Should I use vector or list?

In general, use vector when you don’t care what type of sequential container that you’re using, but if you’re doing many insertions or erasures to and from anywhere in the container other than the end, you’re going to want to use list. Or if you need random access, then you’re going to want vector, not list.

Which is faster list or vector?

whatever the data size is, push_back to a vector will always be faster than to a list. this is logical because vector allocates more memory than necessary and so does not need to allocate memory for each element.

What is the difference between std :: list and std :: vector?

In vector, each element only requires the space for itself only. In list, each element requires extra space for the node which holds the element, including pointers to the next and previous elements in the list. List is not thread safe. Deletion at the end of the vector needs constant time but for the rest it is O(n).

What is the difference between std::list and std :: vector?

Is std :: vector a list?

In this article, when I talk about a list it is the std::list implementation and vector refers to the std::vector implementation. It is generally said that a list should be used when random insert and remove will be performed (performed in O(1) versus O(n) for a vector).

What is the difference between std :: string and std :: vector?

std::string offers a very different and much expanded interface compared to std::vector<> . While the latter is just a boring old sequence of elements, the former is actually designed to represent a string and therefore offers an assortment of string-related convenience functions.

Is std::list contiguous?

All the data in a vector is contiguous where the std::list allocates separately memory for each element. Complexity analysis does not take the memory hierarchy into level.

Is std::list bad?

So what’s wrong with std::list? Mostly one thing: each node is allocated separately – nodes are not contiguous in memory. And when the size of a node is smaller than a cache line, everything else in the cache line is useless, it’s cache pollution. So in short, lots of cache misses and very bad use of the cache itself.

Is std::list a linked list?

std::list is a container that supports constant time insertion and removal of elements from anywhere in the container. It is usually implemented as a doubly-linked list.