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std::map - cppreference.com

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Elemento definito nell'header

<map>

template< class Key, class T, class Compare = std::less<Key>, class Allocator = std::allocator<std::pair<const Key, T> > > class map;

std::map è un contenitore ordinato associativo che contiene coppie chiave-valore con chiavi univoche. Le chiavi vengono ordinati utilizzando la funzione di confronto Compare. Operazioni di ricerca, di rimozione, e l'inserimento hanno complessità logaritmica. Le mappe sono generalmente implementati come alberi red-black.

Original:

std::map is a sorted associative container that contains key-value pairs with unique keys. Keys are sorted by using the comparison function Compare. Search, removal, and insertion operations have logarithmic complexity. Maps are usually implemented as alberi red-black.

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std::map soddisfi i requisiti di Container, AllocatorAwareContainer, AssociativeContainer e ReversibleContainer.

Original:

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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]
key_compare Compare [modifica]
allocator_type Allocator [modifica]
reference Allocator::reference (fino al c++11)
value_type& (dal C++11) [modifica]
const_reference Allocator::const_reference (fino al c++11)
const value_type& (dal C++11) [modifica]
pointer Allocator::pointer (fino al c++11)
std::allocator_traits<Allocator>::pointer (dal C++11) [modifica]
const_pointer Allocator::const_pointer (fino al c++11)
std::allocator_traits<Allocator>::const_pointer (dal C++11) [modifica]
iterator BidirectionalIterator [modifica]
const_iterator Iteratore bidirezionale su costanti[modifica]
reverse_iterator std::reverse_iterator<iterator> [modifica]
const_reverse_iterator std::reverse_iterator<const_iterator> [modifica]

Membri classi

confronta gli oggetti di tipo value_type

Original:

compares objects of type value_type

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(classe) [modifica]

Membri funzioni

mihai are mere

costruisce il map
(metodo pubblico) [modifica]
distrugge il 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]

Elemento accesso

Original:

Element access

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(C++11)

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]

Iteratori

Original:

Iterators

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restituisce un iteratore all'inizio

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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]

restituisce un iteratore inverso all'inizio

Original:

returns a reverse iterator to the beginning

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(metodo pubblico) [modifica]

restituisce un iteratore inverso alla fine

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returns a reverse iterator to the end

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(metodo pubblico) [modifica]

Capacità

Original:

Capacity

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verifica se il contenitore è vuoto

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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]

(C++11)

 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

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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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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]

restituisce un iteratore al primo elemento' non inferiore al valore dato

Original:

returns an iterator to the first element not less than the given value

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(metodo pubblico) [modifica]

ritorna un iteratore al primo elemento' maggiore di un certo valore

Original:

returns an iterator to the first element greater than a certain value

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(metodo pubblico) [modifica]

Osservatori

Original:

Observers

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restituisce la funzione che confronta le chiavi

Original:

returns the function that compares keys

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(metodo pubblico) [modifica]

restituisce la funzione che confronta le chiavi in ​​oggetti di tipo value_type

Original:

returns the function that compares keys in objects of type value_type

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(metodo pubblico) [modifica]

Non membri funzioni