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https://github.com/scala/async https://github.com/scala/async is the syntactic sugar to write sequential nonblocking code in Scala (no callbacks). Though functi

• pron 13y ago
  [cloned comment] Essentially, Quasar provides async and await for all JVM languages. async is called `Fiber.start()`, and await is called `Fiber.park`. Other than working for all JVM languages, Quasar fibers are more general in that they can spawn many functions (they have a stack), while async is limited to a single expression block. Because of this, we can hide the "await" deep inside the JDBC call stack. Under the hood, they are similar: both instrument your code. Only async does this at the language level (it's a Scala macro), while fibers do it at the bytecode level.