:
Hash policy
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restituisce il numero medio di elementi per secchio
Original:
returns average number of elements per bucket
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(metodo pubblico) [modifica]
gestisce massimo numero medio di elementi per secchio
Original:
manages maximum average number of elements per bucket
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(metodo pubblico) [modifica]
reserves at least the specified number of buckets.
This regenerates the hash table.
(metodo pubblico) [modifica]
riserva spazio per almeno il numero specificato di elements.
This rigenera la tabella di hash .
Original:
reserves space for at least the specified number of elements.
This regenerates the hash table.
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(metodo pubblico) [modifica]
Osservatori
Original:
Observers
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torna funzione hash utilizzata per le chiavi
Original:
returns function used to hash the keys
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(metodo pubblico) [modifica]
restituisce la funzione utilizzata per confrontare le chiavi per l'uguaglianza
Original:
returns the function used to compare keys for equality
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(metodo pubblico) [modifica]

[modifica] Non membri funzioni
confronta i valori del unordered_map
Original:
compares the values in the unordered_map
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(funzione di modello) [modifica]
specializzata l'algoritmo std::swap
Original:
specializes the std::swap algorithm
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(funzione di modello) [modifica]
Estratto da "https://it.cppreference.com/mwiki/index.php?title=cpp/container/unordered_map&oldid=27442"