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TODO.md

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End of last session

Next

- Go look at test with TODO. Copy in a scenario that is closer to the points below
- label edges, including edge to nothing
	- return values from Function rendered differently
	-

Experiments:

- try VS Git UI
- safe guarding
	- visualize the Verify API
	- create subproject for interfaces
	- write a test for what level the Verify objects can take
* Open a external Mindmup board

Ideas

  • kata w/ pipelines

    • game of life
    • tennis

  • tuples as (a, b, c)

  • code converter (Roslyn or Mono.Cecil)

  • Propagate Exceptions through a pipeline

  • GetInputs<>.AndOutputs<>() when finding an end-point that's not of a type we expect could have said "looking for an InputPipe<> but found an unconnected pipe of type InputPipe<>" (would have been async)

  • Async

    • test sometimes fails, missing a value (flaky)
    • TEST: pipeline that writes to side effect
    • Make async, see it break (order has changed)
    • Refactor to use comp. instead of inheritance. Maybe a sending mechanism.
    • Tests for JoinedWith, ConcatWith, ProcessForEach, ApplyTo

  • extract base class for Joined/Applied/Concatted pipes

  • var pipeline = result.GetInputsAndOutputs();

    • move to own project

  • Repeat Arlo's exercise

  • sequencing for implicit dependencies through state

     	var a = A();
 	var b = B(a); 
 	var c = C(a); // is it important that C comes *after* B?
 	var d = D(b, c);

  • Learn about Apache Beam

  • Join/Apply when one side never provides an input - does the system stall?

  • multiple input pipe convenience functions

  • Convenience functions for Tuples on Process & InputPipes

  • blog the PB&J example in code vs. pipelines to show differences and advantages

    • these are equivalent executable programs

  • Properties

  • Tuple { ... }

  • progress reporting hooks

  • add Task SendAsync() that executes the entire pipeline asynchronously (on both sync and async pipelines)

  • C# tuple without Join():

   (peanutButterPipe, jellyPipe).ProcessFunction(CreateSandwich)

  • refactoring: split "pipeline" from "graph"

  • refactoring: implement pipelines as pipelines

  • void-returning last method

  • nullable

Safeguarding / automation

  • ensure imported .svg really exist at that name
  • verify .svg are up to date in CI
  • generate NuGet packages in CI
  • Run same tests against both Sync and Async APIs
  • Create CI for PipelinesExercise (use GitHub Actions to learn about them)
  • ensure the library code invoked in async pipelines is thread-safe
    • tried HSR Parallel Checker (a free VS Extension) that promises it detects thread-unsafe code, however did not detect any problems on the solution (before the thread-safe fix was applied)
    • PostSharp Threading - costs money, need to investigate if it's useful
  • ensure/help the users write thread-safe code when using async pipelines
  • dependabot config file
  • automate deployment in CI pipeline

Retro

  • start with
    • questions/things I didn't understand
    • what happened today