std::queue<T,Container>::front
From cppreference.com
C++
Containers library
| Sequence | ||||
|
(C++11)
|
||||
|
(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()
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) |