Sometimes, we all need a way to iterate over a container in the opposite direction. There are several ways to reverse-iterate a container, and in this article, we’ll explore them.

Reverse Iterations

by Coral Kashri

From the article:

Probably the simplest way, taken from C is to iterate using an index location:

for (int64_t index = ssize(container); index >= 0; --index) {

    // do something with `container[index]`

}

This way is highly not recommended as it might lead to infinite loops if done incorrectly (for example by using uint64_t or size_t for the index type), and you can find more issues with this way in some previous articles about iterators in this blog.