Top "Deque" questions

How can I get the first value of a deque without deleting it?

I use Python 3.6.1 and I use deque() from collections quite often due to its convenience. This time, I need to …

python deque

How can I pop() lots of elements from a deque?

I have a deque object what holds a large amount of data. I want to extract, say, 4096 elements from the …

python deque

How to release memory from std::deque?

I'm using a std::deque to store a fairly large number of objects. If I remove a bunch of those …

c++ stl deque

How Do I define a Double Brackets/Double Iterator Operator, Similar to Vector of Vectors'?

I'm porting code that uses a very large array of floats, which may trigger malloc failures from c to c++. …

c++ vector iterator operator-overloading deque

Python Deque appendleft with list

I am currently creating my deque object using the following, self.CommandList = deque((['S', False, 60],['c'],['g16'],['i50'],[…

python list deque

C++ std::deque implementation: why not use circular buffer?

I did some search on the implementation of deque. According to this post, deque uses vector of vectors. I know …

c++ stl deque circular-buffer

C++ deque: when iterators are invalidated

Please correct me if I am wrong. Thank you! insert and erase will relocate elements, but elements before the position …

c++ stl iterator deque

deque remove item by index

Is there any way to remove an item in deque by index? dq = deque(['a','b','c']) dq.removeByIndex(1) #output …

python deque

Add to a deque being iterated in Python?

I have a deque in Python that I'm iterating over. Sometimes the deque changes while I'm interating which produces a …

python deque

How to "convert" a dequed object to string in Python?

I am trying to output a rotated version of a string. I have taken a string, z="string", and created …

python collections rotation deque