An introduction of std::align with the arena allocator as motivational example

Little C++ Standard Library Utility: std::align

by Lesley Lai

From the article:

Recently, I learned about std::align, which is one of the lesser-known functions in the C++ standard library because of its limited use cases. Since it is hard to describe without a specific use case, I will use a simple implementation of an arena allocator as a motivational example.