What's the difference between deque and list STL containers?
Oct 11, 2018 · Deque: Any insertion or deletion of elements other than at the beginning or end invalidates all pointers, references, and iterators that refer to elements of the deque. List: …
Deque - how come "reserve" doesn't exist? - Stack Overflow
Jun 20, 2024 · The standard STL vector container has a "reserve" function to reserve uninitialized memory that can be used later to prevent reallocations. How come that the other deque …
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 …
C++ deque: when iterators are invalidated - Stack Overflow
Apr 29, 2012 · An erase operation that erases the last element of a deque invalidates only the past-the-end iterator and all iterators and references to the erased elements. Every iterator …
Python type hinting a deque filled with myclass objects
Aug 21, 2018 · 15 using Python 3.6 or newer, I want to type hint a function myfunc that returns an object of MyClass. How can I hint, that myqueue is a deque filled with MyClass objects?
java - Why should I use Deque over Stack? - Stack Overflow
Deque<Integer> stack = new ArrayDeque<>(); I definitely do not want synchronized behavior here as I will be using this datastructure local to a method . Apart from this why should I prefer …
deque in python pandas - Stack Overflow
Sep 4, 2016 · Below I've replicated the simple insert function from deque in pandas dataframes, numpy arrays, and also in hdf5 using the h5py module. The timeit function reveals …
python - How to slice a deque? - Stack Overflow
Apr 4, 2012 · Indexing into a deque requires following a linked list from the beginning each time, so the islice() approach, skipping items to get to the start of the slice, will give the best …
how does random access of an element in deque gives constant …
Sep 9, 2018 · A deque is typically implemented as a two-layer structure, the top level is an array of pointers to fixed-sized chunks. Using knowledge of that size it is constant complexity to …
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 …