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    std::get_temporary_buffer

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    <metanoindex/>

     
    C++
     
    Utilities-Bibliothek
     
    Dynamische Speicherverwaltung
    Low-Level-Speicherverwaltung
    Zuweiser
    Original:
    Allocators
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    allocator
    allocator_traits(C++11)
    allocator_arg_t(C++11)
    allocator_arg(C++11)
    uses_allocator(C++11)
    scoped_allocator_adaptor(C++11)
    Initialisierter Speicher
    Original:
    Uninitialized storage
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    uninitialized_copy
    uninitialized_copy_n(C++11)
    uninitialized_fill
    uninitialized_fill_n
    raw_storage_iterator
    get_temporary_buffer
    return_temporary_buffer
    Intelligente Zeiger
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    Smart pointers
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    unique_ptr(C++11)
    shared_ptr(C++11)
    weak_ptr(C++11)
    auto_ptr(veraltet)
    owner_less(C++11)
    enable_shared_from_this(C++11)
    bad_weak_ptr(C++11)
    default_delete(C++11)
    Garbage Collection Unterstützung
    Original:
    Garbage collection support
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    declare_reachable(C++11)
    undeclare_reachable(C++11)
    declare_no_pointers(C++11)
    undeclare_no_pointers(C++11)
    pointer_safety(C++11)
    get_pointer_safety(C++11)
    Verschiedenes
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    Miscellaneous
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    pointer_traits(C++11)
    addressof(C++11)
    align(C++11)
    C-Bibliothek
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    C Library
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    <tbody> </tbody>
    definiert in Header <memory>
    template< class T > std::pair< T*, std::ptrdiff_t > get_temporary_buffer( std::ptrdiff_t count )
    Weist Speicher ausreichen, um bis zu count angrenzenden Objekte vom Typ T. Wenn es nicht genügend Speicher für alle count Objekte, weist weniger als count, wenn möglich .
    Original:
    Allocates storage sufficient to store up to count adjacent objects of type T. If there is insufficient memory for all count objects, allocates less than count, if possible.
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    Parameter

    count -
    die Anzahl der Objekte zu verteilen
    Original:
    the number of objects to allocate
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    Rückgabewert

    Ein std::pair einen Zeiger auf den Beginn des zugewiesenen Speicher und der Anzahl von Objekten, die in der Speichereinheit, die tatsächlich zugewiesen war passen (Null sein kann) .
    Original:
    An std::pair holding a pointer to the beginning of the allocated storage and the number of objects that fit in the storage that was actually allocated (may be zero).
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    Ausnahmen

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

    Beispiel

    [edit]
    #include <algorithm>
#include <iostream>
#include <memory>
#include <string>

int main()
{
    const std::string s[] = {"string", "1", "test", "..."};
    std::string* p = std::get_temporary_buffer<std::string>(4).first;

    std::copy(std::begin(s), std::end(s),
              std::raw_storage_iterator<std::string*, std::string>(p));

    for (std::string* i = p; i != p+4; ++i) {
        std::cout << *i << '\n';
        i->~basic_string<char>();
    }
    std::return_temporary_buffer(p);
}

    Output: 

    string
1
test
...

    Siehe auch

    		 gibt den nicht initialisierten, temporären Speicher (get_temporary_buffer) frei
    (Funktions-Template) [edit]