What is structured concurrency?
Structured concurrency is a programming paradigm that aims to make concurrent programming as straightforward, safe, and simple to understand as writing sequential code. It takes its name as an analogy stemming from structured programming.
The basic assumption of structured concurrency is that it should bring the same simplification to concurrency that structured programming brought to program sequencing, by removing goto-based branching.
Every asynchronous task is now part of a hierarchy and has a priority. The hierarchy allows the runtime to cancel all the child tasks of a parent task when the parent is canceled. It also simplifies waiting for all children to finish before the parent is allowed to complete. Also, the compiler checks whether code can or should be run asynchronously. Although not perfect, the compile-time check catches the most common programming errors. It will, for instance, detect some race conditions and potentially unsafe code...
