std::queue<T,Container>:: front
From cppreference.net
C++
Containers library
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(C++17)
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(C++11)
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(C++26)
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(C++26)
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(C++11)
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| Associative | ||||
| Unordered associative | ||||
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(C++11)
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(C++11)
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(C++11)
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(C++11)
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(C++23)
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(C++23)
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(C++23)
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(C++23)
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| Views | ||||
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(C++20)
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(C++23)
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| Tables | ||||
| Iterator invalidation | ||||
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| Non-member function table |
std::queue
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| Element access | ||||
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queue::front
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| Capacity | ||||
| Modifiers | ||||
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(C++23)
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(C++11)
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(C++11)
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(C++11)
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(C++11)
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(C++23)
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| Deduction guides (C++17) |
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reference front
(
)
;
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const_reference front
(
)
const
;
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返回队列中首个元素的引用。该元素将是调用 pop() 时第一个被移除的元素。实际上调用的是 c. front ( ) 。
目录 |
参数
(无)
返回值
引用第一个元素。
复杂度
常量。
参见
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访问末尾元素
(公开成员函数) |
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移除首端元素
(公开成员函数) |