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std::map::at

提供: cppreference.com
< cpp‎ | container‎ | map

 
 
 
std::map
メンバ関数
Original:
Member functions
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map::map
map::~map
map::operator=
map::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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map::at
map::operator[]
イテレータ
Original:
Iterators
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map::begin
map::cbegin

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

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

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

(C++11)
容量
Original:
Capacity
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map::empty
map::size
map::max_size
修飾子
Original:
Modifiers
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map::clear
map::insert
map::emplace(C++11)
map::emplace_hint(C++11)
map::erase
map::swap
ルック
Original:
Lookup
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map::count
map::find
map::equal_range
map::lower_bound
map::upper_bound
オブザーバー
Original:
Observers
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map::key_comp
map::value_comp
 
T& at( const Key& key );
(1) (C + + 11以来)
const T & at( const Key& key ) const;
(2) (C + + 11以来)
keyにキーボードショートカットを持つ要素のマッピングされた値への参照を返します。そのような要素が存在しない場合は、タイプstd::out_of_rangeの例外がスローされます.
Original:
Returns a reference to the mapped value of the element with key equivalent to key. If no such element exists, an exception of type std::out_of_range is thrown.
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目次

[編集] パラメータ

key -
検索する要素のキー
Original:
the key of the element to find
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[編集] 値を返します

要求された要素のマッピングされた値への参照
Original:
Reference to the mapped value of the requested element
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[編集] 例外

std::out_of_rangeコンテナが指定key持つ要素を持っていない場合
Original:
std::out_of_range if the container does not have an element with the specified key
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[編集] 複雑

Logarithmic in the size of the container.

[編集] も参照してください

指定された要素にアクセスします
Original:
access specified element
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(パブリックメンバ関数) [edit]