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std::uninitialized_fill_n

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< cpp‎ | memory

 
 
 
動的なメモリ管理
低レベルのメモリ管理
アロケータ
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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)
ストレージを初期化されていない
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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
スマートポインタ
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Smart pointers
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unique_ptr(C++11)
shared_ptr(C++11)
weak_ptr(C++11)
auto_ptr(廃止予定)
owner_less(C++11)
enable_shared_from_this(C++11)
bad_weak_ptr(C++11)
default_delete(C++11)
ガベージコレクションをサポートしています
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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)
その他
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Miscellaneous
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pointer_traits(C++11)
addressof(C++11)
align(C++11)
Cライブラリ
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C Library
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Defined in header <memory>
template< class ForwardIt, class Size, class T >
void uninitialized_fill_n( ForwardIt first, Size count, const T& value )

Copies the given value value to the first count elements in an uninitialized memory area beginning at first. The elements in the uninitialized area are constructed using copy constructor.

目次

[編集] パラメータ

first - the beginning of the range of the elements to initialize
count - number of elements to construct
value -
で要素を作成するための値
Original:
the value to construct the elements with
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型の要件
-
ForwardItForwardIterator

の要求を満足しなければなりません。

[編集] 値を返します

コピーされた最後の要素過去の要素を指すイテレータ.
Original:
Iterator to the element past the last element copied.
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[編集] 複雑

countのリニア
Original:
Linear in count
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[編集] 可能な実装

template< class ForwardIt, class Size, class T >
void uninitialized_fill_n(ForwardIt first, Size count
                          const T& value)
{
    typedef typename std::iterator_traits<ForwardIt>::value_type Value;
    for (; count > 0; ++first, --count) {
        ::new (static_cast<void*>(&*first)) Value(value);
    }
    return first;
}

[編集]

[編集] も参照してください

メモリの初期化されていない領域にオブジェクトをコピーします
Original:
copies an object to an uninitialized area of memory
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(関数テンプレート) [edit]