Kotlin Coroutines

KCO-NOTES.txt

API (class) Key words : Job, Scope, Context, Dispatchers

- Suspending functions do not block the caller thread.

- Job (is a Element is a Context)
  - A background job
  - Can be cancled else a CancellationException is rised
  - Had a lifecycle
  - A Job had childs and can be a parent
  - Cancelling a parent Job  leads to cancel it's childs
  - If child job fail the whole jobs (parent and childs) are canelled 
  - An instance of a Job could be get by a launch coroutine builder or by a Job() factory function
  - A Job doesn't return a result else there's the Deffered version of Job that do return a result

-Scope (has a context)
  - GlobalScope.launch create a top-level coroutine // like creating a main thread
  - Coroutine has a Context and Job has a Context
  - `coroutineScope` function 
    - Allow parallel decomposition of work (block)
    - If a coroutine children scope fail the other blocks got canceled.
    
- Context