Improve Concept Exercise: The Farm (errors)

[ErikSchierboom]

This is part of our September Spring to get the Go Track in shape. Please read the Overview issue for more details. This exercise is claimed by @jmrunkle.

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• the-farm: add concept(s) / prerequisites #1636
• the-farm: introduce interfaces concept #1638
• the-farm: add tasks to introduction #1639

[sachinmk27]

I'd like to work on this

Edit: @junedev Sorry, unassigning myself. Still need to learn about Interfaces properly.

[junedev]

@ErikSchierboom Have you seen there is also the exercise Deep Thought which teaches errors? The "Deep Thought" exemplar looks more like what we are aiming for here to cover basic errors (we would just need to add a part for the customer error). Can you remember why you preferred "The Farm" for the September sprint list and do you know how the two exercises are related?

[jmrunkle]

I can take this one since it is blocking some of the work I need in another exercise.

[ErikSchierboom]

@junedev I have no preference for The Farm over Deep Thought, it's just that The Farm was already there. I'd be fine with replacing it with Deep Thought. Whatever is best.

[junedev]

@jmrunkle Maybe you can have a look at "deep thought" and judge yourself what you think fits best for the basic errors concept. The respective other exercise can be set to "wip" and then used for more advanced concepts like the error wrapping later.

Another comment for you as I don't know whether this came across from the description. The general idea here is to use a custom error type as an example of something implementing an interface. To make the student write an interface you can additionally make up some requirement for a second method besides Error that the custom error should have.

If you dont like that idea you can also just cover errors and then we need a separate exercise for interfaces.

[jmrunkle]

@jmrunkle Maybe you can have a look at "deep thought" and judge yourself what you think fits best for the basic errors concept.

Will do.

[jmrunkle]

So... deep-thought looks really incomplete (no tests, partial instructions, lots of TODOs that need doing, etc). It seems we missing trackers for that on the September sprint overview (and sub-issues for the actual problems). @junedev @ErikSchierboom?