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    std::is_destructible, std::is_trivially_destructible, std::is_nothrow_destructible

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    C++
     
    Utilities-Bibliothek
     
    Geben Sie Unterstützung
    Grundtypen
    Original:
    Basic types
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    Grundtypen
    Feste Breite Integer-Typen(C++11)
    Numerische Grenzen
    Original:
    Numeric limits
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    numeric_limits
    C numerische begrenzt Schnittstelle
    Laufzeit-Typinformationen
    Original:
    Runtime type information
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    Exterieur
    Original:
    Type traits
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    Primären Typ Kategorien
    Original:
    Primary type categories
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    is_void(C++11)
    is_array(C++11)
    is_pointer(C++11)
    is_enum(C++11)
    is_union(C++11)
    is_class(C++11)
    is_function(C++11)
    is_reference(C++11)
    is_lvalue_reference(C++11)
    is_rvalue_reference(C++11)
    is_member_pointer(C++11)
    is_member_object_pointer(C++11)
    is_member_function_pointer(C++11)
    Typ Eigenschaften
    Original:
    Type properties
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    is_const(C++11)
    is_volatile(C++11)
    is_pod(C++11)
    is_empty(C++11)
    is_polymorphic(C++11)
    is_abstract(C++11)
    Unterstützte Operationen
    Original:
    Supported operations
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    is_constructible
    is_trivially_constructible
    is_nothrow_constructible    		(C++11)
    (C++11)
    (C++11)
    is_default_constructible
    is_trivially_default_constructible
    is_nothrow_default_constructible    		(C++11)
    (C++11)
    (C++11)
    is_copy_constructible
    is_trivially_copy_constructible
    is_nothrow_copy_constructible    		(C++11)
    (C++11)
    (C++11)
    is_move_constructible
    is_trivially_move_constructible
    is_nothrow_move_constructible    		(C++11)
    (C++11)
    (C++11)
    is_assignable
    is_trivially_assignable
    is_nothrow_assignable    		(C++11)
    (C++11)
    (C++11)
    is_copy_assignable
    is_trivially_copy_assignable
    is_nothrow_copy_assignable    		(C++11)
    (C++11)
    (C++11)
    is_move_assignable
    is_trivially_move_assignable
    is_nothrow_move_assignable    		(C++11)
    (C++11)
    (C++11)
    is_destructible
    is_trivially_destructible
    is_nothrow_destructible    		(C++11)
    (C++11)
    (C++11)
    has_virtual_destructor(C++11)
    Beziehungen und Eigentum Abfragen
    Original:
    Relationships and property queries
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    is_same(C++11)
    is_base_of(C++11)
    is_convertible(C++11)
    alignment_of(C++11)
    rank(C++11)
    extent(C++11)
    Typ Modifikationen
    Original:
    Type modifications
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    Typ Transformationen
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    Type transformations
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    aligned_storage(C++11)
    aligned_union(C++11)
    decay(C++11)
    enable_if(C++11)
    Typ-Trait-Konstanten
    Original:
    Type trait constants
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    integral_constant(C++11)
     
    definiert in Header <type_traits>
    template<class T >
    struct is_destructible;
    		 (1) (seit C++11)
    template<class T >
    struct is_trivially_destructible;
    		 (2) (seit C++11)
    template<class T >
    struct is_nothrow_destructible;
    		 (3) (seit C++11)
    1)
    Wenn eine imaginäre struct enthaltend ein Element vom Typ T eine nicht gelöschte destructor, liefert das Element konstant value gleich true. Für jede andere Art, value ist false .
    Original:
    If an imaginary struct containing a member object of type T has a non-deleted destructor, provides the member constant value equal true. For any other type, value is false.
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    2)
    wie 1), aber der Destruktor nicht aufgerufen sämtliche Aufgaben, die nicht trivial ist .
    Original:
    same as 1), but the destructor does not call any operation that is not trivial.
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    3)
    wie 1), aber der Destruktor noexcept .
    Original:
    same as 1), but the destructor is noexcept.
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    Inhaltsverzeichnis

    Inherited from std::integral_constant

    Member constants

    value
    [statisch]
    true wenn T is destructible, false anders
    Original:
    true if T is destructible, false otherwise
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    (public static Mitglied konstanten)

    Member functions

    operator bool
    wandelt das Objekt bool, gibt value
    Original:
    converts the object to bool, returns value
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    (öffentliche Elementfunktion)

    Member types

    Type
    Original:
    Type
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    		 Definition
    value_typebool
    typestd::integral_constant<bool, value>

    [Bearbeiten]Notes

    Da die C + +-Programm wird ein Destruktor löst eine Ausnahme während Stack Unwinding (die in der Regel nicht vorhergesagt werden kann), sind alle praktischen Destruktoren nicht werfen, auch wenn sie nicht deklariert noexcept. Alle Destruktoren in der C + +-Standard-Bibliothek zu finden sind non-Werfen .
    Original:
    Because the C++ program terminates if a destructor throws an exception during stack unwinding (which usually cannot be predicted), all practical destructors are non-throwing even if they are not declared noexcept. All destructors found in the C++ standard library are non-throwing.
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    [Bearbeiten]Beispiel

    #include <iostream>#include <string>#include <type_traits>struct Foo {std::string str; ~Foo()noexcept{};};struct Bar { ~Bar()=default;};int main(){std::cout<<std::boolalpha<<"std::string is destructible? "<< std::is_destructible<std::string>::value<<'\n'<<"Foo is nothrow destructible? "<< std::is_nothrow_destructible<Foo>::value<<'\n'<<"Bar is trivally destructible? "<< std::is_trivially_destructible<Bar>::value<<'\n';}

    Output: 

    std::string is destructible? true Foo is nothrow destructible? true Bar is trivally destructible? true

    [Bearbeiten]Siehe auch

    (C++11)
    (C++11)
    (C++11)
    prüft, ob ein Typ hat einen Konstruktor für Argumente
    Original:
    checks if a type has a constructor for specific arguments
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    (Klassen-Template)[edit]
    (C++11)
    prüft, ob ein Typ hat einen virtuellen Destruktor
    Original:
    checks if a type has a virtual destructor
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    (Klassen-Template)[edit]
    Von „https://de.cppreference.com/mwiki/index.php?title=cpp/types/is_destructible&oldid=30182“
    close