What are the differences between std::deque and std::list in C++?

What are the differences between std::deque and std::list in C++?

std::deque is a double-ended queue that allows fast insertions and deletions at both ends, while std::list is a doubly linked list that allows fast insertions and deletions anywhere in the list.

When should I use std::deque over std::list?

Use std::deque when you need fast access to both ends and random access to elements. Use std::list when you need frequent insertions and deletions in the middle.

Are there any performance considerations I should be aware of?

Yes, std::deque generally has better cache performance due to its contiguous memory allocation for elements, while std::list has overhead from pointers.

Can you give me an example of when to use each?

Sure! Use std::deque for a task queue where you add and remove tasks from both ends. Use std::list for a playlist where you frequently add or remove songs.