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    std::get(std::array)

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    <metanoindex/>

     
    C++
     
    Container-Bibliothek
     
    std::array
    Member-Funktionen
    Original:
    Member functions
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    Elementzugriff zerstört
    Original:
    Element access
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    array::at
    array::operator[]
    array::front
    array::back
    array::data
    Iteratoren
    Original:
    Iterators
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    array::begin
    array::cbegin
    array::end
    array::cend
    array::rbegin
    array::crbegin
    array::rend
    array::crend
    Kapazität
    Original:
    Capacity
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    array::empty
    array::size
    array::max_size
    Modifiers
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    Modifiers
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    array::fill
    array::swap
    Non-Member-Funktionen
    Original:
    Non-member functions
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    get
    swap
    Helper-Klassen
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    Helper classes
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    tuple_size
    tuple_element
     
    <tbody> </tbody>
    template<size_t I, class T, size_t N > T& get( array<T,N>& a );
    		 (1) (seit C++11)
    template<size_t I, class T, size_t N > T&& get( array<T,N>&& a );
    		 (2) (seit C++11)
    template<size_t I, class T, size_t N > const T& get( const array<T,N>& a );
    		 (3) (seit C++11)
    Extrahiert die Ith element aus dem Array .
    Original:
    Extracts the Ith element element from the array.
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    I muss ein Integer-Wert im Bereich [0, N) sein. Dies wird bei der Kompilierung durchgesetzt zu at() entgegengesetzt oder operator[]() .
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    I must be an integer value in range [0, N). This is enforced at compile time as opposed to at() or operator[]().
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    Parameter

    a -
    Array, dessen Inhalt zu extrahieren
    Original:
    array whose contents to extract
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    Rückgabewert

    1)

    Verweis auf die Ith Element a .
    Original:
    Reference to the Ith element of a.
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    2)

    Rvalue Verweis auf das Element Ith a, sofern das Element der L-Wert-Referenz-Typ, wobei in diesem Fall L-Wert Verweis zurückgegeben .
    Original:
    Rvalue reference to the Ith element of a, unless the element is of lvalue reference type, in which case lvalue reference is returned.
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    3)

    Const Verweis auf die Ith Element a .
    Original:
    Const reference to the Ith element of a.
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    Ausnahmen

    noexcept specification:  
    <tbody> </tbody>
    noexcept
      (seit C++11)

    Beispiel

    #include <iostream>
#include <array>

int main()
{
    std::array<int, 3> arr;
    
    // set values:
    std::get<0>(arr) = 1;
    std::get<1>(arr) = 2;
    std::get<2>(arr) = 3;
    
    // get values:
    std::cout << "(" << std::get<0>(arr) << ", " << std::get<1>(arr)
              << ", " << std::get<2>(arr) << ")\n";
}

    Output: 

    (1, 2, 3)

    Siehe auch
    Zugriff auf angegebene Element
    Original:
    access specified element
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    (öffentliche Elementfunktion) [edit]
    Zugriff auf angegebene Element mit Überprüfung von Grenzen
    Original:
    access specified element with bounds checking
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    (öffentliche Elementfunktion) [edit]
    Zugriff auf das angegebene Element des Tupels
    Original:
    tuple accesses specified element
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    (Funktions-Template) [edit]
    (C++11)
    greift ein Element eines pair
    Original:
    accesses an element of a pair
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    (Funktions-Template) [edit]