C++ Deque emplace()

Deque empty() function

C++ Deque empty() C++ checks whether the container is empty or not. If the container is empty, it returns 1 otherwise 0. Syntax void empty() Parameter It does not contain any parameter. Return value It does not return any value. Example 1 Let's see a simple example when deque is not empty. #include <iostream> #include<deque> using...

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C++ Deque

Deque stands for double ended queue. It generalizes the queue data structure i.e insertion and deletion can be performed from both the ends either front or back. Syntax for creating a deque object: deque<object_type> deque_name; Functions Method Description assign() It assigns new content and replacing the old one. emplace() It adds a new element...

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Deque crend() function

C++ Deque crend() Function In the C++ programming language, the deque::crend() function is present in the deque container that is part of the Standard Template Library (STL). It is commonly used to return an iterator pointing to the element preceding the first element of the deque...

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Deque operator[]() function

C++ Deque operator[]() C++ Deque operator[] function is used to access the element at specified position pos. If position pos is greater than the size of container then it returns a value 0. Difference between operator[]() & at() When position pos is greater than the size of the container...

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Deque push_back() function

C++ Deque push_back() C++ adds a new element at the end of the deque container and the size of the container is increased by one. Syntax void push_back(value_type val); Parameter val: New value to be inserted at the end of the deque container. Return value It does not return any value. Example...

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Deque cend() function

C++ Deque cend() Function The C++ Standard Template Library (STL) includes many containers, iterators, and algorithms to make programming easier. One of the most flexible containers is the deque (double-ended queue) because we can both insert and remove elements from both ends with reasonable complexity. The...

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Deque pop_front() function

C++ Deque pop_front() C++ removes the first element from the deque and the size of the container is reduced by one. Syntax void pop_front(); Parameter It does not contain any parameter. Return value It does not return any value. Example 1 Let's see a simple example #include <iostream> #include<deque> using namespace std; int main() { ...

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Deque rend() function

C++ Deque rend() Function In the C++ programming language, the deque is a sequence container, which is a part of the Standard Template Library (STL). The deque enables us to insert or delete elements from both the front and back. The rend() function is the member...

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Deque push_front() function

C++ Deque push_front() Function In the C++ programming language, the deque (double-ended queue) is one of the most important features across various Standard Template Library (STL) containers. It allows the programmer to work with elements at either end of the container. The deque has the benefit...

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Deque shrink_to_fit() function

C++ Deque shrink_to_fit() C++ reduces the memory usage to fit the size of the container. This function does not modify the content of a deque. Syntax void shrink_to_fit(); Parameter It does not contain any parameter. Return value It does not return any value. Example 1 Let's see a simple example #include <iostream> #include<deque> using namespace std; int...

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