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    std::remove_extent

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    C++
     
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    Feste Breite Integer-Typen(C++11)
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    rank(C++11)
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    integral_constant(C++11)
     
    definiert in Header <type_traits>
    template<class T >
    struct remove_extent;
    		(seit C++11)
    Wenn T ein Array von irgendeiner Art X ist, liefert das Element typedef type gleich X, sonst ist typeT. Beachten Sie, dass, wenn T ein mehrdimensionales Array, nur die erste Dimension entfernt wird .
    Original:
    If T is an array of some type X, provides the member typedef type equal to X, otherwise type is T. Note that if T is a multidimensional array, only the first dimension is removed.
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    Inhaltsverzeichnis

    [Bearbeiten]Mitglied Typen

    Name
    Original:
    Name
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    		 Definition
    type
    der Typ des Elements der T
    Original:
    the type of the element of T
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    [Bearbeiten]Mögliche Implementierung

    template<class T>struct remove_extent {typedef T type;};   template<class T>struct remove_extent<T[]>{typedef T type;};   template<class T, std::size_t N>struct remove_extent<T[N]>{typedef T type;};

    [Bearbeiten]Beispiel

    #include <iostream>#include <iterator>#include <algorithm>#include <type_traits>   template<class A>typenamestd::enable_if<std::rank<A>::value==1>::type print_1d(const A& a){ copy(a, a+std::extent<A>::value, std::ostream_iterator<typename std::remove_extent<A>::type>(std::cout, " "));std::cout<<'\n';}   int main(){int a[][3]={{1,2,3},{4,5,6}};// print_1d(a); // compile-time error print_1d(a[1]);}

    Output: 

    4 5 6

    [Bearbeiten]Siehe auch

    (C++11)
    prüft, ob ein Typ ist ein Array-Typ
    Original:
    checks if a type is an array type
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    (Klassen-Template)[edit]
    (C++11)
    ermittelt die Anzahl der Dimensionen eines Array-Typ
    Original:
    obtains the number of dimensions of an array type
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    (Klassen-Template)[edit]
    (C++11)
    erhält die Größe eines Array-Typs entlang einer bestimmten Dimension
    Original:
    obtains the size of an array type along a specified dimension
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    (Klassen-Template)[edit]
    (C++11)
    		 removes all extents from the given array type
    (Klassen-Template)[edit]
    Von „https://de.cppreference.com/mwiki/index.php?title=cpp/types/remove_extent&oldid=30355“
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