c++ - What really is a deque in STL? - Stack Overflow
A deque, short for "double-ended queue," is a versatile data structure in the C++ Standard Template Library (STL). It allows for efficient insertion and deletion of elements at both the …
What's the difference between deque and list STL containers?
Oct 11, 2018 · A deque is very much like a vector: like vector, it is a sequence that supports random access to elements, constant time insertion and removal of elements at the end of the …
python - queue.Queue vs. collections.deque - Stack Overflow
I need a queue which multiple threads can put stuff into, and multiple threads may read from. Python has at least two queue classes, queue.Queue and collections.deque, with the former …
python - efficient circular buffer? - Stack Overflow
Mar 16, 2016 · I want to create an efficient circular buffer in python (with the goal of taking averages of the integer values in the buffer). Is this an efficient way to use a list to collect …
python - How to slice a deque? - Stack Overflow
Apr 4, 2012 · deque_slice = collections.deque(itertools.islice(my_deque, 10, 20)) Indexing into a deque requires following a linked list from the beginning each time, so the islice() approach, …
How to check deque length in Python - Stack Overflow
May 13, 2021 · Then the reason is that you probably used JavaScript syntax in Python, i.e. you tried to call from collections import deque q = deque() q.append(2) q.length # This is wrong …
python: deque vs list performance comparison - Stack Overflow
May 6, 2014 · In python docs I can see that deque is a special collection highly optimized for poping/adding items from left or right sides. E.g. documentation says: Deques are a …
Why would I prefer using vector to deque - Stack Overflow
Sep 14, 2024 · Since: (I presume) they are both contiguous memory containers; feature wise, deque has almost everything vector has but more, since it is more efficient to insert in the …
deque.popleft() and list.pop(0). Is there performance difference?
Sep 12, 2015 · 72 deque.popleft () is faster than list.pop (0), because the deque has been optimized to do popleft () approximately in O (1), while list.pop (0) takes O (n) (see deque …
How to peek front of deque without popping? - Stack Overflow
Feb 6, 2018 · 2 Assuming your deque is implemented from collections python from collections import deque deque = deque() //syntax Deque too can be interpreted as a list in terms of …