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std::unordered_set::reserve

提供: cppreference.com

 
 
 
のstd :: unordered_set
メンバ関数
Original:
Member functions
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unordered_set::unordered_set
unordered_set::~unordered_set
unordered_set::operator=
unordered_set::get_allocator
イテレータ
Original:
Iterators
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unordered_set::begin
unordered_set::cbegin
unordered_set::end
unordered_set::cend
容量
Original:
Capacity
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unordered_set::erase
unordered_set::size
unordered_set::max_size
修飾子
Original:
Modifiers
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unordered_set::clear
unordered_set::insert
unordered_set::emplace
unordered_set::emplace_hint
unordered_set::erase
unordered_set::swap
ルック
Original:
Lookup
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unordered_set::count
unordered_set::find
unordered_set::equal_range
バケットインターフェイス
Original:
Bucket interface
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unordered_set::begin2
unordered_set::end2
unordered_set::bucket_count
unordered_set::max_bucket_count
unordered_set::bucket_size
unordered_set::bucket
ハッシュポリシー
Original:
Hash policy
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unordered_set::load_factor
unordered_set::max_load_factor
unordered_set::rehash
unordered_set::reserve
オブザーバー
Original:
Observers
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unordered_set::hash_function
unordered_set::key_eq
 
void reserve( size_type count );
(C + + 11以来)
最大負荷率とrehashes容器を超えることなく、少なくともcount要素を収容するために必要な数にバケットの数を設定します、すなわち、バケットの総数が変更されたことを考えると、適切なバケットに要素を配置します。効果的にrehash(std::ceil(count / max_load_factor()))呼び出し.
Original:
Sets the number of buckets to the number needed to accomodate at least count elements without exceeding maximum load factor and rehashes the container, i.e. puts the elements into appropriate buckets considering that total number of buckets has changed. Effectively calls rehash(std::ceil(count / max_load_factor())).
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目次

[編集] パラメータ

count -
コンテナの新しい能力
Original:
new capacity of the container
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[編集] 値を返します

(なし)
Original:
(none)
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[編集] 複雑

容器の大きさに比例平均的な場合、最悪のケースの二次.
Original:
average case linear in the size of the container, worst case quadratic.
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[編集] も参照してください

reserves at least the specified number of buckets.
This regenerates the hash table.
(パブリックメンバ関数) [edit]