Do we have an Await

[cees van Kemenade]

When using C# Async methods  you also would like to have the Clojure-clr equivalent of the await.

Does anyone know whether this exists in clojure-clr?

I've made an await function myself, but possbily a better and more idiomatic solution is available.

I currently use:

(def WaitInterval (Convert/ChangeType 30 System.Int32))

(def RunStatus #{System.Threading.Tasks.TaskStatus/Running

                 System.Threading.Tasks.TaskStatus/WaitingForActivation})

(defn C#await

  [task]

  (while (RunStatus  (.Status task))

      (System.Threading.Thread/Sleep ^System.Int64 WaitInterval))

  (when (not= (.Status task) System.Threading.Tasks.TaskStatus/RanToCompletion)

    (println "Request has unexpected status: " (.Status task)))

  (.Result task))

[ad...@tothadam.net]

This implementation blocks the thread it is running on, you can probably just use .Result on the task to achieve the same. It will also return faster and spin less.

Ideally, you could use clojure idioms with core.async instead of using await, however it is not fully implemented yet for ClojureCLR: https://github.com/dmiller/clr.core.async

Not sure if there is a way to await in ClojureCLR.