std::queue<T,Container>:: front
From cppreference.net
C++
Containers library
|
(C++17)
|
||||
| Sequence | ||||
|
(C++11)
|
||||
|
(C++26)
|
||||
|
(C++26)
|
||||
|
(C++11)
|
||||
| Associative | ||||
| Unordered associative | ||||
|
(C++11)
|
||||
|
(C++11)
|
||||
|
(C++11)
|
||||
|
(C++11)
|
||||
| Adaptors | ||||
|
(C++23)
|
||||
|
(C++23)
|
||||
|
(C++23)
|
||||
|
(C++23)
|
||||
| Views | ||||
|
(C++20)
|
||||
|
(C++23)
|
||||
| Tables | ||||
| Iterator invalidation | ||||
| Member function table | ||||
| Non-member function table |
std::queue
| Member functions | ||||
| Element access | ||||
|
queue::front
|
||||
| Capacity | ||||
| Modifiers | ||||
|
(C++23)
|
||||
|
(C++11)
|
||||
|
(C++11)
|
||||
| Non-member functions | ||||
|
(C++11)
|
||||
| Helper classes | ||||
|
(C++11)
|
||||
|
(C++23)
|
||||
| Deduction guides (C++17) |
|
reference front
(
)
;
|
||
|
const_reference front
(
)
const
;
|
||
Returns reference to the first element in the queue. This element will be the first element to be removed on a call to pop() . Effectively calls c. front ( ) .
Contents |
Parameters
(none)
Return value
Reference to the first element.
Complexity
Constant.
See also
|
access the last element
(public member function) |
|
|
removes the first element
(public member function) |