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std::vector::shrink_to_fit

提供: cppreference.com
< cpp‎ | container‎ | vector

 
 
 
std::vector
メンバ関数
Original:
Member functions
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vector::vector
vector::~vector
vector::operator=
vector::assign
vector::get_allocator
要素アクセスの循環参照を解除するために使用されている
Original:
Element access
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vector::at
vector::operator[]
vector::front
vector::back
vector::data(C++11)
イテレータ
Original:
Iterators
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vector::begin
vector::cbegin

(C++11)
vector::end
vector::cend

(C++11)
vector::rbegin
vector::crbegin

(C++11)
vector::rend
vector::crend

(C++11)
容量
Original:
Capacity
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vector::empty
vector::size
vector::max_size
vector::reserve
vector::capacity
vector::shrink_to_fit(C++11)
修飾子
Original:
Modifiers
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vector::clear
vector::insert
vector::emplace(C++11)
vector::erase
vector::push_back
vector::emplace_back(C++11)
vector::pop_back
vector::resize
vector::swap
 
void shrink_to_fit();
(C++11およびそれ以降)
未使用容量の要求が除去.
Original:
Requests the removal of unused capacity.
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それはcapacitysizeを削減するための拘束力のない要求です。要求が満たされているなら、それは実装に依存します.
Original:
It is a non-binding request to reduce capacity to size. It depends on the implementation if the request is fulfilled.
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目次

[編集] パラメータ

(なし)
Original:
(none)
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[編集] 値を返します

(なし)
Original:
(none)
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[編集] 複雑

定数
Original:
Constant
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Example

#include <iostream>
#include <vector>
int main()
{
    std::vector<int> v;
    std::cout << "Default-constructd capacity is " << v.capacity() << '\n';
    v.resize(100);
    std::cout << "Capacity of a 100-element vector is " << v.capacity() << '\n';
    v.clear();
    std::cout << "Capacity after clear() is " << v.capacity() << '\n';
    v.shrink_to_fit();
    std::cout << "Capacity after shrink_to_fit() is " << v.capacity() << '\n';
}

Output:

Default-constructd capacity is 0
Capacity of a 100-element vector is 100
Capacity after clear() is 100
Capacity after shrink_to_fit() is 0

[編集] も参照してください

要素数を返します
Original:
returns the number of elements
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(パブリックメンバ関数) [edit]
現在割り当てられているストレージに保持することができる要素の数を返します
Original:
returns the number of elements that can be held in currently allocated storage
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(パブリックメンバ関数) [edit]