Varianti

    std::map::at

    Da cppreference.com.

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    <metanoindex/>

     
    C++
     
    Contenitori libreria
     
    std::map
    Membri funzioni
    Original:
    Member functions
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    map::map
    map::~map
    map::operator=
    map::get_allocator
    Elemento accesso
    Original:
    Element access
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    map::at
    map::operator[]
    Iteratori
    Original:
    Iterators
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    map::begin
    map::cbegin
    (C++11)
    map::end
    map::cend
    (C++11)
    map::rbegin
    map::crbegin
    (C++11)
    map::rend
    map::crend
    (C++11)
    Capacità
    Original:
    Capacity
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    map::empty
    map::size
    map::max_size
    Modificatori
    Original:
    Modifiers
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    map::clear
    map::insert
    map::emplace(C++11)
    map::emplace_hint(C++11)
    map::erase
    map::swap
    Lookup
    Original:
    Lookup
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    map::count
    map::find
    map::equal_range
    map::lower_bound
    map::upper_bound
    Osservatori
    Original:
    Observers
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    map::key_comp
    map::value_comp
     
    <tbody> </tbody>
    T& at( const Key& key );
    		 (1) (dal C++11)
    const T & at( const Key& key ) const;
    		 (2) (dal C++11)
    Restituisce un riferimento al valore mappato dell'elemento con tasto equivalente a key. Se tale elemento non esiste, un'eccezione di tipo std::out_of_range viene gettato.
    Original:
    Returns a reference to the mapped value of the element with key equivalent to key. If no such element exists, an exception of type std::out_of_range is thrown.
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    Parametri

    key -
    la chiave dell'elemento da trovare
    Original:
    the key of the element to find
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    Valore di ritorno

    Riferimento al valore mappato dell'elemento richiesto
    Original:
    Reference to the mapped value of the requested element
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    Eccezioni

    std::out_of_range se il contenitore non ha un elemento con la key specificato
    Original:
    std::out_of_range if the container does not have an element with the specified key
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    Complessità

    Logarithmic in the size of the container.

    Vedi anche
    accedere elemento specificato
    Original:
    access specified element
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