Brief look at the state of concurrency primitives available in the C++ standard library.

Natural transformations allow us to move between functors inside a category.

What does the Yoneda lemma look like in Haskell?

Functors map objects and morphisms between two categories.

Tokio is an asynchrous runtime for Rust. Code doesn't run on its own, it must be run by a runtime - Tokio is one such runtime.