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std::unordered_set::erase - cppreference.com

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iterator erase( const_iterator position );

(1) (dal C++11)

iterator erase( const_iterator first, const_iterator last );

(2) (dal C++11)

size_type erase( const key_type& key );

(3) (dal C++11)

Rimuove gli elementi specificati dal contenitore.

Original:

Removes specified elements from the container.

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1)

Rimuove l'elemento in pos.

Original:

Removes the element at pos.

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2)

Rimuove gli elementi della gamma [first; last).

Original:

Removes the elements in the range [first; last).

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3)

Rimuove tutti gli elementi con il key valore della chiave

Original:

Removes all elements with the key value key

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References and iterators to the erased elements are invalidated. Other iterators and references are not invalidated.

Parametri

pos -

iteratore all'elemento da rimuovere

Original:

iterator to the element to remove

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first, last -

intervallo di elementi da rimuovere

Original:

range of elements to remove

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key -

valore chiave degli elementi da rimuovere

Original:

key value of the elements to remove

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Valore di ritorno

1-2)

Iterator dopo l'ultimo elemento rimosso.

Original:

Iterator following the last removed element.

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3)

Numero di elementi rimossi.

Original:

Number of elements removed.

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Complessità

1) Average case: constant, worst case: a.size()

2) Average case: std::distance(first, last), worst case: a.size()

3) Average case: a.count(key), worst case: a.size()

Vedi anche

cancella il contenuto

Original:

clears the contents

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